Building Permits in Western Switzerland: Which Works, Which Process

Building, extending or converting in western Switzerland cannot be improvised: depending on the nature of the works and the canton, you need a permit, a simple notification, or sometimes nothing at all. The rules come from federal law, cantonal laws and municipal regulations alike.

This guide covers the works concerned, the competent authorities from Geneva to the Jura, and how to prepare an application without losing time. For any specific case, the municipality remains the authoritative source.

Which works need a building permit in western Switzerland

The general logic is the same from one canton to the next: anything that permanently changes the land, the building or its use is in principle subject to authorisation. Four families of projects typically come up.

• A new building: a detached house, an apartment block, an annexe or an outbuilding of significant size. For a project of this kind, see the page on house construction.
• An extension: raising the roof, a side extension, an enclosed conservatory, an additional room. The page on house extension covers these projects in detail.
• A change of external appearance: altering the facade or roof, adding or removing openings, a noticeable change of colours or materials. A project that seems harmless within the plot may be visible from the street, and it is that visibility that counts.
• A change of use: turning a shop into a home, a storeroom into a workshop, an attic into living space. The use of the building changes, even if the structure stays the same.

The key point to remember: the size of the project is not always the criterion. A small project may require a permit, while a substantial interior renovation may not. Hence the value of asking the question before signing a quote.

Notification rather than permit: the case of solar installations

Some works do not go through the full procedure. This is notably the case for solar installations: Art. 18a of the federal Spatial Planning Act (LAT) provides, for solar installations meeting the conditions it sets, a simple notification to the competent authority rather than a standard building permit.

This relaxation is not a blank cheque. The conditions of application, the form of the notification and special cases, notably protected buildings or sensitive sites, should be checked with the municipality or the competent cantonal department. Before starting the installation, ask whether your roof falls within the notification regime.

Who decides: Geneva, Vaud, Fribourg, Neuchâtel, Valais and Jura

The authority that examines and issues the permit differs from one canton to another. Here is what you need to know for each.

Geneva

In Geneva, the decision rests with a cantonal office. Applications are therefore submitted at cantonal level rather than to the municipality alone, even though the municipality is consulted.

Vaud

In the canton of Vaud, the municipality decides. Files go through CAMAC, the central body that coordinates the opinions of the cantonal departments concerned before the municipality rules.

Fribourg

In Fribourg, applications go through the FRIAC platform, which centralises submission and consultation of the departments concerned.

Neuchâtel

In the canton of Neuchâtel, SATAC acts as the one-stop office for permit applications.

Valais and Jura

In both Valais and Jura, competence lies with the municipality or the canton depending on the project. The nature and location of the works therefore determine who to deal with. In these two cantons, a first call to the municipality avoids submitting the file to the wrong place.

In every case, start with the municipality: even when the decision is taken elsewhere, its building department knows the local regulations, the zone of your plot and the steps to follow.

Public notice and neighbours’ objections

A project subject to authorisation is, as a general rule, put out to public notice. In practice, the file is published and can be consulted for a period set by cantonal rules. The exact deadline appears in the official publication.

During this period:

1. Neighbours and other people affected can view the plans.
2. They can lodge a reasoned objection within the stated deadline.
3. The authority examines the objections, may propose conciliation, then rules.

An objection does not automatically mean a refusal, but it can delay the schedule. A few habits help to prevent them:

• inform your immediate neighbours before publication, with the plans to hand;
• check that the dimensions, distances and heights comply with the zoning regulations;
• make the file easy to read: a clear file prompts fewer questions.

The steps of a well-run application

Without promising any timescale, here is the usual sequence.

1. Ask the municipality. Describe the project, state the plot, and ask whether a permit or a notification is needed and which documents to provide.
2. Have the plans drawn up. For a new building or an extension, these documents are generally prepared by a professional. An architect knows what the authority expects from the file.
3. Submit the file to the competent authority, through the route specific to your canton (municipal counter, CAMAC, FRIAC, SATAC or cantonal department).
4. Go through the public notice period and respond, where necessary, to objections.
5. Receive the decision, with any conditions to comply with.
6. Start only once the permit is final. Works begun too early risk being stopped.

Common mistakes to avoid

• Ordering before you have the answer. Signing a contract with a contractor before knowing whether the project will be approved is an unnecessary financial risk.
• Underestimating a change of use. Fitting out an attic or converting premises without asking can cause problems, even with no change to the exterior.
• Believing an interior project escapes everything. A renovation affecting the structure, the use or safety may have its own requirements.
• Relying on a neighbour or a past project. Each plot has its own zone, constraints and regulations; what was tolerated elsewhere does not apply to you.
• Ignoring protected buildings. If your house is listed or located in a protected area, the requirements may be stricter.
• Building without a permit in the hope of regularising. The authorities can order works to stop or the original state to be restored.

What affects the cost of a project subject to authorisation

A permit is only one part of the budget, and that budget depends on many factors specific to each situation. Without quoting any amount, here is what weighs in:

• the scale of the project and the complexity of the plans to be produced;
• the use of an architect or other specialists;
• the requirements of the site: zone, protected building, constraints from neighbours;
• any changes requested by the authority or arising from an objection;
• the time the procedure takes, which can push back the start of the works;
• the nature of the works themselves, once the permit has been obtained.

Only a quote drawn up for your own project can put a figure on the whole. Do not base yourself on a neighbouring case.

When to call in a professional

For a simple notification, for example for solar panels, a specialist company often supports the process. For anything involving a new building, an extension or a significant conversion, a building professional saves time: compliant plans, a complete file, dialogue with the authority.

If your project is still vague, start by clarifying what you want to build or convert, then consult the municipality. After that, you can request a quote: your request is passed on to craftspeople and companies in the region, who will contact you to prepare a free, no-obligation offer.

Key points for your project in western Switzerland

The cantons do not organise the procedure in the same way, but the reflex remains the same everywhere: ask the municipality first, find out whether the project falls under permit or notification, then prepare a solid file before committing to any works. The information in this guide is a set of general pointers and does not replace the opinion of the competent authority.