Pergola FAQ: Building Permit or Prior Declaration in 2026

Are you thinking of installing a pergola in your garden but unsure about the administrative steps? Between a building permit and a prior declaration, it is not always easy to find your way. The planning rules that apply to pergolas are changing and raise many questions among owners. This FAQ answers the most frequent questions to help you carry out your project lawfully.

Pergolas and planning authorisation: the general rules

What is the difference between a building permit and a prior declaration?

A building permit (permis de construire) is an administrative authorisation required for larger-scale constructions. It generally applies to projects creating more than 20 m² of floor area (surface de plancher) or ground footprint (emprise au sol).

A prior declaration (déclaration préalable) is a simplified procedure for works of lesser importance. It applies in particular to constructions of between 5 m² and 20 m² of ground footprint, depending on the case.

For pergolas, the choice between these two procedures depends mainly on the area and the characteristics of the structure.

Does a pergola always need authorisation?

No, not every pergola requires planning authorisation. Small pergolas with a ground footprint of less than 5 m² are generally exempt from any administrative formality.

This exemption applies to pergolas:

• With an area of less than 5 m²
• Without permanent foundations
• That are removable or mobile
• That do not exceed a certain height

Be careful, however, of local regulations, which may impose additional constraints, particularly in protected areas.

Pergola and building permit: when is it required?

In which cases is a building permit needed for a pergola?

A building permit for a pergola becomes mandatory in several specific situations. The area is the first determining criterion.

A pergola requires a building permit where:

• The ground footprint exceeds 20 m²
• The height exceeds the local regulatory limits
• It is accompanied by significant changes to the façade
• The land is in a protected area with particular rules

How is the ground footprint of a pergola calculated?

The ground footprint is the vertical projection of the volume of the construction onto the ground. For a pergola, it is the area delimited by the supporting posts.

The calculation does not take into account:

• Decorative architectural features (cornices, canopies)
• Roof overhangs of less than 0.60 metres
• Foundations if they do not protrude above the ground

This notion of ground footprint determines the type of authorisation required, according to the regulatory thresholds.

What documents must be provided for a pergola building permit?

The building permit file for a pergola must include:

• The Cerfa form No. 13406, duly completed
• A location plan of the land
• A site plan of the constructions to be erected
• A descriptive statement of the project
• Photographs of the land and its immediate surroundings
• A representation of the external appearance of the pergola

Additional documents may be required depending on the location of the project, particularly in a protected area. The thresholds above which the file must be prepared by an architect, and the architect's duties, are set out in our article on the architect and the building permit.

Example of a prior declaration for a pergola: the procedure in detail

When should you opt for a prior declaration?

An example of a prior declaration for a pergola illustrates well the procedure to follow for medium-sized projects. This route generally applies to pergolas with a ground footprint of between 5 m² and 20 m².

A prior declaration also applies to:

• Pergolas attached to an existing building
• Changes to external appearance
• Constructions in certain particular zones
• Pergolas with a partial or full cover

How do you complete a prior declaration for a pergola?

The prior declaration uses Cerfa form No. 13703 for new constructions. This document must be completed accurately to avoid rejection.

The essential information to provide:

• Precise identification of the applicant and the land
• Detailed description of the planned pergola
• Materials and colours used
• Exact dimensions and siting
• Compliance with local planning rules

An explanatory note accompanies the form to make it easier to complete.

Which plans should be attached to the prior declaration?

The prior declaration file requires several mandatory graphic documents. These documents allow the authority to assess whether the project complies.

Documents required:

• Location plan of the land (DP1)
• Site plan of the constructions (DP2)
• Sectional plan of the land and the construction (DP3)
• Descriptive statement (DP4)
• Plan of the façades and roofs (DP5)
• Graphic document allowing the integration of the project to be assessed (DP6)
• Photograph locating the land in its immediate surroundings (DP7)
• Photograph locating the land in its wider surroundings (DP8)

Pergolas and specific rules by zone

What constraints apply in protected areas?

Protected areas impose particularly strict rules on the installation of pergolas. These zones benefit from a special legal regime for the protection of heritage.

The main constraints concern:

• Architectural appearance and permitted materials
• The dimensions and siting of the pergola
• Compatibility with the character of the place
• The mandatory opinion of the Architecte des Bâtiments de France (the State heritage architect)

In these areas, even a small pergola may require planning authorisation.

