Why choose Avenir Renovations?
Our energy renovation services in Brussels
We offer a comprehensive, centralized, and customized approach for all your work aimed at improving the energy performance of your home, whether in a house or an apartment.
Thermal insulation
We carry out all types of insulation work:
- attic insulation by blowing or rolls,
- wall insulation from the inside (ITI) or outside (ITE),
- floor insulation, basements, or crawl spaces.
The materials used (rock wool, PUR, insulating panels, cellulose, etc.) are chosen based on your building, your budget, and the technical criteria of the Renolution grants.
Replacement of joinery
We replace your old windows and exterior doors with high-performance models eligible for regional assistance:
- PVC, wood, or aluminum frames,
- double or triple glazing (Ug ≤ 1.1 W/m²K),
- thresholds without thermal bridges, integrated ventilation systems.
Heating and ventilation
A good heating system and effective ventilation complement the performance of the housing:
- gas condensing boilers,
- heat pumps (air-water, hybrid),
- single or double flow VMC.
We advise you on the most cost-effective options considering the type of building, your consumption, and your budget.
Housing audit and overall coordination
We can guide you to a certified housing auditor to unlock the highest grants (category 2 and 3). We take care of:
- coordination of trades,
- compliance with audit recommendations,
- management of scheduling and administrative follow-up.
The 5 steps of an energy renovation project with Avenir Rénovations
Avenir Rénovations supports your energy renovation in Brussels: free evaluation, audit, quote, coordination of work, qualified execution, and assistance with grant applications.
Why are Brussels residents investing in energy renovation?
Brussels residents renovate for increased comfort, energy savings, enhanced property value, and to anticipate future energy performance obligations, all while benefiting from regional aids.
A well-insulated house retains heat in winter, stays cooler in summer, and limits drafts. Energy renovation improves daily living comfort.
Reducing heating consumption by 30 to 50% is possible with smart renovation. The return on investment is often quick, especially with regional aids.
A good energy performance score has become an increasingly scrutinized criterion by buyers. A well-executed energy renovation increases the value of your property and reduces the time to sell.
The Brussels Region plans a PEB quota system in the coming years. Anticipating now allows you to renovate at your own pace while benefiting from substantial assistance.
How much does an energy renovation cost in Brussels?
Examples of indicative prices (VAT included)
- Insulation of lost attics (100 m²): 2,500 to 4,500 €
- Insulation of exterior walls (100 m²): 8,000 to 12,000 €
- Replacement of 10 double-glazed windows: 5,000 to 10,000 €
- Installation of an air-water heat pump: 8,000 to 15,000 €
- Installation of a dual-flow ventilation system: 3,500 to 6,000 €
Renolution grants: major support
- Up to 70% of your bills reimbursed depending on your income
- Housing audit required for the highest amounts
- Rates by income category (R1, R2, R3)
- Grants can be combined if multiple renovation items are addressed
For example, for the insulation of exterior walls, you can receive:
- up to 200 €/m² (category R1)
- 100 €/m² (category R2)
- 50 €/m² (category R3)
We support you at every step to maximize the aids.
Why call on Avenir Rénovations for your energy renovation in Brussels?
In Brussels, successfully completing an energy renovation requires a good knowledge of regional aids, PEB standards, and the existing building. Avenir Rénovations provides you with:
- a turnkey support,
- specialized and certified craftsmen,
- complete management of the grant file (invoices, technical sheets...),
- prioritization of work based on return on investment,
- a project managed from A to Z by a single contact person.
We operate in all municipalities of Brussels (Ixelles, Schaerbeek, Uccle, Anderlecht, etc.) and adapt our interventions to local technical or heritage constraints.
Concrete example of energy renovation in Brussels
Mrs. Lefebvre, owner of a terraced house in Etterbeek, wanted to improve her winter comfort while reducing her bills. After conducting a housing audit, several recommendations were made:
- insulation of exterior walls (ITE) over 120 m²,
- replacement of 8 wooden frames with PVC models with triple glazing,
- installation of a hybrid heat pump.
Total cost of the work: 38,000 €
Income category: R2
Total amount of grants obtained: 17,250 €
Real cost: 20,750 €
Thanks to this intervention, the house gained two letters on its PEB certificate, and gas bills decreased by nearly 35% from the first winter.
What you need to know before starting an energy renovation in Brussels
Is the housing audit mandatory?
Yes, to access the highest grants (categories 2 and 3). It must be conducted before the work, by an approved auditor. For some basic grants (e.g.: glazing), the audit is not essential.
Can I freely choose my work items?
The housing audit defines a priority order that you must follow for each grant to be awarded. It is possible to stagger the work over several months or years.
What is the timeframe for obtaining grants?
After submitting your complete file, it takes 3 to 6 months for the grant payment. The processing depends on the regional administration but can be expedited if the file is complete.
Do I have to go through an approved company?
Yes, the work must be carried out by a company registered with the BCE (Crossroads Bank for Enterprises) and complying with the technical standards of the Region. Avenir Rénovations meets these conditions.
Renovate smartly, gain comfort and value
With Avenir Rénovations, you are in good hands for your energy renovation work in Brussels. Audit, choice of materials, site coordination, grants: we take care of everything to guarantee you a sustainable, comfortable, and profitable result.
Request your free quote for an energy renovation in Brussels today.
Agency Avenir
Rénovations
for Energy renovation work in Brussels: gain comfort, save sustainably
An expert to take charge of your renovation projects and guarantee deadlines, budgets and quality of all services.




