Tag: News

  • Köniz tests power supply with 100 per cent renewable energy

    Köniz tests power supply with 100 per cent renewable energy

    The Bernese energy supplier BKW is testing new solutions for supplying electricity from renewable energies. According to a press release, a three-year pilot project will provide real-time data on electricity demand and consumption in the Mittelhäusern district of the municipality of Köniz.

    The choice of test area was the result of a feasibility study commissioned by the municipality of Köniz. The test focussed on supplying electricity to the 950 residents of the municipality. In the contiguous supply area, the electricity supply is to be realised using renewable energies. After the test phase, all energy customers will have the opportunity to obtain 100 per cent renewable energy, which is more environmentally friendly and cheaper than before, according to the press release.

    Mittelhäusern could become the first Swiss village to cover its entire energy requirements, i.e. electricity, heat, mobility and processes, from renewable sources, according to BKW. However, a separate follow-up project is planned for the areas of heat and mobility.

    The central aim of the study is to provide BKW Power Grid with data and experience with real-time sensor and actuator technology in a practical experiment. The aim is to ensure a stable and efficient power supply at all times. As a result, the understanding of an intelligent overall electrical system (smart grid) should be improved.

  • Zurich agglomeration needs new buildings

    Zurich agglomeration needs new buildings

    The Zurich agglomeration is the only one in Switzerland where the population is growing faster than the housing stock. This was revealed by a study conducted by the Zurich research institute Sotomo on behalf of Fürschi Züri.

    The housing stock in the Lausanne conurbation has grown by 10.0 per cent since 2016, in Geneva by 8.9 per cent and even in Winterthur by 8.5 per cent. In Zurich, the figure was only 7.8 per cent. Within the Zurich agglomeration, the labour market region of Kloten saw above-average growth of 10.9 percent, Uster-Dübendorf 8.6 percent and Limmattal 8.4 percent.

    The agglomeration is lagging behind, particularly in terms of new builds, with growth of 3.8 per cent. Only the Basel agglomeration is lower at 2.7 per cent. Lausanne has 5.5 per cent more new builds and Winterthur 5.3 per cent.

    Zurich, on the other hand, is ahead with an increase of 4.5 per cent in replacement new builds. However, Zurich is also the agglomeration in which replacement new builds create the lowest number of new flats with a factor of 2.8 and the smallest new living space with a factor of 3.4. Even Winterthur achieves a factor of 3.4 for the number of flats and 3.7 for floor space. Lausanne leads the field with a factor of 6.5 for the number of apartments and 5.9 for floor space, followed by Geneva with 6.1 for the number of apartments and 5.6 for floor space.

    There are considerable differences within the Zurich agglomeration. The labour market region of Kloten has a factor of 4.3 for the number of flats. The fewest new flats are being created in Küsnacht-Meilen with a factor of 2.2. In the city of Zurich, the factor for the number of flats is 2.3.

    Young people and families are the main direct beneficiaries of new builds. The majority of residents of new builds come from the municipality (Zurich agglomeration 41 per cent, Winterthur 50 per cent) or from the agglomeration (Zurich 39 per cent, Winterthur 11 per cent). Newcomers from abroad mainly move into existing flats; in the agglomeration, they make up 23 per cent of all newcomers to existing flats.

    Completely renovated flats are generally more expensive than new builds. Newly occupied existing flats in sought-after locations are just as expensive as new builds, and even more expensive in Geneva. New builds do not drive up the prices of neighbouring existing flats either.

    The Zurich conurbation is dependent on new construction, concludes study author Michael Hermann. “New buildings are the key to ensuring that Zurich remains an attractive place to live for everyone,” he is quoted as saying in a press release from Fürschi Züri.

    “Blocking renovations and new builds is counterproductive,” adds Raphaël Tschanz, Director of the Zurich Chamber of Commerce(ZHK). “Without new builds, young adults and families will be displaced.”

    Fürschi Züri is an initiative of the ZHK and like-minded organisations and individuals.

  • Helicopter deployment for climate-friendly energy supply

    Helicopter deployment for climate-friendly energy supply

    The Clinique Valmont in Montreux has been equipped with a climate-friendly heat supply system by BRUGG Pipes. It consists of a Siemens air heat pump, which is connected to the clinic via a district heating pipe, BRUGG Pipes explains in a press release. The heating capacity of the system is estimated at 321 kilowatts. With the new sustainable heat supply, the clinic, which is part of the Swiss Medical Network, will be able to avoid around 263 tonnes of CO2 emissions every year.

    BRUGG Pipes took an unusual approach to the delivery of the district heating pipe. “As space was limited and an incline had to be negotiated between the unloading and installation sites, we used a helicopter to transport the four sections, each weighing around 700 kilograms,” said René Hilty, Project Manager Specialist Construction Planning at the company, which is part of BRUUG GROUP AG in Brugg, in the press release. The Siemens heat pump even weighs 2.8 tonnes. It will be transported by a Super Puma helicopter on 30 September.

  • Circularity as the key to a climate-friendly building future

    Circularity as the key to a climate-friendly building future

    CircularHub, knowledge and exchange platform for circular construction, invites you to the MasterClass Circularity in the construction and real estate sector on 2 October 2025, as detailed in an announcement. The aim is to support specialists and managers in actively transforming the resource-intensive construction sector and contribute to achieving Switzerland’s net-zero targets.

    During the event, the role of circularity in sustainability and the strengths of circular design strategies and business models, best practice examples and existing Swiss approaches will be discussed. Participants will receive individual preparation by means of a briefing document and an optional follow-up telephone call with CircularHub specialists. “Solutions for a circular turnaround have long been on the table. Now it’s a matter of putting the knowledge, skills and will into practice – and that’s exactly what the MasterClass is for,” says Marloes Fischer, CEO of CircularHub and keynote speaker at the event. In addition to the technical content, the MasterClass enables active networking between specialists and managers, who can exchange ideas with experts and decision-makers and gain inspiration.

    According to CircularHub, the Swiss construction and property industry, which has high CO2 emissions and high resource consumption, is facing profound changes. The platform is therefore endeavouring to support industry players with innovative solutions and transform the construction industry towards a circular economy.

