An immediate deadline
This is the most urgent information in this article. The Walloon grant scheme is currently being recast.
The current grant regime ends on 30 September 2026. Every application, final invoice included, must be submitted by that date at the latest. The repeal is fixed by decrees of March 2025.
Two practical consequences.
An application submitted before that date remains governed by current conditions, on available information for several years. Files lodged in time will be dealt with under the old regime even if processing continues after October.
A project that can be completed and invoiced before the end of September is therefore a matter of programme, not merely of technical choice.
For a project under consideration the question is simple: can the works be finished and invoiced in time. The construction timetable determines which support regime applies.
What changes on 1 October 2026
The Walloon Government presented this reform in December 2025 and approved its terms on 16 July 2026, at first reading. The implementing texts were therefore not definitively adopted at the date this article was checked.
The announced main lines are as follows.
| Element | What is announced |
|---|---|
| General logic | move from direct grant to loan |
| Rénopack | zero-rate loan, with a reduction in the sum repayable equivalent to a subsidy |
| Rénoprêt | preferential-rate loan, for other categories of beneficiary |
| Central condition | an improvement in energy label required |
| Basis of calculation | the overall project, no longer item by item |
| Audit | energy audit before and after the works |
The change of nature is the essential point. It will no longer be possible to obtain support without going through a loan arrangement. Support remains real but changes form, and that alters every funding plan.
Two further shifts deserve attention.
The focus on the poorest-performing dwellings. Support is announced as concentrated on dwellings with a weak label, with graduated improvement requirements.
The capping of the annual envelope. The reform sits in a context of acknowledged budget overrun, and available funds will govern effective access.
Exact amounts, ceilings and income categories are presented divergently across sources and will depend on the final texts. They are not reproduced here for that reason.
Energy requirements for new build
Two levels currently compound.
Since 1 January 2021, buildings to be constructed must meet the Q-ZEN standard, with a high level of insulation, controlled airtightness and use of renewable energy.
Since 1 January 2026 a further requirement applies: new and equivalent buildings must incorporate at least 35 % renewable energy in their annual primary energy consumption. For buildings whose useful area reaches or exceeds 1,000 m², that percentage must include at least 15 % from systems using a renewable source.
For refurbishment, the requirements applicable since 2017 remain unchanged.
Consent periods
Processing runs from 75 to 115 days depending on the procedure, from a complete file. Applications are lodged with the municipality.
Wallonia therefore sits between Flanders, which is faster, and Brussels, which is markedly slower. A reform of the territorial code in May 2025 also widened the list of works exempt from consent.
An indirect mechanism worth knowing
The energy label has a financial effect that does not run through support schemes. It governs the indexation of rents.
In Wallonia the label governs rent indexation, the poorest-performing dwellings no longer being able to benefit from it. For a landlord, refurbishment ceases to be a decision about capital and becomes one about yield.
A heavier prospect is added: a timetable of works obligations for purchasers is under consideration from 2028, with periods running from the deed. That timetable was recast in December 2025 and its terms are not settled.
What this means for an estimate
Four rules.
Check the feasibility of submitting before 30 September 2026 on any Walloon refurbishment project in progress.
Do not base a funding plan on grants after that date without having verified the definitive texts of the new regime.
Include the cost of the energy audit, mandatory under both the old and the new regime, and doubled after the works under the announced regime.
Reason in cost of finance rather than in grant amount for any project after the changeover.
This article reflects regulation at the date of checking and serves professional orientation. It does not constitute legal advice and does not replace assessment of the individual case.