What can you build in Sint-Pieters-Leeuw?
What you can build in Sint-Pieters-Leeuw depends on the plan that covers your plot – the regional zoning plan (gewestplan), a spatial implementation plan (RUP) or a special development plan (BPA) – and on 9 planning regulations: 1 from Sint-Pieters-Leeuw itself, 2 from the province of Flemish Brabant and 6 from the Flemish Region. The register lists 42 plans for Sint-Pieters-Leeuw.
At a glance
| Province | Flemish Brabant |
|---|---|
| Plans in the register | 42 (RUPs, BPAs and others) |
| Municipal regulations | 1; most recent: ‘Aanleggen van parkeerplaatsen en fietsenstallingen’ (adopted on 25 May 2023, Belgian Official Gazette 27 February 2023) |
| Provincial regulations | 2 |
| Regional regulations | 6, as everywhere in Flanders |
| All plans in the register | not reported by the municipality: if in doubt, request a planning extract |
Find out for free what you can build on your plot in Sint-Pieters-Leeuw
How much can I build in Sint-Pieters-Leeuw?
That depends on the plot: the zoning plan that applies (the regional zoning plan, a RUP or a BPA), the regulations and what is there now. The Perceelscan works it out for each address: how many m² of floor area may legally be built, and how many are already built.
Do I need an environmental permit in Sint-Pieters-Leeuw?
For most works, yes: building, renovating, demolishing and splitting a dwelling generally require an environmental permit (omgevingsvergunning, formerly called the building permit or planning permit), which you apply for through the Omgevingsloket portal. Some minor works are exempt or only require a notification: vlaanderen.be sets out the rules. For each address, the Perceelscan also shows the existing permits.
Can I demolish and rebuild in Sint-Pieters-Leeuw?
Demolition usually requires an environmental permit. What you may build afterwards is determined by the plan and the regulations that apply to the plot; heritage status, a plan in preparation or an expropriation can stand in the way. The Perceelscan sets it all out for each address.
Can I split a dwelling into several units in Sint-Pieters-Leeuw?
For Sint-Pieters-Leeuw, the register lists no municipal regulation on housing; the plan and the regional rules then apply. If in doubt, check with the municipality. Splitting a dwelling into several dwellings generally requires an environmental permit, even without any building works (see splitting a dwelling on vlaanderen.be).
How many parking spaces must I provide in Sint-Pieters-Leeuw?
In Sint-Pieters-Leeuw, the regulation ‘Aanleggen van parkeerplaatsen en fietsenstallingen’ determines how many car and bicycle parking spaces a project must provide; this depends on the number of dwellings or the floor area.
Do I need to install a rainwater tank in Sint-Pieters-Leeuw?
Often, yes, when you build, rebuild or extend a building or a paved surface: the regional regulation on rainwater (2023) then sets rules for collecting and reusing rainwater, letting it soak into the ground or buffering it. Which measure your project requires depends on its surface area. In the province of Flemish Brabant, the regulation ‘Provinciale verordening hemelwater’ also applies.
Where can I find the spatial implementation plans (RUPs) for Sint-Pieters-Leeuw?
In the register of plans and regulations (DSI) of the Departement Omgeving, with 42 plans for Sint-Pieters-Leeuw (RUPs, BPAs and others). Where no RUP or BPA applies, the regional zoning plan (gewestplan) determines the zoning. For each plot, the Perceelscan names the plan that applies, with the zone and a link to its provisions.
The planning regulations of Sint-Pieters-Leeuw
| Aanleggen van parkeerplaatsen en fietsenstallingen | adopted on 25 May 2023, Belgian Official Gazette 27 February 2023 |
|---|
Provincial regulations (Flemish Brabant)
| Provinciale verordening hemelwater | adopted on 26 September 2023 |
|---|---|
| Provinciale stedenbouwkundige verordening met betrekking tot het overwelven van grachten en onbevaarbare waterlopen | approved on 19 December 2012, Belgian Official Gazette 15 January 2013 |
What applies throughout Flanders
What the Perceelscan checks for each plot in Sint-Pieters-Leeuw
- The plan that applies: a municipal, provincial or regional RUP, a BPA, an APA or the regional zoning plan, with the zone and a link to its provisions.
- The regulations that apply to that plot: a regulation may also apply to only part of the municipality.
- How many m² of floor area may legally be built, and how many are already built.
- Plans and regulations in preparation, and expropriation plans.
- Heritage: protection, the established inventory and archaeological zones.
- Flood risk (P-score and G-score), signal areas (signaalgebieden) and PFAS zones.
- Right of pre-emption, nature, Seveso sites and sewerage in the street.
- Environmental permits on the plot and next door.
Find out for free what you can build on your plot in Sint-Pieters-Leeuw
Building near Sint-Pieters-Leeuw
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Source: DSI, the register of plans and regulations of the Departement Omgeving, retrieved on 5 October 2026. Each regulation’s record contains its full text.
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