  • Nidwalden drives asking rents

    Nidwalden drives asking rents

    The monthly rental index compiled by the digital property marketplace Homegate in collaboration with Zürcher Kantonalbank closed at 131.2 points at the end of August. Compared to the previous month, the index rose by 0.2 per cent, Homegate reported in a press release. Compared to the previous year, the property marketplace’s experts have registered a 2.6 per cent increase in asking rents across Switzerland.

    The month-on-month increase across Switzerland was mainly driven by the canton of Nidwalden. Here, asking rents rose by 1.5 per cent. In a year-on-year comparison, they were around 10 per cent higher. All other cantons showed only slight movements in both directions in a monthly comparison. In a year-on-year comparison, the canton of Schwyz stands out with an increase of 8.4 per cent. Property experts only observed falling asking rents in the canton of Graubünden over the same period.

    Asking rents in the eight Swiss cities included in the index were all higher in August than in the same month last year. At 1.8 per cent, Lugano recorded the largest monthly increase. Asking rents in the city of Lucerne were 2.1 per cent lower in August than in the previous month. In a year-on-year comparison, however, asking rents in Lucerne rose the most among the eight cities surveyed.

    Homegate is a division of SMG Swiss Marketplace Group AG. This combines the digital marketplaces of TX Group, Ringier and Mobiliar.

  • Renovation of the Pérolles Bridge near Fribourg underway

    Renovation of the Pérolles Bridge near Fribourg underway

    Walo Bertschinger AG is involved in the ongoing renovation of the Pérolles Bridge between Fribourg and Marly FR. The 550 metre long and up to 70 metre high road bridge over the Saane is being repaired following damage to the road surface. Walo Bertschinger’s team is currently taking on a range of the work involved, as the fourth-generation construction company from Dietikon explains in a post on Facebook.

    Specifically, Walo is replacing the carriageway joints and renewing around 10,000 square metres of asphalt. The Walo team is also repairing damaged concrete and providing the bridge with modern waterproofing. The Pérolles Bridge will remain open to cars, buses, bicycles and pedestrians throughout the construction work.

  • Schadenmühle Ost project invites public participation

    Schadenmühle Ost project invites public participation

    A consortium of three private landowners and the city of Baden is planning to transform the Schadenmühle Ost site into a place for sustainable, dense and mixed-use living. The current use of the site, which consists of individual buildings, car parks and unused areas, does not meet today’s requirements or the current building and usage regulations, the consortium explains in a press release. The Schadenmühle Ost transformation project aims to create an urban area with around 100 flats, flexible commercial space, green areas and an underground car park.

    On 16 September, the consortium presented the project and its integration into the city’s urban development plans for Baden at an information event. This marked the start of a new phase for the flagship project, according to the press release: from 22 September to 21 October, interested parties can now submit comments and suggestions on or objections to the Schadenmühle Ost design plan. The consortium is providing detailed information on the project on an information portal.

    “We are rooted in Baden and it is important to us to make the Schadenmühle Ost site attractive for the city,” Beni Schmocker, one of the four landowners, is quoted as saying in the press release. “Involving the local population is a matter of course for the landowners.”

  • New ways to combat stock shortages

    New ways to combat stock shortages

    With a vacancy rate of around one percent for apartments, free space in the Swiss real estate market is extremely scarce. Away from the housing market, however, other problems arise with storage space. Storage spaces of less than 100 square meters in particular are often vacant because the effort involved in viewings, fixed price negotiations and physical contracts is disproportionate to the return. Neither owners nor administrators find the time-consuming letting process worthwhile, as fees and monthly rents are low and resources would be better spent on high-margin properties.

    Digital innovation for the management of small storage spaces
    Since the beginning of 2025, the Swiss start-up storabble has been using fully automated processes to solve this problem. The company offers outsourcing solutions for renting out vacant storage space and takes care of all administrative tasks. This includes tenant search, identification, verification, contract processing, key management and debt collection. Even risks such as debt collection claims or damage are outsourced, reducing the burden on owners and administrators.

    Automated processes for greater efficiency
    The business model is based on specially developed software and a digital marketplace where around 12,000 people across Switzerland can find potential rental properties every month. Full automation reduces costs and effort and also makes it possible to rent out low-value space profitably. Owners of well-known portfolios are already processing vacancies with the company.

    Economic relevance and outlook
    The rental income missed due to vacant warehouse space corresponds to around 0.02 percent of the total portfolio value on the Swiss real estate market each year. In view of a market value of CHF 6 trillion, this results in economically relevant potential for digitally efficient solutions. The outsourcing model opens up new economic benefits for very small spaces and is an example of digitalization and increased efficiency in the real estate sector. At the same time, the smart management creates relief in the sector and can serve as a blueprint for other special properties.

  • Zurich Metropolitan Area Cooperation Program 2025-2028

    Zurich Metropolitan Area Cooperation Program 2025-2028

    The cooperation programs of the Zurich Metropolitan Area Association serve the targeted development of projects with regional added value. Three programs have been successfully implemented since the association was founded in 2009. The focus is on growth, digitalization and demographic change. The current fourth call for proposals runs under the leitmotifs “Positive climate for innovation” and “Intelligent use of scarce resources” and thus picks up on the new Vision 2040/50 and the 2027 utilization strategy.

    The program is open to projects that focus on one of these topics or projects that combine both aspects. The selective, two-stage procedure ensures that the concepts submitted are practical, scalable and can be implemented in partnership with the member cantons, cities and municipalities. The submission threshold is deliberately kept low. In stage 1, a brief outline of the idea and organization is sufficient; in stage 2, the project is developed further and in more detail.

    Advantages and special features
    The program creates an innovative forum for supra-regional exchange between science, politics, business and society. The professional networking promotes sustainable solutions and strengthens the competitiveness of the metropolitan area as a leading location for research and development. Cantons, cities and municipalities benefit even if individual projects do not affect everyone equally. Diversity and innovative approaches remain the benchmark for the structural and functional area.

