Wallonia Renovation Grants 2026: the 30 September Deadline and the New Loan Regime

If you own a home in Wallonia and you have been putting off insulation, new windows or a heat pump, 2026 is the year to act. The Wallonia renovation grants 2026 — the Primes Habitation run by the Walloon Public Service (SPW) — are entering their final months. Every application, including the final invoice, must reach the Region by 30 September 2026. After that, a new loan-based system takes over. This guide explains the multipliers that decide how much you receive, the spending cap, the all-important audit logement rule, and what changes on 1 October.

Key facts (2026)

• Hard deadline: all Primes Habitation applications — including the final invoice — are due 30 September 2026.
• Income multipliers on every base amount: R1 ×6, R2 ×4, R3 ×3, R4 ×2 (the base figure applies to co-owner associations).
• 2026 income brackets: R1 ≤ €28,900 · R2 ≤ €41,100 · R3 ≤ €54,300 · R4 ≤ €122,800; above €122,800 there is no grant (−€5,000 per dependent).
• Spending cap: the grant can never exceed 70% of the invoice (R1/R2) or 50% (R3/R4).
• Audit logement first — mandatory before subsidised works, except the roof.
• Technical thresholds: roof insulation R ≥ 5.0 m²K/W; heat pump COP ≥ 3.5 (EN 14511 A7/W35); air-to-air heat pumps are excluded.
• From 1 October 2026: a new loan-based regime replaces the grants (announced, not yet legally adopted).

How the multipliers actually work

Walloon grants do not publish a single euro figure. Instead, each eligible measure carries a base amount, and your household income decides which multiplier is applied to it. The lower your income, the higher the multiplier — and the bigger your grant.

The four income categories run from R1 (the lowest incomes, multiplier ×6) up to R4 (multiplier ×2). The base amount itself is what a co-owner association would receive. So a household in R1 receives six times the base figure for the same work.

A few worked examples, using the official 2026 base amounts:

• Roof insulation: base €20/m². In R1 that becomes €120/m²; in R4, €40/m². Using a bio-sourced insulant raises the base to €26/m², so up to €156/m² in R1.
• Air-to-water or geothermal heat pump: base €600. That is €3,600 in R1 and €1,200 in R4.
• Window and glazing replacement: base €26/m², so €156/m² (R1) down to €52/m² (R4).
• Wall insulation: base €8.8/m² (€12/m² bio-sourced), giving up to €52.8/m² or €72/m² in R1.

The 2026 income brackets are: R1 ≤ €28,900, R2 ≤ €41,100, R3 ≤ €54,300 and R4 ≤ €122,800. Each dependent child lowers the threshold that applies to you by €5,000, which can move you into a more generous category. Above €122,800 there is no Primes Habitation grant at all.

The 70% / 50% cap

The multiplier is generous, but it is not unlimited. A second rule caps the grant against your actual invoice: it can never exceed 70% of the eligible invoice for R1 and R2 households, or 50% for R3 and R4. If the multiplied base figure would push you above that line, you receive the capped amount. Always keep your invoices — the cap is checked against them.

The audit logement comes first (except the roof)

This is the single rule that catches most homeowners out. With one exception, you must have an audit logement carried out before any subsidised work begins. The audit is performed by a Wallonia-accredited auditeur Logement, who inspects your home, recommends a logical order of works, and registers the report on the Region's server. A grant is only paid for works the audit recommended.

The audit itself is subsidised: a base of €76, multiplied like everything else — so €456 in R1, down to €152 in R4.

The exception is the roof. Roof and attic work — covering, frame, rainwater goods, and roof or attic insulation — needs no prior audit. If your only project this year is the roof, you can apply directly. This is also why the roof is often the best first move before the 30 September deadline: there is no audit step to schedule first.

The technical thresholds that unlock the grant

Doing the work is not enough; it has to hit the Region's performance numbers. The headline thresholds for 2026 are:

• Roof / attic insulation: total R ≥ 5.00 m²K/W.
• Wall insulation: R ≥ 4.00 m²K/W (a single threshold now covers exterior, cavity and interior insulation).
• Floor / slab insulation: R ≥ 3.50 m²K/W.
• Windows and glazing: glazing Ug ≤ 1.10 W/m²K and a mean window-plus-door Uw ≤ 1.50 W/m²K.
• Heat pump (heating or combined): COP ≥ 3.5 at the reference condition (EN 14511 A7/W35), or the equivalent SCOP values in the technical annexes. Crucially, air-to-air heat pumps are excluded from the grant. From 1 January 2026 the installer must be RESCert-certified.

Why the heat-pump rules matter for your PEB label: the label is in primary energy per m². Electricity carries a factor of about 2.5 versus roughly 1 for gas, yet a well-sized heat pump still beats a condensing gas boiler on the label because it delivers three to four units of heat per unit of electricity. Pair it with whole-envelope insulation and you move the label far more than glazing alone.

What changes on 1 October 2026

The current grant regime has been in force since 14 February 2025 and is explicitly temporary. From 1 October 2026 it is due to be replaced by a loan-based system: instead of a per-measure grant, support would come through loans (a zero-interest Renopack and an income-dependent Renopret) applied to your whole project, with aid conditioned on raising your PEB label by at least one band and a prior audit still required.

One important caveat: at the time of writing this new regime is an orientation note, announced but not yet legally adopted. The practical takeaway is simple — if your works are ready, applying under the current grants before 30 September is the safer route, because the figures and conditions are known.

Plan it around the deadline

With limited months left, sequence matters. A sensible order for many Walloon homes:

1. Book the audit logement now if you plan anything other than roof-only work — auditor diaries fill up before deadlines.
2. Start with the roof if you want a quick, audit-free win.
3. Bundle the envelope (roof, walls, floor) before changing the heating, so the heat pump can be sized correctly and qualify under the easier low-temperature criteria.

Before you commit, it helps to see the likely PEB class jump and the grants you qualify for in one place. Qote gives you an instant renovation estimate with a label-jump projection and subsidy matching for your address — a fast way to check whether a 30 September application is worth chasing. For the very different Brussels picture, see our companion guide on renovating in Brussels in 2026, or explore the method on the Qote homepage.

Frequently asked questions

When is the deadline for Wallonia renovation grants in 2026?

All Primes Habitation applications, including the final invoice, must reach the Walloon Region by 30 September 2026. From 1 October 2026 a new loan-based regime is expected to replace the grants.

Do I always need an audit logement before applying?

Almost always. An audit logement is mandatory before any subsidised work — except roof and attic work (covering, frame, rainwater goods and insulation), which can be applied for without a prior audit.

How much can I get from the Wallonia grants?

Each measure has a base amount multiplied by your income category — ×6 (R1), ×4 (R2), ×3 (R3), ×2 (R4). The grant is then capped at 70% of the invoice for R1/R2 or 50% for R3/R4.

Are air-to-air heat pumps eligible in Wallonia?

No. The Primes Habitation heat-pump grant requires an air-to-water or geothermal unit meeting COP ≥ 3.5 (EN 14511 A7/W35). Air-to-air heat pumps are excluded. A federal 6% VAT rate still applies to eligible heat pumps.

What roof R-value do I need for the grant?

Roof or attic insulation must reach a total thermal resistance of R ≥ 5.00 m²K/W. The roof is also the one measure that needs no prior audit logement.

---

Ready to act before 30 September? Get your instant Qote estimate and see your label jump and Walloon grants in two minutes.