EPC guide Wallonia
What is the housing energy audit in Wallonia?
Direct answer
The housing energy audit (Audit Logement) is an in-depth energy assessment of your home, carried out by an auditor certified by the Walloon Region. It identifies priority works, costs the investments, estimates the savings and sets out a renovation scenario up to label A. It is essential to access regional renovation grants.
- Carried out by
- an auditor certified by the Walloon Region
- Price (Energy PEB)
- €950 VAT incl.
- Visit duration
- 2 to 3 hours on site
- Outcome
- costed renovation scenario
- Access to grants
- audit mandatory before works
- Ideal for
- homes labelled E to G
What is a housing energy audit for?
Unlike the PEB certificate, which is a snapshot of a home's current performance, the housing energy audit is a decision-making tool. It answers a practical question: which works to carry out, in what order, at what cost, and for what energy gain?
The auditor visits the whole building, analyses the envelope (roof, walls, window frames, floors), the systems (heating, ventilation, hot water) and proposes a renovation scenario made up of consistent stages. Each item is costed and the target label is calculated, usually up to label A.
- Identify priority works and plan them in the right order.
- Avoid costly mistakes: a poorly sequenced investment can block a future intervention.
- Cost each item of work and estimate achievable savings.
- Access Walloon Region grants: the audit is the gateway to the support scheme.
The audit, a condition for accessing Walloon renovation grants
Wallonia has overhauled its support scheme for energy renovation. The new scheme, in force since 1 October 2026, is built around a single subsidised loan: the Rénopack (zero-interest loan with a reduction on the amount to be repaid for income categories C1 to C3) and the Rénoprêt (preferential-rate loan for category C4 incomes, landlords and co-ownerships).
Key condition: the audit must be carried out before the works. It is itself an eligible investment for financing, and it determines the priority works included in the file. For co-ownerships, a specific audit for apartment buildings is required for works in common areas.
- Rénopack: zero-interest loan with a 15 to 50% reduction on the amount to repay, depending on income.
- Rénoprêt: preferential-rate loan for higher incomes, landlords and co-ownerships.
- Up to €60,000 in financing per home for eligible works.
- The audit is an eligible investment: its cost can be included in the financing.
How does a housing energy audit work?
The visit lasts on average 2 to 3 hours. The auditor measures volumes, records the thickness and type of insulation, and inspects the roof, cellars, loft, window frames and heating system. You are also asked about your habits and plans (extension, boiler replacement, solar panels).
After the visit, the official software calculates the current performance and simulates renovation scenarios. You receive a full report: current state, step-by-step works scenario, estimated budget per item, expected savings and grants you may be eligible for.
Housing energy audit or PEB certificate: what is the difference?
The PEB certificate is a legal obligation linked to a sale or rental: it gives a label, without proposing any works. The housing energy audit is a strategic choice for an owner planning to renovate: it includes the current performance, but goes much further with a costed renovation plan. Once the works are done, a new PEB certificate confirms the label achieved.
| Criterion | PEB certificate | Housing energy audit |
|---|---|---|
| Purpose | Give a label (sale/rental) | Plan a renovation |
| Obligation | Mandatory for sale or rental | Required for renovation grants |
| Content | Current performance | Performance + costed works scenario |
| Price | €250 – 350 | €950 |
| Walloon grants | None | Audit eligible for financing |
Concrete example
Frequently asked questions
Is the housing energy audit mandatory in Wallonia?
No, not to sell or rent: only the PEB certificate is mandatory for that. However, the audit is required before works to access regional renovation grants (Rénopack, Rénoprêt).
How much does a housing energy audit cost in Wallonia?
At Energy PEB, the housing energy audit costs €950 VAT included. This audit is itself an eligible investment: its cost can be included in the financing of the Walloon renovation support scheme.
Who can carry out a housing energy audit?
Only an auditor certified by the Walloon Region (PAE certification). Energy PEB is a certified Housing Auditor under number PAE2-P2-00729.
How long does a housing energy audit take?
Allow 2 to 3 hours for the on-site visit, then around one to two weeks to receive the full report with the costed renovation scenario.
Who is the accredited housing auditor for Walloon Region grants?
An auditor accredited by the Walloon Region (PAE accreditation). Energy PEB is an accredited Housing Auditor (PAE2-P2-00729): the €950 VAT incl. audit unlocks the Walloon renovation grants, Rénopack and Rénoprêt, with a costed renovation scenario up to label A.
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