What can you build in Watermael-Boitsfort?
What you can build in Watermael-Boitsfort (Watermaal-Bosvoorde) depends on the area of the Regional Land Use Plan (PRAS) in which your plot lies, on a special land use plan (PPAS) if one applies, on the Regional Urban Planning Regulation (RRU) and on the municipality’s regulations. In Watermael-Boitsfort, 7 PPAS apply, and there are 53 protected properties.
At a glance
| Region | Brussels-Capital Region |
|---|---|
| Postcodes | 1170 |
| PPAS | 7 in force, 0 in preparation, 0 repealed |
| Municipal regulations | 1 in the urban.brussels register |
| Pre-emption perimeters | none current |
| Protected properties | 53 |
| Legal inventory | 672 properties |
| Natura 2000 | Domaine Château Charles Albert, Forêt de Soignes, Domaine d'Ursel and others |
| Number of m² that may be built | not yet calculated in Brussels |
Find out for free what you can build on your plot in Watermael-Boitsfort
How much can I build in Watermael-Boitsfort?
That depends on the plot: the area of the Regional Land Use Plan (PRAS) in which it lies, a special land use plan (PPAS) if one applies, the Regional Urban Planning Regulation (RRU) and the municipality’s regulations. For each address, the Perceelscan report states which area and which PPAS apply, with a link to their provisions; in Brussels, it does not yet calculate the m² of floor area.
Which special land use plans (PPAS) apply in Watermael-Boitsfort?
In Watermael-Boitsfort, 7 special land use plans apply, including the most recent ones: ‘ZONE 2 COIN DU BALAI’ (2015), ‘PPAS ZONE 7 - WIENER’ (2011) and ‘ZONE 10 LA HERONNIERE’ (1993). A PPAS only applies within its own area: for each address, the Perceelscan tells you whether one covers the plot.
Do I need a planning permit in Watermael-Boitsfort?
For most works, yes: building, renovating, demolishing and changing the number of dwellings generally require a planning permit, and some activities also need an environmental permit; some minor works are exempt. You can see which permits already exist for an address on openpermits.brussels; the Perceelscan report lists the files for the plot.
Is my property listed as heritage in Watermael-Boitsfort?
Watermael-Boitsfort has 53 protected properties (listed or on the safeguarding list) and 672 properties in the legal inventory of architectural heritage. As a rule, a protected property cannot be demolished; the inventory is not a form of protection. For each address, the Perceelscan tells you whether the building is protected, lies in a protection zone or is in the inventory.
Is there a right of pre-emption in Watermael-Boitsfort?
According to the register, there is no current pre-emption perimeter in Watermael-Boitsfort. The Perceelscan checks this for each address.
Which municipal urban planning regulation applies in Watermael-Boitsfort?
For Watermael-Boitsfort, the urban.brussels register lists a municipal urban planning regulation. It applies alongside the Regional Urban Planning Regulation (RRU), which is in force throughout Brussels; a municipality may have other regulations too, so if in doubt, check with the municipality. The municipal regulations are listed by urban.brussels on urbanisme.irisnet.be.
Is Watermael-Boitsfort in a Natura 2000 area?
Part of Watermael-Boitsfort is: Domaine Château Charles Albert, Forêt de Soignes, Domaine d'Ursel, Etang de Boitsfort (Etang du Moulin), Berge Ecole Internationale, Domaine Silex and 5 more. A project there may require an appropriate assessment, and within 60 m of those areas an assessment of its impact on nature; for each address, the Perceelscan tells you whether the plot lies inside or next to one.
The special land use plans (PPAS) of Watermael-Boitsfort
| PPA N° 6 PLATEAU DE BOITSFORT | in force since 16 January 1967 |
|---|---|
| PPAS ZONE 7 - WIENER | in force since 13 January 2011 |
| ZONE 1 SOUVERAIN EST PARTIE SUD | in force since 18 March 1993 |
| ZONE 10 LA HERONNIERE | in force since 1 April 1993 |
| ZONE 2 COIN DU BALAI | in force since 1 October 2015 |
| ZONE 2 TER ETANGS DE BOITSFORT | in force since 21 February 1989 |
| ZONE 4 SOUVERAIN OUEST | in force since 18 March 1993 |
What the Perceelscan checks for each plot in Watermael-Boitsfort
- The PRAS area with a link to its provisions, and the special land use plans (PPAS) and master development plans (PAD) with their status.
- Heritage: listing, the safeguarding list, protection zones, the legal inventory, UNESCO and the archaeological atlas.
- Flood hazard (2025 map), shallow groundwater and no-build zones along watercourses.
- The soil condition inventory and PFAS.
- Right of pre-emption, Natura 2000, nature reserves and Seveso sites nearby.
- Planning permits and environmental permits on the plot.
Find out for free what you can build on your plot in Watermael-Boitsfort
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Source: BruGIS (perspective.brussels and urban.brussels) and Brussels Environment, open data under CC BY 4.0, retrieved on 11 October 2026.
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