    Practical implementation and strategic impact
    With each program, the Zurich Metropolitan Conference provides new impetus for change in work, mobility and the use of resources. The current focus supports projects that contribute to greater innovative strength, digital transformation and sustainable development. Regional and cross-sector solutions are intended to further strengthen the Zurich metropolitan area as an attractive place to live and do business.

  • Tried and tested building materials reinterpreted

    Tried and tested building materials reinterpreted

    Sustainable building materials such as clay, wood and straw have a positive climate footprint. As they grow, they absorb CO₂ and store it in the long term. Around fifty million tons of excavated material containing clay are produced in Switzerland every year, a potential that is only used to a limited extent as most of it is landfilled. If this soil could be used as a building material, the material cycle could be closed directly. Saving resources, less transportation and lower disposal costs are the result. Wood is equally sustainable. Swiss forests provide a fast-growing, robust building material that now accounts for up to seventeen percent of load-bearing structures in new buildings, particularly in urban housing construction and additions.

    Prefabrication and hybrid construction
    The modern rediscovery of traditional materials is based on high-tech production methods. Prefabricated modules, the targeted use of robots and the addition of natural additives allow faster and more efficient processes. Nowadays, clay can be poured into formwork as liquid clay like concrete or used as rammed earth with reinforcements for multi-storey buildings. Combining clay and wood in hybrid wall or façade elements creates sustainable and climate-friendly structures. Researchers are working on optimizing materials to make clay and straw even more efficient. For example, through natural additives such as trass lime or innovative reinforcements.

    Challenges and development prospects
    The market penetration of clay and straw throughout Switzerland is still low, mainly due to a lack of industrial development, insufficient standardization and high start-up costs. Wood, on the other hand, is already widely accepted, although the forestry industry is struggling with climate change. Softwoods are coming under pressure, hardwoods are gaining in importance, but need new processing technologies. At the same time, environmental standards must be ensured and biodiversity preserved in the forests so that CO₂ storage is maintained. Research projects are investigating how wood can be made more resistant to environmental influences using biological substances such as shellac or plant-based tanning agents.

    Circular economy, health and acceptance
    Innovative building materials offer not only ecological but also health benefits. Natural materials improve the indoor climate, reduce allergy risks and avoid pollutants. Production is often low-energy and the components can be recycled at the end of their life. Web platforms such as the “Atlas of Regenerative Materials” network companies and projects in order to increase acceptance of and confidence in bio-based buildings.

    Innovation as a driver
    The combination of traditional expertise, modern research and digital prefabrication creates new opportunities for sustainable construction. Only by combining natural materials, recyclable structures and ecological responsibility can the construction industry make a positive contribution to climate protection. The opportunities for this have never been better and the building material of the future lies in the soil, in the forest and in the fields of Switzerland.

  • How the SIA is setting new standards in procurement

    How the SIA is setting new standards in procurement

    Project alliances are gaining in importance and are not only being piloted by major clients such as SBB and FEDRO, but are also on the agenda throughout the industry. The new Federal Act on Public Procurement (BöB) provides more scope for quality assessment in tenders. The purely price-driven competition is slowly fading into the background. Nevertheless, the administrative burden remains high and dumping offers are still an issue that is not yet optimally controlled.

    Market observation and contract award monitoring
    Another milestone is the expansion of market observation and contract award monitoring through cooperation with Bauenschweiz. The SIA observatories for competitions and tenders collect both quantitative and qualitative data. At municipal level in particular, the specially developed online tool “Planning procurement” facilitates the implementation of the new requirements and provides planning security.

    Potential for the entire sector
    Pilot projects and the pro-allianz.ch association highlight the industry’s desire for partnership-based and project-centred forms of organization. The SIA actively promotes the exchange of knowledge and supports new alliances with the aim of placing collaborative work and project success above traditional competitive models.

    Competition regulations updated
    The SIA 142 and SIA 143 regulations for competitions and study commissions have been extensively revised and introduced in August. Aspects such as copyright, remuneration procedures, fairness and transparency are now given greater weight. The revision was developed together with public clients and increases acceptance on both sides.

    Focus on sustainability criteria and remuneration
    In addition to ecological aspects, items such as economic, macroeconomic, social and cultural sustainability are given greater weight in the procurement processes. The content, definition and implementation of sustainability is being continuously developed in working groups and with event formats such as “post-fossil competitions”. Another priority topic is the appropriate remuneration of planning services. Digital platforms and new fee regulations are intended to strengthen fairness and transparency so that planning offices are remunerated in line with the market and in a transparent manner in future.

  • Federal Council simplifies construction procedures

    Federal Council simplifies construction procedures

    To date, many construction projects and urban developments have been delayed due to the rigid direct application of the Federal Inventory of Sites worthy of Protection (ISOS). In Zurich in particular, thousands of apartments are blocked, as the example of Brunaupark shows. The Federal Council wants to simplify and speed up the processing and approval of residential projects with a new regulation. In future, the ISOS requirements will only apply directly in cases where the townscape is actually affected. This will significantly reduce the number of complex procedures and numerous projects can be realized more quickly.

    In future, cantons and municipalities will be given more leeway and clear boundaries as to when direct application of ISOS is really necessary. The conservation objectives of the inventory will be formulated more openly, which will enable inward settlement development while still protecting building culture.

    Solar installations are easier to approve
    The new measures also make it easier to install solar installations on new buildings. In future, an ISOS review will only be required for existing buildings. The federal government is thus taking account of the requirements of the energy transition and strengthening planning and legal certainty for future-oriented construction projects.

    Consensus at the round table
    The reform was developed at a broad-based round table with representatives from the federal government, cantons, cities, municipalities, business and civil society. The regulatory adjustments are to be made by fall 2026. At the same time, the processes for applying the ISOS inventory will be improved so that conflicts can be identified and resolved at an early stage.

    Prominent critics and supporters from politics and heritage protection welcome the new regulations. It is a sensible compromise between protection and development. Direct application remains possible for important monuments, but will no longer prevent important innovation projects in future.

    New momentum for residential construction
    The new rules give cantons and municipalities the necessary flexibility to combine resource protection and building culture. Residential construction projects such as Brunaupark could be approved and realized much more quickly in future. The Federal Office of Culture, Department of the Environment and Department of Economic Affairs have been tasked with implementing the new principles in order to address the increased demand for housing and the challenges of the energy transition in a holistic manner.

