What can you build in Tienen?
What you can build in Tienen 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 Tienen itself, 2 from the province of Flemish Brabant and 6 from the Flemish Region. The register lists 20 plans for Tienen.
At a glance
| Province | Flemish Brabant |
|---|---|
| Plans in the register | 20 (RUPs, BPAs and others) |
| Municipal regulations | 5; most recent: ‘Gemeentelijke stedenbouwkundige verordening erfgoed’ (adopted on 25 January 2024, Belgian Official Gazette 28 March 2024) |
| Provincial regulations | 2 |
| Regional regulations | 6, as everywhere in Flanders |
| All plans in the register | yes, according to the municipality |
Find out for free what you can build on your plot in Tienen
How much can I build in Tienen?
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 Tienen?
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. Tienen also has its own rules on this in the regulation ‘Vergunningsplichtige bestemmingen en bestemmingswijzigingen’. For each address, the Perceelscan also shows the existing permits.
Can I demolish and rebuild in Tienen?
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. Tienen has its own rules for buildings of heritage value in the regulation ‘Gemeentelijke stedenbouwkundige verordening erfgoed’.
Can I split a dwelling into several units in Tienen?
In Tienen, the regulation ‘Versterken woningkwaliteit’ applies to this. For each address, the Perceelscan tells you which regulations apply to the plot. 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 Tienen?
In Tienen, the regulation ‘Parkeerplaatsen’ 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 Tienen?
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.
Can I cut down a tree in Tienen?
Tienen has its own rules on this in the regulation ‘Beplanting’. Whether cutting down (felling) a tree requires an environmental permit depends on the tree and its location; the regulation and the Flemish rules specify this.
Where can I find the spatial implementation plans (RUPs) for Tienen?
In the register of plans and regulations (DSI) of the Departement Omgeving, with 20 plans for Tienen (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 Tienen
| Gemeentelijke stedenbouwkundige verordening erfgoed | adopted on 25 January 2024, Belgian Official Gazette 28 March 2024 |
|---|---|
| Versterken woningkwaliteit | adopted on 24 September 2020, Belgian Official Gazette 19 November 2020 |
| Parkeerplaatsen | approved on 26 June 2014, Belgian Official Gazette 26 August 2014 |
| Vergunningsplichtige bestemmingen en bestemmingswijzigingen | approved on 3 August 2006, Belgian Official Gazette 7 September 2006 |
| Beplanting | approved on 2 December 1993 |
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 Tienen
- 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 Tienen
Building near Tienen
- What can you build in Hoegaarden?
- What can you build in Glabbeek?
- What can you build in Linter?
- What can you build in Boutersem?
- What can you build in Landen?
- What can you build in Kortenaken?
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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