What can you build in Leuven?

What you can build in Leuven 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 13 planning regulations: 5 from Leuven itself, 2 from the province of Flemish Brabant and 6 from the Flemish Region. The register lists 83 plans for Leuven.

At a glance

Find out for free what you can build on your plot in Leuven

How much can I build in Leuven?

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. In Leuven, the general building regulation of Leuven (2024 revision) lays down a fixed rule in art. 2.3 and 2.4: a single-family house in terraced or semi-detached development may have a ground floor of at most 15 m² per metre of frontage or 100 m², and upper floors at most 12 m deep; for detached development, the built-up area depends on the size of the plot. Exceptions are sometimes possible; the Perceelscan applies the rule to the shape of the plot.

Do I need an environmental permit in Leuven?

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. Leuven also has its own rules on this in the regulation ‘Vergunningsplichtige functiewijzigingen’. For each address, the Perceelscan also shows the existing permits.

Can I demolish and rebuild in Leuven?

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. Leuven has its own rules for buildings of heritage value in the regulation ‘Stedenbouwkundige Verordening Erfgoed’.

Can I split a dwelling into several units in Leuven?

For Leuven, the register lists no separate regulation on housing, but the general regulation ‘Algemene bouwverordening Stad Leuven - Gedeeltelijke herziening 2024’ may contain rules on it. For each address, the Perceelscan lists the regulations that apply to the plot, with a link to their text. 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 Leuven?

In Leuven, the regulation ‘Herziening van de stedenbouwkundige verordening op het aanleggen van autoparkeerplaatsen en fietsenstallingen buiten de openbare weg’ 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 Leuven?

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 Leuven?

In the register of plans and regulations (DSI) of the Departement Omgeving, with 83 plans for Leuven (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 Leuven

Provincial regulations (Flemish Brabant)

What applies throughout Flanders

What the Perceelscan checks for each plot in Leuven

• 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 Leuven

Building near Leuven

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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.

Updated on 11 October 2026