  • Adding storeys and extensions made easy

    Adding storeys and extensions made easy

    The further development of existing buildings offers clear advantages. It saves resources, reduces CO2 emissions and reduces the volume of construction waste. In contrast to demolition, the appearance of the neighborhood is preserved and new rentals are often lower, which ensures affordable living space. The local building culture also benefits, as established structures and identity-forming elements are preserved, which strengthens the sense of community.

    High hurdles hamper conversions
    Outdated regulations, complex procedures and a lack of legal certainty are currently hampering numerous extension projects. Older buildings in particular do not comply with the latest regulations, so many owners shy away from the effort involved and prefer to build new ones.

    Revision of the law brings simplifications
    The new proposal from the Building Department provides for targeted simplifications. At its heart is the simplification provision, Section 220a E-PBG: it allows owners to deviate from certain regulations, for example with regard to boundary distances, façade height and the number of full storeys. The aim is to better integrate the further developed building into the existing building regulations, create more scope for conversion and at the same time offer legal certainty.

    Densification and better utilization
    It will be easier to create additional residential units, particularly in residential buildings. The regulation encourages properties to exploit their full potential in accordance with the municipal zoning regulations without losing the existing building stock. This is an important step towards more densification and smart land use in urban and rural areas.

    Further simplifications and updates
    The revision also addresses the demands of the Cantonal Council. For example, procedures for solar installations and stair lifts have been simplified. Outdated regulations on fire protection and minimum heights are to be removed. This will make it easier to convert office buildings into apartments and provide impetus for innovative construction projects.

    Opportunity for Zurich
    The planned simplifications for the conversion and extension of existing buildings will enable sustainable urban development, ecologically, socially and culturally. The revision of the law creates clarity and motivates owners to use the potential of existing buildings instead of building new ones.

  • PFAS in construction waste

    PFAS in construction waste

    Around 7.4 million tons of mineral construction waste are produced in Switzerland every year, with demolition, refurbishment and new construction continuing to increase the quantities. It is not only asbestos and PCBs that are problematic, but also PFAS (per- and polyfluorinated alkyl substances). These chemicals are considered carcinogenic and accumulate in the human body.

    A study by the University of Bern found up to seven PFAS substances in 20 samples of demolition material, some in concentrations of up to 5 micrograms per kilogram. Although the quantities are considered low, the research team recommends further investigations. Landfills are usually not sealed, PFAS can be washed out and thus enter the groundwater, where they pollute the food chain and drinking water.

    Measurements and new standards
    The Swiss Building Materials Association Circular Switzerland and the Federal Office for the Environment are working together with cantons and independent laboratories to determine PFAS contamination in gravel works, concrete plants and existing buildings. The investigation is nearing completion. The findings are to be incorporated into a practical guide for dealing with PFAS. The federal government is planning limit values for PFAS in contaminated sites and waste by 2026, which construction companies will have to comply with in future.

    In civil engineering, the Federal Roads Office has recommended avoiding PFAS-containing substances for the time being. Due to the lack of legislation, Astra is not yet able to enforce any bans, but is working on checklists for PFAS-free construction products.

    Health risk and circular economy
    The Federal Office of Public Health is monitoring the PFAS problem in indoor spaces and warns of its persistence. PFAS bind to materials for a long time and become problematic when abraded and inhaled, but have so far been less relevant in the living environment, as the main source remains food. According to the authorities, the risk of exposure from building rubble and landfill sites is greater. This is because rainwater washes PFAS into the groundwater and thus into the food chain. Although leachate is technically purified, the risk of uncontrolled contamination remains.

    The Building Materials Association emphasizes that the recyclability of demolition material is endangered by the new limit values. At the same time, the industry wants to keep the chemicals out of the cycle. Professional removal and disposal are possible, but it is calling for clear and practicable guidelines from the federal government.

    PFAS in Swiss soil
    A recent Swiss study shows that PFAS can now be detected in all topsoils, even in remote forest and mountain areas. Point sources such as fire extinguishing training grounds and electroplating plants increase local pollution. Agricultural soils in particular contain high PFAS levels, often caused by sewage sludge used as fertilizer. The large number of applications makes it difficult to trace the origin.

    Political debate on PFAS
    Following the detection of PFAS in meat from the canton of St. Gallen and the first bans, parliament has also taken up the issue. The authorities and the industry are working together on a mix of measures to protect the population and the environment. Environment Minister Albert Rösti confirms the seriousness of the situation. The government wants to respond with limit values, guidelines and tighter controls.

  • Farewell to imputed rental value

    Farewell to imputed rental value

    The adoption of the bill on the cantonal property tax for second homes marks the end of the imputed rental value. However, the change will take effect in two to three years at the earliest and will fundamentally change the everyday lives of many of those affected. Not only owners of owner-occupied and rented properties will feel the effects, but also households with debts without property ownership.

    Simplifications and exemptions
    With the abolition of the imputed rental value, maintenance costs and debt interest will also no longer be tax-deductible. However, to make it easier to purchase residential property, special rules apply for the first ten years after purchase. Debt interest of up to CHF 10,000 for married couples and CHF 5,000 for single persons is still deductible, but the remaining maximum amount is reduced by ten percent per year.

    Tax declarations will be simpler and the tax burden for many homeowners will fall in the current interest rate environment. Value-preserving and value-enhancing costs should be properly documented, as in future they can only be claimed when property gains tax is paid, i.e. when the property is sold.

    More restrictions on the deduction of debt interest
    Owners of investment properties are particularly affected by the reform. Interest on debt can now only be deducted in proportion to the value of the property in relation to total assets. This increases the tax burden and significantly limits the previous advantages.

    Taxpayers without real estate
    Households without real estate are also affected. Private debt interest, for example for loans or small loans, may no longer be offset against tax in future. This turns previous practice on its head and may lead to higher tax payments.

    Uncertainties and cantonal competence
    The cantons will have the option of levying a special property tax on second homes. This is a particularly sensitive issue for regions with a high level of tourism, as new taxes can affect the attractiveness of the market. It remains to be seen what the specific assessment bases will look like and which cantons will make use of the new options.

