All answers on construction reception in Belgium.

The provisional reception is the first step: it validates the end of works, records the visible reservations and triggers the two-year warranty and the warranty of perfect completion. The final reception takes place at least one year later, verifies the lifting of reservations, triggers the ten-year liability and releases the 5% retention.

No, but it is strongly recommended. Without an expert, you risk signing minutes that fail to mention defects which would have been visible to a trained eye. The cost of an expertise (480-880 € incl. VAT for a house) is negligible compared to the corrective works it allows you to impose on the builder.

A provisional reception for a single-family home lasts on average 3 to 4 hours. The final one is shorter (1 to 2 h) as it focuses on the lifting of reservations. Be wary of a contractor who offers you a 30-minute reception: it is technically impossible.

Yes — you can refuse reception if the defects are substantial and make the property uninhabitable. In that case the contractor must resume the works and call a new date. You can also accept with reservations, which is the most frequent solution.

The Breyne Law applies to any sale or construction of a dwelling by a contractor or developer acting for a private buyer, as soon as the overall price exceeds 25,000 €. It covers the house, the VEFA new-build apartment and heavy renovation equivalent to reconstruction.

The security deposit is a mandatory financial guarantee that the contractor must provide before the notarial deed. For a registered contractor it is 5% of the total price blocked at the notary's. For an unregistered one it is 100% covered by completion insurance. Without a security deposit, the contract is void.

Three warranties combine: the warranty of perfect completion (1 year, covers all reported defects), the two-year warranty (2 years, dissociable equipment: boiler, sanitary fittings, taps) and the ten-year liability (10 years from the final reception, structural defects and structural shell). They are of public order.

If the defect is structural and appears within 10 years, ten-year liability applies: send a registered formal notice to the contractor, have an expert report drawn up, and start proceedings if needed. The prescription period is 10 years from the final reception.

Prefer an independent expert (never appointed by your builder), with verifiable technical training (civil engineer, architect, or accredited expert). Check his professional insurance, ask to see a sample minutes, and require a detailed quote before the visit. Be wary of rates that are too low (under 350 €) which hide an expedited expertise.

Yes — an expert can establish an amicable report admissible in court, draft a circumstantial report, and accompany you before the enterprise court. For complex disputes, a judicial expertise can be ordered by the judge (shared cost). Never sign a transaction with the contractor without prior expert advice.