Why choose Avenir Renovations?
Why expand instead of moving? A profitable and practical real estate strategy
Before embarking on a real estate project involving a change of address, it is essential to consider the advantages of extending your current property. In Switzerland, where real estate prices are particularly high in many regions, keeping your home and adapting it to your needs is often more profitable than purchasing a new property.
Avoid the hidden costs of moving
Buying a new home involves many indirect costs: notary fees, real estate agency fees, moving costs, rearranging the new home, not to mention the emotional impact of changing neighborhoods, schools for children, or commute times. In contrast, expanding your home allows you to stay in a familiar living environment, while significantly increasing the value of your real estate assets.
Adapting your home to your new needs
Space requirements evolve over time. A new child, the development of remote work, the desire to create an independent studio, or simply the improvement of living comfort are all reasons that motivate an extension. This allows you to have a tailor-made home, without compromise on location or lifestyle.
What types of extensions are available for a house in Switzerland?
Before entering the design phase, it is important to identify which type of extension is best suited to your land, your goals, and local regulations. Avenir Renovations offers several solutions based on your situation.
How does a home extension project with Avenir Renovations work?
A home extension project requires rigor, coordination, and anticipation. That’s why our custom support is based on a proven methodology, led by a dedicated project manager.
Every project begins with a thorough technical visit: we analyze your existing building, the constraints of the land, the networks, the exposure, the topography, and above all... the urban planning rules. We provide you with a clear report, accompanied by a preliminary budget estimate.
We work in partnership with Swiss architects, who design your extension according to your tastes, goals, and budget. With our 3D modeling tools, you can visualize the final result before the work begins.
In Switzerland, building permit applications vary from canton to canton. Our team takes care of everything: preparing the file, scale plans, municipal or cantonal forms, technical notices, energy calculations... up to obtaining the building permit.
We select local partner companies recognized for their seriousness, competence, and respect for deadlines. All trades are represented: structural work, electricity, plumbing, heating, carpentry, plastering, etc.
A detailed construction schedule is provided to you from the start, and you benefit from regular reporting until the completion of the work.
How much does a home extension cost in Switzerland?
The cost of a home extension varies significantly depending on the type of work, materials used, complexity of the site, and location. Here is an indicative range to help you frame your budget.
| Type of extension | Average price per m² (CHF incl. tax) |
| Single-storey wooden extension | 2,200 to 3,000 CHF |
| Masonry extension (brick/concrete) | 2,800 to 3,800 CHF |
| Complete storey addition | 3,200 to 4,500 CHF |
| Fit-out of attics | 1,500 to 2,800 CHF |
| Conservatory or winter garden | 2,000 to 3,500 CHF |
| Turnkey independent studio | 2,500 to 4,000 CHF |
A precise quote is provided after a technical visit, taking into account your objectives, local constraints, and potential aids.
Regulations for home extension in Switzerland: What you need to know
Before starting extension work, it is crucial to understand the rules governing the extension of a house in Switzerland. Swiss regulations are cantonal and municipal, with notable differences from one area to another.
Building permits and local authorizations
Any extension exceeding certain surface area or volumetric modification thresholds requires a building permit. The application must generally include:
- Before/after plans
- Cadastral documents
- Thermal justifications (according to SIA 380/1 standard)
- Architectural notice
- Consultation with neighbors (in some cases)
In cantons like Vaud or Geneva, processing times can range from 1 to 4 months. It is advisable to account for these delays in your overall planning.
Land occupancy coefficient (LOC) and maximum height
Each buildable plot in Switzerland is subject to a LOC (land occupancy coefficient) and a height limit. These data determine the allowable building volume on your land. It may sometimes be necessary to request a waiver, especially for storey additions.
Our teams conduct a comprehensive regulatory analysis to secure your application and anticipate sensitive points.
Respect for neighborly rights
In Switzerland, neighborly rights are highly protected. The extension of your house must not infringe on the light, view, or tranquility of neighbors. In some cases, a public inquiry is mandatory, and appeals can delay the project if the processing is poorly conducted.
This is why our local expertise is essential to anticipate objections and build a project in full compliance with the legislation.