    The cantons can continue to allow temporary deductions for energy-efficient renovations and environmental protection measures until 2050. It is not yet known which cantons will offer this.

    Strategies for mortgages and investments
    The reform not only affects the tax rate, but also personal financial strategies. The question of how high mortgages should be set in future and whether amortization makes sense is becoming increasingly important. Anyone who uses capital for amortization ties it up in the property and loses liquidity for other purposes such as retirement provision or new investments. The decision on the optimal financing therefore requires individual consideration.

    Effects on the real estate market
    Whether the reform affects prices depends above all on the situation of new buyers, the majority of whom are highly mortgaged. According to SNB statistics, 40 percent of newly purchased homes are financed at over 74 percent of their value. Older properties in particular continue to lose tax advantages due to the limited deduction options. New condominiums in the canton of Zurich are on average 20 years old, single-family homes even around 50 years old. The fundamental challenges of high prices and scarce funds for acquisition remain unresolved by the reform.

    The abolition of the imputed rental value promotes the price difference between new buildings and older properties. Second homes are likely to become less attractive as a result of the new property tax, but experts do not expect prices for vacation homes to fall, as the supply shortage is too great.

    Prices for Swiss homes could rise by 4% this year and 4% next year, and by as much as 4.5% in the canton of Zurich. Renovating and maintaining the value of old buildings is becoming more important than ever, but not every investment pays off. Homeowners need to keep a keen eye on their long-term strategy: Is refurbishment worthwhile or is a new replacement building imminent?

    Reform as a joint project
    The changes are based on a close link between legislative and constitutional amendments. The abolition of the imputed rental value will only come into force if the referendum on the new property tax on second homes is successful. Parliament discussed the scope and form of the tax intensively for months. In tourist cantons in particular, there is a great deal of skepticism as to whether reduced revenue can be offset by new taxes. The laws come into force together, a reform with many facets.

    Tax and financial effects at a glance
    The mortgage interest rate determines whether owners benefit. If interest rates are low, the tax burden falls for the majority. If interest rates are high, taxes increase because interest on debt can hardly be deducted any more. For the public sector, the reform could result in a loss of revenue of CHF 1.8 billion. From 3 percent mortgage interest, however, additional revenue is possible for the state as a whole. The actual effects remain unclear for the time being due to various uncertainties.

  • Wood takes centre stage: 1500 guests at event in Worb

    Wood takes centre stage: 1500 guests at event in Worb

    OLWO, which claims to be the central production and trading service provider in the Swiss timber industry, welcomed around 1,500 guests to its sawmill in Worb on 12 and 13 September 2025. The company transformed the area with marquee and wrestling ground into a meeting place for families, experts and people interested in wood, according to a press release. Young wrestlers among those interested in wood were also delighted to receive a surprise visit from former wrestling king Christian Stucki.

    The Days of Swiss Wood 2025, during which the event took place, were organised by the umbrella organisation Lignum Holzwirtschaft Schweiz and its affiliated companies from the forestry and wood industry. The aim of the events was to promote Swiss wood and a sustainable construction industry that focusses on regional resources and sustainable value creation.

    OLWO, a fourth-generation family business, has a proprietary sawmill and planing mill and a comprehensive range of wood-based materials for craftsmen, architects and builders. At the company headquarters in Worb, customers are offered solution-orientated sales advice from around 30 wood specialists in addition to regional woods and materials.

  • Zurich invests in large-scale battery storage for greater security of supply

    Zurich invests in large-scale battery storage for greater security of supply

    Zurich City Council has applied to the municipal council for a framework credit of CHF 20 million. According to a press release, the credit is to be used for the expansion of free-standing large-scale battery storage facilities operated by Elektrizitätswerk der Stadt Zürich(ewz).

    The independently operated systems are used to store large amounts of energy, such as that generated by renewable sources like solar or wind energy. In addition to the existing power plants, the large-scale storage facilities can feed energy into the grid at peak times and thus contribute to the stability of the energy system and security of supply. An important contribution can be made here, particularly in view of the requirements of increasing electrification, such as the switch to electric vehicles and heat pumps.

    According to the press release, the city council can approve ewz projects independently within this framework credit and thus significantly shorten decision-making processes. For ewz, this means that even larger projects in highly competitive business areas can be handled swiftly and remain competitive.

  • Mobile research factory optimises concrete construction for Hyperloop test facility

    Mobile research factory optimises concrete construction for Hyperloop test facility

    The EuroTube Foundation celebrated the opening of its innovative research facility for sustainable infrastructure on the grounds of the Innovation Park Zurich(IPZ) on 16 September, the foundation announced in a press release. The Smart Mobile Factory produces concrete components for the DemoTube hyperloop test facility being built at the IPZ. The innovative factory was developed by the EuroTube Foundation in collaboration with the Swiss Federal Institute of Technology in Zurich, Delft University of Technology, Eindhoven University of Technology and the Free University of Bozen-Bolzano.

    The new factory deserves to be called intelligent, as its construction control is linked to a digital twin via sensor data, writes EuroTube. In this way, material flows, processes and CO2 emissions can be continuously optimised during construction. The factory, which is set up in a few standard containers, can also be moved and flexibly set up along infrastructure projects.

    At the IPZ, the Smart Mobile Factory will not only produce components for DemoTube, but will also be available to other researchers and start-ups who want to develop and test their own technologies directly on an active construction site. To this end, the EuroTube Foundation has launched the Real Laboratory for Infrastructure Construction educational programme. “As a research partner of the Innovation Park Zurich, we are proud to support projects, start-ups and companies in the development of new products for the transition to sustainable mobility infrastructures,” said Antoine Juge, Managing Director of the EuroTube Foundation, in the press release.

  • Digital solution makes progress on greenhouse gases visible

    Digital solution makes progress on greenhouse gases visible

    The Zurich-based company Integrale Planung GmbH(Intep) has launched a new emissions tracker designed to make it much easier for SMEs to get started with carbon footprinting, according to a press release. The web-based tool also visualises the results and enables a multi-year comparison. The aim is to make progress clearly visible and measurable.