How do you check which planning rules apply?

Consulting the local urban plan (Plan Local d'Urbanisme, PLU) is the essential first step for any pergola project. This document sets the rules that apply to each zone of the municipality.

Points to check:

• The zoning of the land (zones U, AU, A, N)
• The rules on setbacks and distance from boundaries
• The height restrictions
• The required materials and colours
• Protected woodland (espaces boisés classés)

The planning department of the town hall can inform you of these local provisions.

What should you do where the property shares a boundary wall?

Installing a pergola on a boundary line raises particular legal questions. The French Civil Code strictly regulates the rights and obligations of neighbouring owners.

Precautions to take:

• Comply with the minimum regulatory distances
• Avoid direct views onto the neighbour's property
• Check that there are no particular easements (servitudes)
• Consider the visual impact on the neighbouring property

An amicable agreement with the neighbour can avoid later disputes.

Administrative steps and time limits

How long does it take to process an application?

Processing times vary according to the type of authorisation applied for and the complexity of the file. The authority has statutory time limits within which to give its decision.

Processing times:

• Prior declaration: 1 month from the filing of a complete file
• Building permit: 2 months for a single-family house
• Extended time limits in protected areas or where a public inquiry is required

Failure to respond within the time limits amounts to tacit approval by the authority, with some exceptions. How the processing time is calculated and the cases in which it is extended are covered separately in our article on the time limit for a building permit.

How do you submit your application for authorisation?

The application is filed at the town hall of the place where the land is located. Several methods are possible depending on the municipality.

Accepted methods of filing:

• Direct filing at the town hall against a receipt
• Sending by registered letter with acknowledgement of receipt
• Online filing if the municipality allows it

Keep the receipt carefully, as it starts the processing period running.

What should you do if authorisation is refused?

A refusal of authorisation is not final. The applicant has several avenues of appeal to challenge the administrative decision.

Possible appeals:

• An informal appeal to the mayor (recours gracieux) within 2 months
• A hierarchical appeal to the prefect
• Court proceedings before the administrative court
• Amending the project to remove the obstacles identified

The assistance of a lawyer who focuses on property law can be valuable in these situations.

Penalties for building without authorisation

What risks are incurred without authorisation?

Building a pergola without authorisation exposes the owner to administrative and criminal penalties. The French Town Planning Code provides for several types of prosecution.

Penalties incurred:

• Formal notice to file an application for authorisation
• Order to demolish the unlawful construction
• Administrative fine of up to €6,000 per m²
• Criminal penalties for failure to comply with formal notices

These penalties may be cumulative and generate significant costs.

How do you regularise a pergola built without authorisation?

Regularising a pergola erected without authorisation remains possible in certain circumstances. This step makes it possible to avoid administrative penalties.

Steps for regularisation:

• Filing an application for authorisation after the event
• Showing compliance with the planning rules
• Payment of a fixed fine where applicable
• Waiting for the administrative decision

Regularisation is not automatic and depends on whether the project complies with the rules in force. The method of regularisation and the risks of building without authorisation are detailed in our article on works without a permit, the 2026 thresholds and regularisation.

Practical advice for your pergola project

How do you choose the right professional?

The choice of professional directly affects the success of your pergola project. Several criteria should guide your selection in order to avoid defective workmanship.

Selection criteria:

• Experience in building pergolas
• Knowledge of local planning rules
• Professional liability insurance
• Guarantees offered on the works
• Verifiable client references

Do not hesitate to ask for several detailed quotes in order to compare the services offered.

When should you consult a lawyer who focuses on property law?

Some situations require the involvement of a lawyer who focuses on property law. This legal input can save you from costly mistakes.

Situations that justify legal advice:

• Refusal of planning authorisation
• A dispute with a neighbour
• Building in a complex protected area
• Regularising an unlawful construction
• Difficulty interpreting local rules

Preventive advice often avoids later complications.

Building a pergola requires a good understanding of the planning rules that apply to your project. Whether you opt for a prior declaration or a building permit, complying with the administrative procedures will spare you legal inconvenience. If you are in doubt about the applicable regulations or have difficulty with your applications, do not hesitate to seek the input of a property law professional who can support you effectively in carrying out your project.