How to Obtain a Building Permit (permis De Construire) in France: Step‑by‑step

Any person planning to build, substantially extend or significantly alter a structure in France will, in most cases, need to obtain a building permit, the permis de construire, before work can begin. Understanding how to obtain a building permit in France is essential for property owners, developers, general contractors and in‑house counsel who need to navigate a multi‑stage administrative process governed by the Code de l’urbanisme. The permit is issued by the mayor of the commune (or, in limited cases, by the prefect) and the application is filed at the local town hall (mairie) or through the national online filing portal.

This guide sets out the full procedure, from eligibility checks and document preparation through to instruction timelines, costs, 2026 regulatory changes and remedies if a permit is refused.

Overview of the Building Permit Process and Who It Applies To

A permis de construire is the principal planning authorisation required under the Code de l’urbanisme for construction projects in France. It applies to new buildings, major extensions, changes of use that alter the external appearance of a structure, and any works that create more than 20 m² of additional surface de plancher (floor area), or more than 40 m² in zones covered by a Plan Local d’Urbanisme (PLU) where the total resulting floor area exceeds 150 m². Smaller projects that do not meet these thresholds typically require only a déclaration préalable (DP), a lighter prior‑notification procedure.

The permit is granted by the mayor on behalf of the commune, applying the local planning rules set out in the PLU or the carte communale. Where no local plan exists, the Règlement National d’Urbanisme (RNU) applies. Applicants file their dossier at the mairie of the commune where the land is located, or submit it digitally through the commune’s online planning portal. Once submitted, the commune’s planning department, sometimes with input from external consultants such as the Architecte des Bâtiments de France (ABF) for heritage sites, examines the application during a statutory instruction period before issuing a decision.

Do you need a building permit in France? The answer is yes for any project involving new construction above the thresholds set out above, structural modifications to a listed or protected building, or a change of use combined with works affecting the building’s exterior. Projects below those thresholds may still require a déclaration préalable, so applicants should always consult the mairie or review the applicable PLU before starting works.

Eligibility and Prerequisites for a Building Permit in France

Any natural or legal person may apply for a permis de construire, provided they hold a legal right over the land, typically as owner, co‑owner with a mandate, lessee under a bail à construction, or authorised representative holding a written mandate from the owner. Foreign nationals and foreign‑registered companies may apply on the same basis, although a mandate to a local representative is strongly recommended for correspondence and site‑display obligations.

Before assembling the dossier, applicants should complete several prerequisite checks. First, obtain or consult the commune’s PLU (or carte communale) to confirm that the proposed project is compatible with local zoning, density limits and design rules. Second, consider requesting a certificat d’urbanisme, an optional but highly advisable document issued by the mairie that confirms the applicable planning rules and any servitudes (easements) or infrastructure constraints affecting the plot. Third, determine whether the site falls within a protected area, a secteur sauvegardé, the perimeter of a monument historique, a natural‑risk zone or a Natura 2000 site, as this will trigger additional consultations and potentially extend the instruction period.

Finally, confirm whether the project requires an environmental impact assessment (EIA), which applies to larger developments or those in environmentally sensitive locations.

The Architect Obligation: The 150 m² Rule

French law requires the involvement of a registered architect for any building permit application where the resulting total surface de plancher exceeds 150 m². This threshold applies to the total floor area of the building after completion of the proposed works, not merely to the new construction. Individual private persons building a house for their own use are exempt from the architect requirement only where the total floor area, including extensions, stays at or below 150 m². All legal entities (companies, SCIs, developers) must use an architect regardless of project size.

Engaging an architect early, ideally during the pre‑application phase, ensures that plans meet the technical standards required by the mairie and reduces the risk of a request for supplementary documents during the instruction period.

How to Obtain a Building Permit in France: The Step‑by‑Step Procedure

The permis de construire process follows a structured sequence from initial project planning through to works commencement. The six steps below cover each stage, the responsible party and the typical duration.

Step 1: Carry Out Pre‑Application Checks and Prepare a Project Brief

Begin by consulting the commune’s PLU or carte communale to verify zoning designations, permitted building heights, density ratios (coefficient d’emprise au sol), setback requirements and any architectural design prescriptions. Check the cadastral records at cadastre.gouv.fr to confirm plot boundaries and surface area. Identify whether the site lies within the perimeter of a listed monument historique (typically 500 metres), a protected natural area or a flood‑risk zone. If any of these apply, the instruction period may be extended and additional consultations, notably with the ABF, will be mandatory. Requesting a certificat d’urbanisme at this stage provides an authoritative snapshot of applicable rules and alerts the applicant to constraints that might require project redesign before the formal application is filed.

Step 2: Prepare the Plans and Assemble the Dossier

The application dossier must include the completed Cerfa permis de construire form, a full set of architectural plans and several supporting documents. The Cerfa form collects project details, applicant identity and plot identification. Plans must include, at a minimum, a site plan (plan de situation), a ground‑level plan (plan de masse), floor plans, cross‑sections, façade elevations and a landscape integration plan (insertion paysagère). All plans must be drawn to scale and clearly annotated with dimensions. Where the 150 m² architect obligation applies, these plans must be prepared and signed by a registered architect.