    The Emission Tracker is based on the Greenhouse Gas Protocol and covers all three scopes, including indirect emissions along the value chain. The emission factors have been scientifically validated and are updated regularly. Activity and emissions data that Intep was able to collect during its project work also enables a simplified calculation methodology using industry averages.

    The visualised results provide an overview of the main sources of emissions, from energy supply to expenditure and investment. A PDF report can be used for communication and also offers practical tips for reducing emissions. With the Emission Tracker Plus, companies can also receive an additional two hours of personalised advice from Intep experts.

    “SMEs in particular often lack the financial resources, the right tools and the necessary expertise,” explains Dr Lisa Winter, Managing Director at Intep Berlin. “With the Emission Tracker, we provide them with a low-threshold introduction to greenhouse gas balancing.” Associations, municipalities and large companies can also benefit by acquiring licences for their SME network as part of the Emission Tracker partnership.

  • Autonomous shuttle buses reach new test phase at the airport

    Autonomous shuttle buses reach new test phase at the airport

    The pilot project for autonomous shuttle buses at Zurich Airport has entered a new phase. According to a press release, the project has reached automation level 3. This means that airport employees can use the buses for their commute between the airport head (Gate 101) and the maintenance depot (Gate 130). There are security drivers on board the buses who can intervene in the event of a problem. So far, the buses have travelled without passengers in an initial test phase.

    The current success is due to the co-operation between several airport departments and the technology partner WeRide. Preparations included setting up a new IT infrastructure, hundreds of test drives and a large number of technical checks. In addition to training, regulatory requirements and technical processes were also optimised.

    In a further phase, journeys are carried out without a safety driver using a remote cockpit. If these journeys without passengers are successful, the buses could then also drive autonomously without a driver. “We assume that we will be able to carry out the first tests with remote monitoring and without a safety driver by the end of the year at the earliest,” says Raphaël Glaesener, Senior Innovation Manager at Flughafen Zürich AG, in the press release. If successful, Zurich Airport would be the first in Europe with autonomous driving on its premises.

  • Lighter and stronger: new generation of network arch bridges

    Lighter and stronger: new generation of network arch bridges

    A new border bridge has been spanning the Oder near Küstrin since last year. It is held in place by a network arch with a span of 130 metres and 88 carbon girders. According to a recently published Empa press release, these carbon tensioning cables were developed by Carbo-Link, an Empa spin-off from Fehraltorf. The carbon carriers are made of carbon fibre reinforced plastic (CFRP).

    This innovative material not only enables flexible processing, but also saves a large amount of carbon dioxide that would be released by conventional steel constructions. The use of carbon fibre beams significantly reduces the dead weight compared to conventional flat steel hangers. Around 500 tonnes of steel and 1350 tonnes of reinforced concrete were saved in the construction.

    A major advantage of the new suspension cables is their high tensile strength and lower fatigue than steel. Most of the fatigue tests were carried out by a team from Empa’s Structural Engineering department and confirmed the necessary fatigue strength of the new CFRP material. “We have thus created the basis for a new generation of filigree network arch bridges with carbon hangers as load-bearing elements,” Giovanni Terrasi, Head of Empa’s Mechanical Systems Engineering department, is quoted as saying in the press release.

    Visually, the new materials offer design freedom, as the Oder bridge shows. Carbon girders have already been used in other bridge constructions, but the special feature of the Oder bridge is that it is being used for the first time for heavy goods railway transport. Trains can pass over it at a speed of 120 kilometres per hour. The bridge has been honoured with both the German Bridge Construction Award and the British Bridges International Award.

  • Dwindling interest in electric cars in Switzerland

    Dwindling interest in electric cars in Switzerland

    Based on the results of the third AXA Mobility Survey,AXA Switzerland warns that dwindling interest in electric cars could jeopardise the mobility turnaround. According to a statement from the insurance company headquartered in Winterthur, the figures generally give reason to speak of a trend reversal for the automotive market: Between 2023 and 2025, the proportion of those planning to buy a car rose by 12 per cent to 34 per cent. At the same time, only 24 per cent are considering an electric car; in 2023, this was an option for 34 per cent. The underlying representative survey was conducted in May 2025 in cooperation with the Sotomo research institute in Zurich.

    According to the study, electric mobility is currently rejected by 30 per cent of respondents, compared to 25 per cent in 2023. The growing reservations relate to range, price and charging options. According to the press release, the used car market for e-cars continues to lag behind that for combustion engines. The reasons for this are concerns about the condition of the battery and the rapid pace of technological development. At the same time, the reputation of electric cars has fallen by 9 per cent in the past year. “Despite these obvious difficulties in getting electric cars accepted, only a minority of 38 per cent are still in favour of greater political support for the drive technology,” Sotomo Director Michael Hermann is quoted as saying.

    Regardless of the drive technology, AXA is observing that German makes are the undisputed leaders in the wake of the upturn in the automotive market; Chinese makes, particularly BYD, are catching up. Electric cars from the USA are losing popularity.

    The survey also asked what the population thinks of autonomous driving: Scepticism prevails here, mainly due to safety concerns and possible cyber attacks. The majority of car owners are concerned about the misuse of their vehicle data, according to the survey.

  • First fast-charging station for electric cars opened in Adelboden

    First fast-charging station for electric cars opened in Adelboden

    Adelboden now has its first direct current fast-charging station for electric cars. According to a press release, the station at Licht- und Wasserwerk Adelboden AG(LWA) at Dorfstrasse 36 has a capacity of 50 to 100 kilowatts. This means that electric cars can be charged within 30 to 60 minutes. LWA now offers a total of 20 public charging points at six locations in Adelboden.

    LWA sees the fast charging station as a milestone for sustainable mobility in Adelboden. “Every charging break is an invitation to explore Adelboden’s village centre,” says Pascal von Allmen, Managing Director of LWA, in the press release. This benefits not only car drivers, but also local businesses.

  • Investment in modern workplaces and training

    Investment in modern workplaces and training

    The Ferrum Group has inaugurated its new ferruBase extension at its Schafisheim site, according to a press release. With the new building, the mechanical engineering company has realised a vertical production structure that creates space for 240 new office workstations, fully equipped production rooms and a future-oriented training workshop on around 14,000 square metres of floor space. More than 1,000 guests attended the opening and were able to gain an insight into the new building during expert tours.

