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Before starting your renovation work in Belgium, it is essential to ask yourself a crucial question: do you need a planning authorization? Too many individuals undertake projects without knowing the legal obligations that govern building transformations, and find themselves facing sanctions, additional costs, or blockages.
The planning rules in Belgium differ according to the Regions (Brussels, Wallonia, Flanders) and according to the nature of the work. This article explains when a permit is required, how to carry out your procedures, and above all how Avenir Rénovations supports you to ensure that your project complies with all the rules, without stress.
Neglecting administrative procedures exposes you to:
Complying with planning rules is therefore protecting your investment and ensuring the longevity of your work.
In Belgium, land use planning is a regional competence. This means that the rules, procedures, and forms differ between Wallonia, Brussels, and Flanders. What you can do without a permit in one region may be strictly prohibited in another.
According to the Brussels Code of Territorial Development (CoBAT), a permit is necessary for:
Some works can be carried out without a permit if they meet certain criteria:
An architect may sometimes be required, even for "simple" works. It is therefore recommended to consult administration urban.brussels or to go through an experienced professional like Avenir Rénovations.
Wallonia requires an application for a urban planning permit in the following cases:
Some works benefit from an exemption, provided they meet specific dimensions:
In case of doubt, it is always better to seek assistance to avoid misinterpretation of the CoDT.
Planning permit: Avenir Rénovations manages your file with the architect. Submission to the town hall, deadlines of 30 to 115 days depending on the project, then legal display of 30 days on site.
In simpler cases (interior renovation, replacement of coverings, painting, etc.), an architect is not required.
At Avenir Rénovations, we work directly with certified Belgian architects to ensure the compliance of your plans and speed up your procedures with the municipalities.
The Belgian Regions offer assistance for energy or structural renovation. But obtaining the permit is often a prerequisite for unlocking the grants.
Examples:
Not applying for a permit can cost you thousands of euros in assistance. Hence the importance of professional support.
From the first contact, our experts conduct a urban planning feasibility analysis: does your project require a permit? An architect? A heritage authorization? This allows us to:
We take care of:
If your project requires it, we will connect you with a certified architect. We coordinate exchanges and plans to streamline the entire process.
Have you already carried out work without a permit? We assist you in:
| Region | Work requiring a permit | Average deadlines | Examples of exempted work |
| Brussels | Facade, roof, terrace, transformation, ventilation | 60 to 115 days | Identical frames, painting |
| Wallonia | Volume, facade, external insulation, annex | 30 to 90 days | Insulation < 20 cm, non-load-bearing interior |
| Flanders | (not covered here) | (varies) | (to be added if needed) |
Carrying out renovation work in Belgium without a permit is rarely a good idea. The consequences can be costly, legal, and administrative. The best way to secure your project is to be accompanied by an experienced company, in connection with local authorities.
Avenir Rénovations, with its national presence and new Belgian agencies, offers you a complete and smooth service, including:
Request your free appointment with a project manager from Avenir Rénovations to assess your needs, anticipate the procedures, and start your work legally.
