Building permits in French-speaking Switzerland — a practical guide

Before starting renovation or conversion work in French-speaking Switzerland, one question comes up every time: do I need a building permit? The answer depends on the type of work, the canton, and sometimes the municipality. Getting it wrong is expensive: a stop-work order, a fine, or an obligation to restore the property at your own cost.

This guide sets out the position canton by canton, with the practical steps and the most frequent mistakes.

Works requiring a permit, a notification, or nothing at all

In Switzerland, construction and conversion work falls into three categories.

Requiring a permit (permis de construire)

Work that alters the structure, the use, or the external appearance of a building needs a building permit issued by the municipality:

• New build, extension, adding storeys
• Converting premises (change of use)
• Altering the façade (renovation involving a colour change, fitting external wall insulation — ITE)
• Installing a heat pump with an outdoor unit (the procedure varies by canton — since 2024 in the Canton of Vaud a simple notification to the municipality is enough in most cases, art. 68c RLATC)
• Roof-mounted solar panels (often a simplified procedure inside the building zone since art. 18a LAT; check protected areas)
• Significant external works (swimming pool, retaining wall, pergola)

Requiring notification (simplified procedure)

Some minor works do not need a full permit but must be notified to the municipality:

• Like-for-like window replacement
• Roof repairs that do not change the appearance
• Integrated solar panels, in some cantons
• Small interior alterations with no structural change

Requiring nothing

Purely internal, cosmetic work generally requires no formality at all:

• Interior painting, wallpapering
• Replacing floor coverings (parquet, tiling)
• Replacing sanitary fittings (bath, shower, WC) without changing the layout
• Updating standard electrical equipment

Careful: even for internal work, if you are in a PPE (propriété par étages — Swiss condominium ownership), the owners’ assembly may still have to approve certain alterations.

Procedures canton by canton

Each Romandie canton has its own procedure and timescales. The key points follow.

Canton of Vaud — CAMAC

The Centrale des autorisations en matière de constructions (CAMAC) is the single point of entry for any permit application. The file is submitted through the ACTIS-CAMAC platform and forwarded automatically to the municipality and the relevant cantonal departments.

• Platform: ACTIS-CAMAC (via vd.ch/territoire-et-construction)
• Typical timescale: 2–4 months (ordinary procedure); 3–6 months depending on complexity
• Public consultation: 30 days (municipal consultation period)

Canton of Geneva — APA / DD / DP

Permits are issued by the Office des autorisations de construire (OAC), part of the Department of Territory. Geneva distinguishes three categories: APA (accelerated procedure, for work that does not alter the general appearance of the building), DD (demande définitive, the ordinary procedure) and DP (demande préalable, to confirm a project is feasible before submitting the definitive application).

• Platform: AC-Démat (Geneva’s paperless permit platform, live since late 2022)
• Statutory APA timescale: 30 days — in practice 1 to 3 months depending on exemptions and zone
• Statutory DD timescale: 60 days — in practice 3 to 6 months
• Note: Geneva frequently requires an appointed architect (LCI art. 2 para. 3)

Canton of Neuchâtel

• Authority: Service cantonal de l’aménagement du territoire (SCAT)
• Platform: SATAC 2
• Typical timescale: 45–60 days under the simplified procedure; 3–6 months under the ordinary one
• Note: simplified procedure for small works (notification form)

Canton of Fribourg

• Authority: SeCA (Service des constructions et de l’aménagement)
• Typical timescale: 2–4 months
• Note: the prefect issues the permit; the municipality gives an advisory opinion

Canton of Valais

• Authority: inside the building zone, the municipal council with a cantonal advisory opinion (coordinated through SAJMTE / SDT); outside the building zone, the Council of State (the cantonal government) is competent
• Typical timescale: 1–3 months inside the building zone, longer outside it
• Note: areas exposed to natural hazards require additional geotechnical studies

Documents to supply

Forms vary between cantons, but a standard application includes:

• The permit application form (online or paper)
• Drawings of the existing state and of the project (signed by an architect or engineer)
• An extract from the land register
• A site plan showing distances to the boundaries
• A description of the works and materials
• Energy calculations (for projects affecting the thermal envelope)
• PPE approval if the property is in condominium ownership, and neighbours’ agreement if building on the boundary

An architect can assemble the whole application and run the procedure. See our guide to architect fees under the SIA regulations to understand the costs involved.

What a building permit costs

The total cost has two components:

• Administrative fees — municipal and cantonal charges, generally calculated as a percentage of the cost of the works (0.5–2% depending on the canton, with a minimum of CHF 200–500)
• Professional fees — if an architect prepares the application, budget CHF 2'000–8'000 depending on complexity (excluding site supervision)

For a straightforward façade renovation, total costs (fees plus application) land around CHF 1'000–3'000. For a major conversion, budget CHF 5'000–15'000.

Special cases

PPE (condominium ownership)

On top of the municipal permit, work affecting common parts (façade, roof, stairwell) requires a vote at the owners’ general assembly. Even work on privately held parts may need authorisation if the PPE rules say so — changing windows or fitting blinds, for instance.

Listed buildings and protected areas

Buildings on the cantonal inventory, or located in a protected area (old town, ISOS site), face reinforced architectural constraints. Materials, colours and proportions must be approved by the heritage and sites commission.

Heat pumps

Installing an outdoor heat pump unit generally requires authorisation, on noise and visual impact grounds. Geothermal drilling additionally requires a cantonal concession. Some cantons simplify the procedure to encourage the energy transition — check with your municipality. Energy subsidies are independent of the permit but also have to be applied for in advance.

Frequent mistakes to avoid

• Starting work before the permit is granted — risking a stop-work order, a fine, and an obligation to restore the property at your expense. Maximum fines vary by canton (LATC art. 105 in Vaud, up to CHF 100'000 in serious cases; LCI art. 137 in Geneva, up to CHF 60'000–150'000); in Neuchâtel and several other cantons the ceiling for ordinary infringements is of the order of CHF 20'000
• Confusing notification with authorisation — a notification form is not a building permit. If your project does not clearly fall under the notification procedure, ask the municipality to confirm.
• Forgetting the neighbours’ agreement — an objection during the public consultation can add several months
• Leaving the permit out of the programme — at 2 to 4 months on average, apply early so the procedure does not push your build back
• Ignoring PPE constraints — work carried out without the assembly’s approval can be challenged afterwards

Finding the right professionals

Whether or not your project needs a permit, the right professionals will guide you through the process. On Artisan Romandie you can find verified heating engineers, roofers, insulation and façade specialists and solar installers across French-speaking Switzerland.