    According to the press release, the new building seamlessly combines modern production processes with ergonomic office design and a training workshop. During the guided tours, employees, family members and guests were able to gain an initial insight into the architecture, construction method and new machinery. Catering was also provided at the opening ceremony and a varied entertainment programme was offered.

    For Ferrum, the new building is an investment in the future viability of the company and is intended to secure jobs in Aargau in the long term. At the same time, it also demonstrates how tradition and modern technology can be successfully combined.

  • Architecture prize honours outstanding building projects in the canton of Zurich

    Architecture prize honours outstanding building projects in the canton of Zurich

    The Foundation for the Honouring of Good Buildings in the Canton of Zurich has awarded the Canton of Zurich Architecture Prize, which is presented every three years, for the eighth time. The jury honoured four projects in each of the categories of distinction and recognition for their design quality and innovative approach to current challenges, as detailed in a press release. The foundation is supported by the Canton of Zurich’s Building Department, the Zurich section of the Association of Swiss Architects, the Swiss Werkbund and Zürcher Kantonalbank.

    The Leutschenbach high-rise ensemble in Zurich and the complete refurbishment of the Im Birkenhof housing estate were recognised in the award category, as were the temporary sports buildings in the canton of Zurich and the Wallrüti school building in Winterthur.

    The ensemble of three residential buildings in Kleinandelfingen, the new extension to the Limmattal cantonal school in Urdorf, the communal living project in Roter Kamm in Zurich and the Hobelwerk, House D in Winterthur were recognised. The Swiss Life Arena in Zurich received the Audience Award. This was awarded in an online vote that ran from mid-April to the end of May.

    The foundation also honoured the Hobelwerk, Haus D in Winterthur with the sustainability award Der Grüne Leu. This honours architects who have dedicated themselves to ecological sustainability and developed their own aesthetic and architectural language.

    “Good architecture ensures well-being, efficiency and value retention. It takes sustainability into account in many dimensions. For example, in achieving the social objective of inward densification of our residential areas while at the same time creating valuable recreational spaces,” Heinz Stecher, Key Account Manager Construction/Real Estate at Zürcher Kantonalbank and member of the Foundation Board, is quoted as saying in the press release.

  • Six Innovation Awards for construction and tool solutions

    Six Innovation Awards for construction and tool solutions

    Hilti has received six awards for recently launched products at the Pro Tool Innovation Awards(PTIA) 2025 in the USA, according to a press release. The internationally active manufacturer and supplier in the construction and tool sector is headquartered in Schaan, Liechtenstein, and is active in over 120 countries. Hilti took part in the annual PTIA competition through its North American headquarters in Plano, Texas. In total, more than 400 product solutions from over one hundred manufacturers were submitted, according to the report. A jury of experts assessed the degree of innovation, performance and safety and ergonomic aspects, among other things. “We are delighted with the high level of innovation this year,” said Clint DeBoer, General Manager of the PTIA, in the press release.

    Hilti was honoured for products in various categories. The new DD 150-U-22 diamond core drill came out on top in the concrete and masonry core drill category. It works cordlessly and is equipped with an oscillating function that makes it easy to remove a core from the drill bit. The VC 5 construction hoover, the PR 400-22 rotating laser, the DSH 700-X petrol grinder, the new KCCM Kwik Cast Connect anchor system and a filter system for vacuum cleaners (VC-CB 20/40/150-X) also came out on top in other categories.

    At the Swiss innovation conference Open-i in November, the CEO of the Hilti Group, Jahangir Doongaji, talks about how research and development (R&D) is prioritised and embedded in his company. “At Hilti, we drive innovation in a targeted manner so that our customers can build more productively, safely and sustainably,” said Doongaji in the run-up to the conference. In Hilti’s R&D and test centres, experts are working on solutions for selected areas such as occupational safety, productivity and technology integration.

    Open-i sees itself as a Swiss innovation community and dialogue platform for business and science. It brings together academic and business experts and aims to pave the way for collaborations that will secure Switzerland’s leading role as an innovative and successful market. Open-i is organised by NZZConnect, a branch of the NZZ based in Bern. The conference will take place on 27 November and tickets are available now.

  • New concrete reduces CO2 emissions in the construction industry

    New concrete reduces CO2 emissions in the construction industry

    Omya is a new partner in NEST, the modular research and innovation building of Empa and Eawag in Dübendorf. In the Beyond.Zero unit, which has been based there since the beginning of 2024, they want to test a cement-reduced concrete that they developed in a joint research project, according to a statement from Empa.

    Omya contributed its expertise as a globally active specialist in industrial materials. “The fact that we can now jointly develop sustainable building materials and test them directly in NEST under real conditions accelerates the transfer of innovations into climate-friendly construction methods,” said Empa Director Tanja Zimmermann.

    This innovative building material replaces up to 70 per cent of its clinker content with natural minerals. As Empa explains, this significantly reduces its CO2 footprint. “For a new type of concrete to be widely accepted, it needs to be tested in practice,” Empa researcher Mateusz Wyrzyklowski from Empa’s Concrete and Asphalt department is quoted as saying. “By using it in the NEST Beyond.Zero unit, we can comprehensively validate our cement-reduced concrete: from processing to durability.”

    The aim is a building material “that not only fulfils the ecological requirements, but also impresses in terms of workability, mechanical properties, volume stability and durability,” says Empa. The Beyond.Zero unit goes beyond the net zero target in construction. It pursues the vision that buildings can serve as carbon sinks in the future – in other words, they will have a negative CO2 balance on balance. The construction sector currently accounts for around 28 per cent of CO2 emissions in Switzerland.

  • Chatbots every third answer is wrong

    Chatbots every third answer is wrong

    In the international Newsguard analysis, ten of the most frequently used chatbots, including ChatGPT, Gemini, Perplexity and Claude, were tested for their responses to current news topics. The average error rate is 35 per cent, which is almost double that of the previous year. Questions on politics, health and international events are particularly affected. Many systems treat dubious sources like reliable news media and pass on disinformation even if it has been deliberately placed to deceive.