In addition, the dossier typically requires a descriptive statement (notice descriptive) explaining the project’s materials, colours and landscaping; recent photographs of the site showing the surrounding environment; a cadastral extract; proof of ownership or a signed mandate; and, where applicable, any environmental or heritage reports. Submitting an incomplete dossier is the single most common cause of delay: the mairie will issue a request for supplementary documents, which suspends the instruction clock until the applicant responds.

Step 3: Submit the Dossier to the Mairie or Online

The completed dossier is submitted either in paper form at the mairie of the commune where the plot is located, typically in four copies, with additional copies if consultations are required, or electronically through the commune’s online urban‑planning portal. Since 1 January 2022, all communes with a population of 3,500 or more have been required to accept electronic submissions under the national dematerialisation policy. The mairie issues a receipt (récépissé de dépôt) stating the date of submission and the reference number of the application. This date is critical: it triggers the start of the instruction period and determines the deadline by which the commune must render its decision.

Step 4: Instruction by the Commune

During the instruction period, the commune’s planning department reviews the dossier for compliance with the applicable PLU, building regulations, servitudes and any environmental or heritage constraints. If documents are missing or plans are unclear, the mairie sends a letter requesting supplementary information (demande de pièces complémentaires). The applicant typically has three months to respond. Crucially, this request suspends the instruction clock: the statutory deadline is extended by the time taken to supply the missing items. Where the project falls within a protected area, the commune must consult the ABF and, in some cases, the Commission départementale de la nature, des paysages et des sites.

These consultations add time to the instruction period, and the extended deadline is communicated to the applicant in writing.

Step 5: Receive the Decision, Grant or Refusal

At the end of the instruction period, the mayor issues a formal decision. A grant may be unconditional or subject to specific conditions (prescriptions), for example, requiring particular exterior materials or restricting construction hours. The decision is notified to the applicant by registered letter. If the commune fails to issue any decision within the statutory instruction period, silence is generally treated as a tacit grant (permis tacite), although this rule has important exceptions for projects in protected areas or those requiring EIA. A refusal must be reasoned: it must cite the specific planning rules or constraints that the project violates. A reasoned refusal is the starting point for any appeal.

Step 6: Display the Permit and Commence Works

Once the permit is granted, the applicant must display a standardised permit notice board (panneau d’affichage) on the site, visible from the public highway. The board must show the applicant’s name, the permit reference number, the nature and height of the construction, the plot area and the date the permit was issued. This display triggers a two‑month recourse period during which any interested third party may challenge the permit before the administrative court. The applicant must also notify the mairie of the start of works (déclaration d’ouverture de chantier). Works may begin as soon as the display obligations are met, but developers often wait until the two‑month challenge window closes to reduce the risk of an injunction halting construction.

Required Documents for a Building Permit in France

The documents needed for a permis de construire application are prescribed by the Code de l’urbanisme. Submitting a complete and correctly formatted dossier is the single most effective way to avoid instruction delays. The table below lists the core required documents, who issues them and key formatting requirements.

Applicants should check with the mairie for any locally specific supplementary requirements, as some communes request additional visualisation materials or neighbour notifications beyond the standard list. Assembling these documents before submission, and having an architect review the dossier for completeness, substantially reduces the risk of a stop‑the‑clock request during instruction.

Timeline and Key Deadlines in the Permis de Construire Process

The statutory instruction periods for a building permit in France are set by the Code de l’urbanisme and run from the date the mairie acknowledges receipt of a complete dossier. These timelines are firm but can be extended by specific triggers.

Projects in zones requiring consultation with the ABF, an EIA or input from a regional commission may see the instruction period extended to 5 or even 6 months. The mairie must notify the applicant of any extended deadline within one month of receiving the dossier. When planning a construction timeline, developers and contractors should account for a realistic total elapsed time of 5–8 months from dossier submission to works commencement, factoring in any supplementary‑document requests and the two‑month display period after the decision.

The permit’s three‑year validity can be extended by filing a request with the mairie at least two months before the expiry date. Each extension adds one year, and two extensions are permitted, giving a maximum validity of five years. If the applicable PLU changes during the validity period, the permit generally remains valid under the rules in force at the date of its original grant.

Costs, Fees and Tax Considerations for a Building Permit in France

There is no direct government fee for filing a permis de construire application in most communes. The principal costs are professional fees and development taxes. The table below provides a practical cost framework.

The taxe d’aménagement is the largest financial obligation linked to a building permit. It is not a fee paid at the time of application but a tax levied on the creation of new floor area. The rate comprises a communal component (set by the commune, typically between 1% and 5%), a departmental component and, in the Île‑de‑France region, a regional component. The tax is calculated on the surface taxable created, multiplied by a flat‑rate value per square metre set annually by decree. Applicants should request a simulation from the mairie or use the online calculator on service‑public. fr to estimate liability before committing to a project budget.

VAT at the standard rate applies to architect and contractor fees, and specific reduced rates may apply to renovation works on residential buildings older than two years.

