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What may I build on my plot?

What you can build on a plot in Flanders depends on four layers of rules. The zoning says whether building is allowed and for what: it comes from a spatial implementation plan (RUP), a development plan (BPA or APA) or the regional zoning plan (gewestplan). In a subdivision, the subdivision rules say how. On top of that come the planning regulations of the municipality, the province and the region, and the rules on heritage and water. You almost always need an environmental permit (omgevingsvergunning), and the authority then also checks whether the project fits into its surroundings (VCRO art. 4.3.1).

What is the plot zoned for?

The zoning decides whether building is allowed and for what: housing, farming, nature, business. It comes from the most specific plan that covers the plot. That plan consists of a map and provisions, and an application that conflicts with the provisions is refused, unless a rule allowing a departure applies (VCRO art. 4.3.1).

Which plan takes precedence and when a permit may depart from it is explained in the guide to the zoning plan; what each zone of the gewestplan allows, in the one on the gewestplan; and how a RUP works, in the one on the RUP.

Is the plot part of a subdivision?

A subdivision (verkaveling) is land that has been divided into lots under a permit in order to build homes on them. That permit contains rules on how the subdivision is laid out and how the lots may be built on (VCRO art. 4.2.15).

If the subdivision is more than fifteen years old, its rules are no longer a ground for refusing a permit, except those on roads and public green space. The municipal council can decide that they continue to apply after all, and the authority may still refer to them when judging whether a project fits into its surroundings (art. 4.3.1).

Which regulations come on top?

A planning regulation is a set of building rules for a whole area, regardless of the zoning. The region, the province and the municipality can each adopt them (VCRO art. 2.3.1 and 2.3.2), among other things on rainwater, parking, the number of dwellings in a building and the dimensions of buildings. For example, the regional regulation on rainwater often requires, for buildings and paved surfaces, a facility that lets rainwater soak into the ground.

How many regulations of its own each municipality has, and on what, is shown in the ranking of building rules by municipality.

What do heritage and water change?

For a protected monument or in a protected townscape or village view, the Onroerend Erfgoed agency advises on the application, and even works that need no permit can require an authorisation or a notification (Immovable Heritage Decree art. 6.4.4). In the established inventory of architectural heritage, demolition always requires a permit. More on this in the guide to heritage.

For every permit, the authority also examines whether the project harms the water system; it can then impose conditions or refuse the permit (VCRO art. 4.3.1). That examination is the water test.

What is allowed without a permit?

For a new house you always need an environmental permit, and an architect. An extension built onto the house, such as a conservatory, also requires a permit: the notification that used to be enough was abolished on 1 March 2026.

Small works are exempt, such as a free-standing garden shed or a terrace within certain dimensions. The full list, with the dimensions and the places where it does not apply, is in the guide to building without a permit.

How does the authority assess your application?

Meeting all the provisions does not yet give certainty. The authority also tests every application against good spatial planning (goede ruimtelijke ordening): does the project fit into its surroundings? The VCRO lists, among other things, the function, mobility, scale, use of space and building density, the visual appearance and nuisance (art. 4.3.1, § 2). If a RUP, a BPA or a subdivision itself regulates those points, those provisions serve as the yardstick.

Certainty in advance comes from a planning certificate: in it the municipality says whether a specific project can reasonably be permitted. How an application proceeds and when a permit lapses is explained in the guide to permits.

How do you check it yourself?

For a first picture you do not need the municipality:

Vlaanderen.be advises always checking with the municipality as well: local rules can be stricter.

What the Perceelscan shows

The Perceelscan applies these layers to a single address: the plan in force, with the zone and a link to the provisions, the regulations, the plans in preparation, heritage, flooding, the permits on the plot and next door, and how many m² of floor area can be built under the rules.

The sample report shows what this looks like. For your own address, the free preview shows how many potential obstacles the plot has; the full report costs €29. The report is not a permit and not a planning certificate: whether your project is permitted is decided by the authority.

And in Brussels or Wallonia?

The rules above apply in Flanders. In Brussels, the Regional Land Use Plan (PRAS) lays down the zoning and a special land use plan (PPAS) of the municipality refines it for a neighbourhood; on top of that come the Regional Urban Planning Regulation (RRU) and the municipality’s regulations. In Wallonia the plan de secteur, the Walloon regional zoning plan, is binding; the schémas, the guide communal d’urbanisme and a permis d’urbanisation have only been indicative there since 1 June 2017.

More on this in the guide to zoning in Brussels and the one on zoning in Wallonia.

How do I know whether my land is building land?

Look at the zoning the plan gives the plot: a new house is possible in a residential area (woongebied), including a residential area of rural character and a residential park. As a rule the land must also adjoin a sufficiently equipped road (VCRO art. 4.3.5). A housing reserve area (woonreservegebied, the former residential expansion area) is as a rule not building land as long as the municipal council has not released it.

How high and how deep may I build?

That is in the provisions of the RUP, the BPA or the subdivision, or in a municipal regulation. If they say nothing about height or depth, the authority assesses them against the surroundings: good spatial planning (VCRO art. 4.3.1).

Sources

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