On paper, the issuance of a building permit can go very quickly.

The instruction period is in principle 2 months for a detached house and its annexes and 3 months for other projects.

It is also necessary to present a concrete file to avoid seeing the procedure dragging on.

Know your rights

Obtaining a building permit is essential from the moment your project involves the new construction, even without foundations, of more than 20 m2 of floor area or footprint, regardless of whether it is The act of enlarging your house (with some exceptions in certain areas) or adding an annex such as a garage.

Likewise, very large swimming pools are also concerned (shelter over 1.80 m high or pool over 100 m2).

Therefore, the planned construction must comply with the rules of the local urban plan, or PLU, in force in the municipality and which governs not only the nature of the buildings but also their exterior appearance.

The color of the facade, the shutters or even the type of roofing material to be used and the degree of inclination of the roof slope can in particular be dictated by the PLU.

So get information from the start of your project with your town hall or visit its website to learn more.

Likewise, the official Geoportail-urbanisme.gouv.fr platform lists a good number of municipal PLUs, even if they are not yet all online.

A substantiated case

Any request for planning permission, whether it is a prior declaration of work or a building permit, requires a complete file (in four copies, not including additional copies for certain documents). bringing together a number of essential documents, failing which the request will soon be rejected. The objective is in fact to provide the municipality with the means to assess whether your project complies with local regulations. It is therefore a question of describing the planned materials, the colors, the heights, the type of installation, etc.

Certain documents are in particular compulsory, starting with a notice describing the land and presenting the project.

There are also several graphic documentations such as the site plan of the land inside the municipality, the ground plan of the constructions, the sectional plan which specifies the location of the building in relation to the profile of the land, the plan of facades and roofs for all projects, as well as sketches or computer simulations of the project and other photos of the land able to locate it.

Please note: the town hall may ask you for missing or additional documents in the month following the submission of the file.

You will then have 3 months to complete it, otherwise your request will be considered rejected.

A regulated display

Once the validation order has been obtained, you will still need to install a regulatory display panel on your land, serving to inform the neighborhood of your future site and leaving any person who considers themselves aggrieved a period of 2 months to contest the authorization. that was granted to you.

And it is better to be able to prove that the sign has been affixed correctly, otherwise your project will remain enforceable for 6 months after completion of the work!

To avoid any subsequent litigation, it is therefore recommended to call on a bailiff to establish a legal notice of display as soon as the panel has been installed.

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Using a pro

Between the tedious reading of the PLU, a legal regulation which is difficult to understand for beginners, the complexity of the building permit file and the respect of crippling legal deadlines, this administrative procedure is particularly difficult to carry out for individuals. To put all the chances on your side, it is therefore better to delegate these tasks to a professional.

This is notably the role of the architect, whose recourse is in any case obligatory beyond 150 m2 of floor area.

Below this threshold, the owner can otherwise mandate the company responsible for running the site to apply for a permit.

Another option: go through a company specializing in the facilitation of legal procedures such as Allow me to build.

Since 2016, the online start-up has indeed offered to take charge of the entire process, from the analysis of urban planning regulations to the constitution of the file and its sending and until the supply of the sign. display so that the work can begin.

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