What Changes in 2026: Relance Logement, PLU Reviews and Dematerialisation

Several developments in 2026 have a practical impact on how to obtain a building permit in France. Applicants preparing dossiers this year should be aware of three converging trends.

First, the French government’s Relance Logement programme, aimed at accelerating housing production, is driving a higher volume of permit applications across many communes. Industry observers expect this to create processing backlogs in smaller municipalities that lack dedicated planning staff, making it more important than ever to submit complete dossiers and to follow up proactively during the instruction period.

Second, numerous communes are in the process of revising their PLU during 2025–2026. A PLU revision can alter permitted densities, building heights, setback rules and design requirements. Applicants should verify the status of the commune’s PLU before filing: if a revision is underway, the commune may apply transitional rules or defer decisions pending adoption of the new plan. Requesting a certificat d’urbanisme provides a dated snapshot of the rules applicable to the plot, offering a degree of protection against mid‑process rule changes.

Third, administrative dematerialisation continues to expand. Since 1 January 2022, all communes with a population of 3,500 or more have been required to accept online planning applications. In 2026, the practical effect is that digital submission has become the norm in most urban and peri‑urban areas. Applicants filing electronically should ensure all plans are in the correct format (typically PDF/A), that file sizes comply with portal limits, and that they retain the electronic acknowledgement of receipt as proof of the submission date.

Common Pitfalls in the Building Permit Process and How to Avoid Them

• Incomplete dossier. The most frequent cause of delay. The mairie will issue a request for supplementary documents, suspending the instruction clock. Mitigation: use a checklist, have an architect review the dossier before submission and cross‑reference against the commune’s specific requirements.
• Failure to consult the PLU before designing the project. Projects that contravene density, height or design rules will be refused. Mitigation: obtain and review the PLU, or request a certificat d’urbanisme, before commissioning plans.
• Not engaging an architect when required. Filing without an architect when the 150 m² threshold is exceeded renders the application invalid. Mitigation: confirm total resulting floor area early and engage an architect if there is any doubt.
• Ignoring heritage or environmental constraints. Failure to identify that the site falls within an ABF consultation zone or a natural‑risk area can result in refusal and wasted fees. Mitigation: check commune maps and the atlas des zones inondables before filing.
• Incorrect plan scales or missing annotations. Plans that do not meet the prescribed scales or lack dimension annotations are routinely returned. Mitigation: follow the format specifications in the Cerfa form instructions and have the architect validate all drawings.
• Failing to display the permit board correctly. An improperly displayed or missing board can restart the two‑month third‑party challenge period or expose the applicant to enforcement action. Mitigation: use a regulation‑compliant board, display it on the date the permit is received and photograph it in situ as evidence.
• Not budgeting for the taxe d’aménagement. This tax can represent a significant cost, particularly for large‑area projects in communes with high local rates. Mitigation: request a simulation from the mairie or calculate it using the online tool before committing to the project budget.
• Ignoring local servitudes or easements. Servitudes restricting building lines, access rights or utility corridors can invalidate a project. Mitigation: review the note de renseignements d’urbanisme and the cadastral records for any registered servitudes.
• Starting works before the challenge period expires. While legally permissible once the permit is granted and displayed, commencing works during the two‑month recourse window carries the risk of an injunction if a third party files a challenge. Mitigation: for high‑value projects, wait until the challenge period closes before mobilising to site.
• No permit contingency in construction contracts. Developers and general contractors should include a permit contingency clause in their contracts, providing for suspension or termination of the construction contract if the permit is refused, revoked or made subject to onerous conditions. Additional protective clauses include extension‑of‑time provisions and price‑adjustment mechanisms linked to permit delays.

What to Do If Your Building Permit Application Is Refused

A refusal must be accompanied by written reasons citing the specific planning rules or constraints the project fails to satisfy. The applicant has two principal avenues. The first is a recours gracieux: a formal letter to the mayor requesting reconsideration of the decision, filed within two months of notification. The mayor may grant the permit, refuse again, or remain silent, silence for two months is treated as a confirmation of the refusal. The second avenue is a recours contentieux: an appeal before the tribunal administratif, also filed within two months of notification (or within two months of an implicit rejection of a recours gracieux).

Given the strict deadlines and the need to identify the precise legal grounds for challenge, engaging a construction lawyer promptly after receiving a refusal is strongly advisable. A construction lawyer in France can assess the merits of the refusal, advise on the prospects of a successful appeal and manage the recourse proceedings within the applicable time limits.

Sources

1. Service‑public.gouv.fr, Permis de construire
2. Ministère de la Transition écologique, Dematerialisation of urban planning authorisations
3. Notaires de France, Building permit in France
4. Legifrance, Code de l’urbanisme
5. Service‑public.gouv.fr, Entreprendre (professional/commercial building applications)
6. FrenchPlans, Brief guide to planning permits in France
7. French‑Property.com, Planning permission in France
8. RDAvocats, Étapes pour obtenir un permis de construire
9. Cadastre.gouv.fr
10. Service‑public.gouv.fr, Taxe d’aménagement