    Examples of propagated fake news
    The study prominently shows how often AI is manipulated with invented scandals and political quotes. For example, six out of ten systems falsely confirmed that Moldova’s parliamentary president had insulted his people as a “herd of sheep”. Behind this was a forgery including an AI-generated audio recording and a fake news site. In another case, a chatbot spread the rumour that the Ukrainian president owned real estate worth 1.2 billion dollars, a fictitious story based on an alleged whistleblower who never existed.

    Differences between the models
    While the AI assistant Claude is considered the most reliable provider with an error rate of just 10 per cent, Gemini has an error rate of around 17 per cent. Chatbots such as Perplexity, Grok, You.com, Mistral and Meta have an error rate of between 33 and 57 per cent. Today, the systems respond immediately in almost all cases. Even if they do not use enough validated information and accept a loss of quality.

    Source situation and willingness to provide information
    The increased error rate is mainly due to the willingness of the models to provide information. Where they used to prefer to say nothing at all, they now always provide an answer. Even from uncertain or manipulative sources. Chatbots run the risk of uncritically amplifying propaganda networks or social media disinformation, especially when it comes to news from regions with few reputable websites or political campaigns.

    Consequences for information security
    The automated, convincing dissemination of misinformation by AI chatbots increases the risk dynamics in the media landscape. Fact checkers warn that disinformation is subtly seeping into everyday life and shaping social awareness. Often difficult to recognise and therefore all the more consequential! Quality assurance for AI-supported information systems is therefore becoming a key challenge for the future of digital information.

  • Pioneering civil engineering

    Pioneering civil engineering

    With a total length of 266 metres, the bridge replaces an outdated structure from 1926 that no longer met the requirements of modern rail traffic. The central component is a gleaming white network arch with a span of 130 metres, which spans the border river Oder without supports. Instead of classic flat steel cables, 88 carbon tension members made of carbon fibre-reinforced plastic are used. These hangers were largely developed, tested and assessed at the Empa Institute in Dübendorf. They replace the steel segments weighing several tonnes and thus significantly reduce the overall weight of the supporting structure. An advantage for material efficiency and design freedom.

    Economic and sustainable benefits
    The innovative bridge technology made it possible to save around 600 tonnes of steel and 1,350 tonnes of reinforced concrete. A project-specific scaffolding solution was used in the construction process to ensure efficient assembly and welding of the bridge segments. Thanks to the high fatigue, tensile and corrosion resistance of the carbon fibre cables, both the maintenance effort and the service life of the bridge are positively influenced. A sustainability study shows that the use of carbon causes around 20 per cent less CO₂ emissions than a conventional steel structure.

    International appeal and future potential
    The railway bridge can be used by freight and passenger trains at speeds of up to 120 km/h and fulfils the highest safety standards. Extensive tests by Empa confirmed the fatigue strength of the material under real loads. The bridge has received several awards, including the Bridges International Award and the German Bridge Construction Prize. It is regarded as a pioneer for the use of high-performance composite materials in infrastructure construction.

    New aesthetics and symbolic significance
    The striking, elegant arch creates an architectural accent in the border region and emphasises the connection between the countries. The network arch bridge with carbon hangers symbolises both technical innovation and ecological responsibility. In future, it could serve as a standard for comparable major projects in European rail transport.

  • How the Wolf site in Basel is becoming a residential neighbourhood

    How the Wolf site in Basel is becoming a residential neighbourhood

    The relocation of freight handling to the harbour area freed up a 16-hectare site near Basel SBB station. SBB has been pursuing the vision of a mixed neighbourhood here for years, combining living, working and leisure. The urban development plan is based on a design by Christ & Gantenbein and EM2N. The central element is a large courtyard that stretches from east to west, shields against noise and links public and private uses as a green boulevard.

    Two faces “Janusproject
    The Paris-based firm Experience, together with M-AP Architects from Lausanne, won the competition for the MF02 construction site. Their “Janus” project responds to the contrasts between the railway side and the inner courtyard with two architectural languages.

    A horizontal ribbon façade with striking concrete frames stretches towards the track side, conveying a powerful image to passing trains. Towards the courtyard, a finely structured façade with staggered balconies and greenish decorated surfaces appears.
    The construction method follows a hybrid approach of concrete skeleton and timber construction. The floor plans are compactly organised, with a clear separation between bedrooms, wet rooms and spacious living areas. Only the lack of privacy in the ground-floor flats was criticised.

    Noise protection as a design element “Binariaproject
    The “Binaria” project by Basel-based ARGE Parabase and Confirm won the competition for the MF03 construction site. It counters the street noise with a robust north façade made of reused trapezoidal sheet metal and protruding acoustic elements. In contrast, a transparent, green glass façade with balconies and plant troughs opens up to the courtyard side.
    The multi-storey passageway connecting the courtyard and the street is particularly striking. The circular ventilation grille made of sound-absorbing panels makes a strong architectural statement here. Inside, linear floor plans allow for flexible living concepts from 2.5 to 5.5-room flats. Sustainability is characterised by reused beams, recycled concrete and re-used wood.

    Pilot character with high standards
    Both winning projects pursue innovative approaches to noise protection, the flexibility of the flat layouts and the use of recycled materials. The roofs are used for photovoltaics and rainwater management, the façades are partially planted or fitted with integrated solar technology. Energy is generated from renewable sources, while shading and evaporation provide thermal insulation in summer. Special attention is paid to reversible construction. Constructions are to be screwed together instead of glued in order to facilitate subsequent reutilisation or material cycles.

    Milestones and prospects
    The new buildings in the west of the site will be realised in the first stage, with construction scheduled to begin in 2028. A second stage with a city logistics hub and additional uses will follow from 2031. Even before completion, SBB will open the site for interim use. The listed 2,000 m² railway hall will be used for sports activities, for example. The Wolf site will thus become a pilot project for urban housing construction that answers questions about noise protection, sustainability and socially mixed housing on a large scale. For Basel, this is not just an urban planning experiment, but a decisive step towards more affordable living space and a higher quality of urban life.