The Geneva building permit is often described as a labyrinth. That is a comfortable image, and it helps no one: a labyrinth has no map, a procedure does. The law on construction and various installations (LCI) sets the stages, the deadlines and the points where the timeline can slip. Here is where the weeks actually go — and which ones can be recovered.
Five acronyms that decide the timeline
Everything begins with the choice of procedure, and this choice does not belong to the applicant: it follows from the nature of the works.
- APA — accelerated procedure. It covers in particular construction planned in the fifth zone without derogation: this is the case of the detached villa. It also covers interior alterations that do not change the general appearance of the building, and new constructions of minor importance.
- DD — definitive application. Everything that falls neither under the accelerated procedure nor under a specific procedure. This is the route for apartment buildings.
- DP — preliminary application. It settles the siting, purpose, volume and layout of the project before the costs of a complete file are incurred. A key point: a response to a duly published preliminary application constitutes a decision.
- DR — request for information. An opinion from the administration with no legal weight. Useful for testing the ground, insufficient for committing.
- M and MPA — demolition, ordinary or accelerated. A complete demolition is the subject of a separate application; a partial or interior demolition can be combined with the reconstruction.
There is also the CPL, a supplementary application, which amends a permit already issued before the certificate of conformity. Foreign States and international organisations, for their part, only have access to the ordinary procedures.
The thirty days following publication
The application is published in the Feuille d’avis officielle, mentioning any derogations sought, where applicable. This opens the period that everyone dreads and few people read in full: for thirty days from publication, anyone may consult the file and the plans at the department and submit their observations in writing (LCI, art. 3 para. 2). Anyone — not just the direct neighbour, not just an association.
At the same time, the preliminary opinions of the consulted authorities run their course, and the law contains a rule here that developers underestimate: once the deadline has passed, the department may rule, with a failure to respond counting as approval without reservation. A department that does not respond therefore does not block the file. Binding preliminary opinions form an integral part of the overall decision, and only that overall decision is subject to appeal.
Once the permit has been issued, those who submitted observations are informed by simple notice. Ten days after receipt of that notice, the applicant is entitled to begin the works. Under the accelerated procedure, the department’s response deadline is thirty days.
The appeal: the only real timeline risk
This is where Geneva projects are decided. Any decision of the department may be referred to the Tribunal administratif de première instance (art. 145). The TAPI then publishes in the Feuille d’avis officielle all the appeals brought before it, and the notice states that third parties have thirty days to intervene in the proceedings (art. 147). One appeal can therefore trigger others.
The effect on the timeline is mechanical and rarely anticipated: in the event of an appeal, the permit’s period of validity is suspended for the whole duration of the proceedings, including any subsequent hearing before a federal court. In other words, the permit does not lapse during the dispute — but the works do not progress either. And a permit may only be extended twice, except in exceptional circumstances.
A permit has an expiry date
It is tempting to assume that once a permit is obtained, it is secured forever. It is not. The permit becomes void if the works have not started within two years of its publication in the Feuille d’avis officielle. A project that is authorised and then put on hold — while financing is finalised, a consortium is reorganised, or a stronger market is awaited — can therefore die a natural death.
Two mechanisms soften this rigour, and they explain a great many Geneva timelines.
An appeal stops the clock. The law is explicit: in the event of an appeal, the deadline is suspended “for the period between that publication and the end of the proceedings, including any subsequent hearing before a federal court.” A project contested for three years therefore does not lose its permit; it recovers it intact once the final ruling is handed down. The same suspension extends to the other permits issued in connection with the building permit — those for demolition or alteration in particular, which do not lapse while the case is being argued.
Extensions exist, but they are limited. The department may extend the validity of a permit by one year. And the law sets a clear limit: “Except in exceptional circumstances, a permit may only be extended twice.” The decision granting an extension is itself published in the Feuille d’avis officielle — it is therefore visible to everyone, including objectors.
For anyone buying a plot with a permit already in hand, the question to ask is therefore twofold: when was the publication dated, and was the deadline suspended? A permit issued four years ago may be perfectly valid — or extinguished. This is one of the checks in our plot due diligence, alongside the zoning and easements.
What can actually be compressed
Three levers exist, and none of them consists in moving faster than the administration.
Have what costs money later settled early. Siting, volume and purpose are settled through a preliminary application, whose published response constitutes a decision. A project that discovers its massing at the definitive application stage has already paid for plans that will need to be redone.
Treat preliminary opinions as the critical path. They are not formalities: they become an integral part of the decision. Handling them upstream, with the relevant consultants, avoids the back-and-forth that suspends the deadline every time an additional document is requested.
Speak to neighbours before the Feuille d’avis officielle, not after. The thirty days of observations are not the moment to discover a concern about overlooking, traffic or façade materials. A project explained before its publication produces documented observations rather than defensive appeals — and an appeal costs months, not days.
And if you are buying off-plan
This subject does not concern developers alone. When buying an off-plan flat, the announced delivery date is only as good as the status of the file: a permit issued with the appeal period elapsed, or a permit issued with an appeal pending, are not the same asset. The State publishes the progress of every permit file on its administrative tracking platform — the information is public; you simply need the file number.
This is the first question to ask before signing, even before the price per square metre. See the developments we are marketing — we have been supporting new-build projects in Geneva since 2012, from the finalisation of the programme through to handover of the keys. Ask a question about a current project.