Construction law in Switzerland is essentially a cantonal matter, framed by federal spatial planning law. Any construction or transformation of a structure must, except in exceptional cases, be subject to prior authorisation issued by the competent authorities. PBM Avocats intervenes in Geneva — where the Law on Constructions and Various Installations (LCI) applies — and in the canton of Vaud — governed by the Law on Spatial Planning and Construction (LATC) — to advise and represent clients at every stage of the administrative procedure.
The Federal Framework: The Spatial Planning Act (SPA)
The Federal Spatial Planning Act (SPA, SR 700) is the foundation of construction law in Switzerland. It establishes the main principles of land use: separation of built and non-built territory, zoning (building zone, agricultural zone, protected zone), combating urban sprawl and coordination of cantonal and municipal land-use plans. Cantons must adapt their legislation to the SPA and establish cantonal master plans approved by the Federal Council.
The 2014 revision of the SPA introduced strict obligations to densify building zones and reduce oversized areas. These orientations have had significant consequences for building possibilities: some municipalities have had to reclassify land formerly available for construction into the agricultural zone. Conversely, densification projects in existing urban zones are encouraged, which multiplies legal questions relating to building rights, land use indices and neighbourhood relations during construction of new buildings.
The Building Authorisation Procedure: Geneva (LCI) and Vaud (LATC)
In Geneva, the Law on Constructions and Various Installations (LCI) regulates the authorisation procedure in detail. The application is submitted to the Department of Territory, which consults various specialist services (environmental protection, heritage, mobility, etc.) and subjects the project to public enquiry. Neighbours and legitimate associations have 30 days to file a reasoned objection. The department then issues its decision; in the event of refusal or maintained objections, the project owner may appeal to the Administrative Tribunal of First Instance (TAPI), then to the Court of Justice (Administrative Chamber).
In the canton of Vaud, the LATC organises a similar procedure. The building permit application is submitted to the municipality, which subjects it to public enquiry for 30 days. The municipality issues a decision, subject to the advisory opinions of cantonal specialist services for certain projects. Appeal channels pass through the Cantonal Court (Administrative and Public Law Court), then the Federal Supreme Court. In both cantons, PBM Avocats assists project owners in building a complete and robust file, anticipating foreseeable objections and responding effectively to opposition.
Objection and Administrative Appeal Channels
The public enquiry procedure opens up the possibility for injured third parties to file an objection against a construction project. To be admissible, the objection must be filed within the statutory deadline and by a person with standing to act — generally neighbours directly affected by the project or legally recognised protection associations. The objection must be reasoned and precisely identify the grounds invoked: violation of building height standards, breach of legal distances, impact on sunlight or visual openness, non-conformity with the zoning.
If the objection is maintained after investigation, the authority issues a decision which can be challenged before administrative courts. The procedure may take several years, particularly when appeals to the Federal Supreme Court are filed. PBM Avocats represents project owners seeking to quickly validate their permit and neighbours who wish to contest projects contrary to their rights, at all levels of the administrative and judicial hierarchy.
Compliance and Administrative Sanctions
Carrying out construction without authorisation or in breach of permit conditions exposes the project owner to severe administrative sanctions: injunction for immediate cessation of works, reinstatement order, administrative fines and, where applicable, criminal prosecution. Cantonal authorities have broad discretion to order demolition of an unlawful structure, even if it was built in good faith.
Retrospective regularisation — consisting of filing an authorisation application for an already-completed construction — is possible when the structure complies with current zoning and construction standards. Otherwise, only an administrative appeal against the reinstatement order may enable a delay to be obtained or an alternative solution found. PBM Avocats intervenes as soon as the situation comes to light to minimise legal consequences and find the best possible outcome.
Frequently Asked Questions about Building Permits
What works require a building permit in the canton of Geneva?
In the canton of Geneva, the Law on Constructions and Various Installations (LCI) requires construction authorisation for all works involving new buildings, transformations, enlargements, changes of use or demolitions. Certain minor works — such as fitting solar panels under defined conditions, or non-structural internal modifications — may benefit from simplified procedures or regulatory exemptions. The competent cantonal department (DT/DALE) is the authority empowered to issue authorisations. It is strongly recommended to consult a lawyer before undertaking any works, as the consequences of construction without authorisation (demolition, fines, reinstatement) can be very severe.
Who can file an objection to a building permit?
Under Geneva law, neighbours who have a legitimate interest in obtaining cancellation or modification of the authorisation may file an objection, as may environmental protection associations and organisations with a legal right of appeal. In the canton of Vaud, the public enquiry procedure provided for by the LATC allows any person to consult the file and submit observations within 30 days. The objection must be reasoned and filed within the statutory deadlines. PBM Avocats advises neighbours wishing to oppose a project and project owners faced with objections.
What is the agricultural zone and what constructions are permitted there?
The agricultural zone is defined by the Federal Spatial Planning Act (SPA) as a zone intended for long-term agricultural use. Apart from agricultural operations meeting legal criteria, new constructions are in principle prohibited there (principle of separation of built and non-built areas, art. 16 SPA). Exemptions are permitted in strictly defined cases under art. 16a et seq. SPA and cantonal implementing legislation: constructions indispensable for agricultural operations, housing for operators, certain rural tourism installations. Violation of agricultural zone rules may lead to a reinstatement order, with no possibility of acquisitive prescription.
How does the building authorisation procedure work in Geneva?
In Geneva, the building authorisation application is submitted to the competent cantonal department (Building Authorisation Directorate within the Department of Territory). The file comprises architect's plans, official forms, required technical reports and supporting documents depending on the type of project. Once submitted, the application is subject to public enquiry for 30 days during which any interested third party may file an objection. The department investigates the file, consults specialist services (ORCA, SPI, DGAN, etc.) and issues its decision. In the event of rejection or maintained objection, successive appeal channels are available: Administrative Tribunal of First Instance (TAPI) then Court of Justice.
What should I do if a construction has been carried out without authorisation?
A construction carried out without authorisation or in breach of the authorisation conditions is illegal. Cantonal authorities have the power to order compliance or demolition of the disputed structure, regardless of the owner's good faith. Under Geneva law, this power is imprescriptible for constructions outside the building zone. For constructions in the building zone, retrospective regularisation (building authorisation application for an already-completed construction) is sometimes possible if the building complies with current standards. PBM Avocats advises clients in these sensitive situations and seeks the best solutions for regularising the situation or contesting administrative injunctions.