Energy requirements in Switzerland: A sustainable and efficient extension
Before any construction, integrating Swiss energy requirements is a mandatory step. Any extension must meet high thermal standards, in a logic of energy efficiency, sustainability, and comfort.
SIA standards and thermal performance
The SIA 380/1 standard imposes limits on the energy consumption of buildings. Each extension must present a high-performance thermal envelope (insulation, glazing, airtightness), associated with an energy-efficient heating system.
Our projects systematically include an energy study, and we offer tailored solutions: wood wool, triple-glazed windows, underfloor heating, etc.
Ecological labels (Minergie, CECB)
To go further, Avenir Renovations can assist you in achieving a Minergie label, which values buildings with very low energy consumption. Similarly, we help you obtain a CECB+ (Cantonal Energy Certificate for Buildings), highly valued in the real estate market.
These certifications are not only guarantees of quality but can also entitle you to public subsidies.
What financial aid is available for an extension in Switzerland?
Extending a home represents a significant investment. Fortunately, some public aids are available, especially if the extension contributes to improving the energy performance of the housing.
The Buildings Program (Confederation + Cantons)
This federal program financially supports energy renovation work, including when it concerns a heated volume extension. The amounts vary by canton but can represent several thousand francs.
Example: in Vaud, a high-performance external insulation combined with renewable heating (heat pump, solar) can be subsidized up to 15,000 CHF.
Specific cantonal subsidies
Each canton has its own provisions:
- Geneva: subsidies for sustainable storey addition
- Fribourg: aid for attic fit-out
- Valais: support for solar self-production
- Neuchâtel: bonus for renovation + extension
Our teams assist you in the preparation of the aid application to maximize your return on investment.
Examples of extensions completed in Switzerland
Avenir Renovations has already assisted numerous homeowners with their extension projects. Here are some concrete examples of realizations in different cantons.
House in Lausanne (VD): Wooden extension on the ground floor
- Created area: 32 m²
- Purpose: living room and office corner
- Materials: wooden frame, Douglas fir cladding, green flat roof
- Feature: Minergie thermal performance
Storey addition in Geneva: Creation of a complete floor
- Created area: 65 m²
- Purpose: 2 bedrooms + bathroom
- Structure: lightweight concrete elevation
- Construction time: 4 months, permit obtained in 3 months
Independent studio in Sierre (VS): Rental housing
- Area: 25 m²
- Usage: furnished rental
- Features: bathroom, kitchenette, autonomous heating
- Net yield: 6.8%/year
FAQ: Everything You Need to Know About Home Extensions in Switzerland
Is a permit required to extend my house?
Yes. In most cases, a building permit is required, even for small extensions. Only certain very light fit-outs may be exempt, but this depends on local regulations.
What is the average duration of a home extension project?
Generally, expect 3 to 6 months of work, depending on the complexity of the project. Additionally, administrative processing times can take 2 to 4 months.
Can I extend my house even on a small plot?
Yes, provided that the land occupancy coefficient (LOC) and distances from property boundaries are respected. We assess your plot on a case-by-case basis to check feasibility.
Can my neighbor oppose the project?
They can file an objection during the public inquiry. This is why it is essential that the project complies with neighborly rights and is well presented in the administrative file.
Does an extension increase my taxes?
The addition of living space is taken into account by the cantonal tax administration, which may lead to a slight increase in property tax. However, the appreciation of the property largely offsets this impact.
Is it profitable to create a rental unit in my garden?
Yes. Many clients have chosen to create an independent studio to rent out, with a gross annual return of up to 6 to 8% depending on the region.
Expand Your Home with Avenir Renovations
Extending a house in Switzerland is a unique opportunity to enhance your property, adapt your home to your evolving needs, and improve your daily quality of life. It is essential to have the right support.
With Avenir Renovations, you benefit from:
- comprehensive support
- local technical expertise
- complete administrative management
- certified and diligent professionals
- a dedicated project manager at your service
We guarantee a managed project, respected timelines, and results that meet your expectations.
Contact us today for a free, no-obligation consultation. Our teams in Switzerland are ready to turn your ideas into concrete reality.
