You check a Walloon property’s planning compliance by requesting the urban information from the commune, reviewing the permit history, and comparing what was authorised against what is actually built. The notary confirms the position in the deed under the CoDT (2026).
Checking planning compliance means answering one question: does every part of the building match a valid permit? The work combines official records with an eye on the ground.
Start with the commune. Each municipality holds the planning file and can issue urban information (renseignements urbanistiques) on a parcel, listing the permits granted, the zoning that applies and any known infraction. Request this early, because it is the authoritative source. The cadastral extract and the previous notarial deed add useful history, showing surfaces and construction dates that should line up with the permits.
Then compare. Walk the property with the plans from the permits and look for anything added or changed without authorisation: a veranda, an extra room in the attic, a garage turned into living space, a change of use from single family to multiple flats. Under the CoDT the notary will also verify the planning situation and record it in the deed (CoDT, 2026), but the seller who checks first controls the narrative.
The counter-intuitive trap: a property can be old enough that some works predate the modern permit regime, yet a later modification may still be an infraction. Age alone does not guarantee compliance. Where doubt remains, an architect or a surveyor can reconcile the built reality with the authorised plans. Easyhome runs this cross-check as part of preparing every mandate, so issues surface before a buyer’s notary finds them.
At a glance
- Request urban information (renseignements urbanistiques) from the commune
- Review the permit history for the parcel
- Read the cadastral extract and the previous notarial deed
- Compare authorised plans against what is actually built
- Look for verandas, attic rooms, converted garages, use changes
- The notary verifies and records the position in the deed (CoDT, 2026)
- Age of the building does not by itself prove compliance
- Use an architect or surveyor where doubt remains