Energy Renovation: What Grants to Reduce Your Costs in Wallonia?
In Wallonia, energy renovation has become an essential lever to cope with rising energy costs while improving the performance of homes. Whether you are considering renovating your home to enhance its insulation, replace your heating system, or redo your roof, there is today a wide range of grants and financial aids provided by the Walloon government. These measures aim to encourage citizens to invest in sustainable and efficient renovation work.
The Public Service of Wallonia has set up a structured grants system tailored to household income categories and the nature of the work being undertaken.
The goal is twofold: to improve the energy performance of buildings while reducing the out-of-pocket expenses for homeowners. Starting in 2025, certain rules will evolve, including changes in the calculation of the base amount and the conditions for accessing some aids.
In this article, we guide you through the various grants available in Wallonia, the conditions for applying, the steps to follow (with or without an audit), and how to optimize your grant application. Whether you are in the middle of renovating your home or simply researching, discover everything you need to know to carry out work while maximizing the housing grants and support available from the Walloon region.
Why Renovate in Wallonia?
In Wallonia, renovating your home has become both an ecological and economic act. With rising energy prices and the climate emergency, improving the energy performance of your home is a priority. Wallonia strongly encourages citizens to start a renovation in their home, notably through housing grants and targeted incentives.
The Walloon government has strengthened its commitment in 2025 with a temporary support system for certain works. This system is in addition to the classic aids and aims to support strategic renovations: insulation, roofing, heating systems, etc. The objective is to make homes more efficient while reducing energy expenses.
Renovating your home in Wallonia is therefore both a collective need and an opportunity to benefit from concrete aids tailored to the household’s income category.
What Grants Are Available in Wallonia for 2025?
The grants system in Wallonia is structured around several aids: the housing grant, the renovation grant, the base grant, and housing aids.
In 2025, these measures cover a wide variety of renovation works, including insulation, roofing, heating, or sanitation.
Each grant has a base amount, which can be increased based on the household’s income category. Wallonia thus offers larger grants to modest households.
The work must be done according to precise standards and, in some cases, a housing audit is required. It is also possible to benefit from all grants under certain conditions.
The Walloon region provides a website from the SPW (Public Service of Wallonia) and online services to facilitate access to these aids.
Access Conditions: Who Can Benefit from the Grants?
To apply for grants in Wallonia, several conditions must be met. First, the aid is available to owner-occupiers or future buyers of a home located in Wallonia. The grant eligibility depends on your household’s taxable income, classified into different income categories.
Next, the nature of the work being undertaken is crucial: some require an audit, while others do not (no audit). A specific application form must be accurately completed.
It is essential not to start the work before submitting the grant application if you want to retain your right to receive aid. Moreover, certain grants, such as those for domestic hot water or heat pumps, require specific invoices and evidence.
Wallonia offers personalized aids for these projects based on your profile. Adhering to the conditions allows you to obtain the grants and sometimes even benefit from additional support from the Walloon Social Credit Society or the Housing Fund.
Eligible Works: Insulation, Roofing, Heating, and More
Works related to energy performance are a priority for obtaining a housing grant. Among them are:
- Insulation of walls, floors, and attics.
- Roofing and sealing works.
- Replacement or optimization of the heating system and domestic hot water production.
- Installation of a heat pump.
Sanitation works, such as ventilation or moisture treatment, are also eligible in some cases. Since February 14, 2025, the exact conditions depend on the Walloon government’s decree.
For each project, the thermal transmission coefficient must be respected, particularly for insulation work. These standards ensure that the improvements have a real impact on energy consumption.
Finally, certain small works can also be supported, as long as they are part of a global project.
Be aware that the works must be carried out according to the current standards to benefit from the full grant amount.
The Housing Audit: A Mandatory Step for Many Grants
In most cases, it is mandatory to conduct a prior audit, carried out by a certified housing auditor, who will assess the energy state of the home and determine the priority works.
The audit is often the condition to access several housing grants and certain financial aids. It establishes a comprehensive renovation plan, ranking interventions based on their energy efficiency. It also ensures that the renovation in Wallonia complies with current standards.
In some cases, particularly for small works or urgent interventions, this audit requirement can be bypassed (without audit), but this limits the granted amounts. The cost of the audit may also be partially reimbursed under the available aids.
A good audit ensures a well-directed grant application and maximizes your chances of receiving the grant. It is strongly advised to have it done at the beginning of the project, especially for any work undertaken after 2024.
How to Apply for a Grant in Wallonia?
To apply for the grant, you need to follow several specific steps. It all begins by consulting the SPW website, where the form and explanations according to the current grants system can be found.
It is essential to accurately complete the application form and attach all required supporting documents: quotes, photos, housing auditor certificates, etc.
Once the complete file is submitted, you can submit it to the region via the online services.
Be aware: the grant application must be made before starting the work, unless exceptions apply. Certain deadlines must be respected to ensure your right to the grant.
The amount of your grant will depend on your income, the nature of the work, and the standards followed. Wallonia can also refuse aid if the conditions are not met.
For full support, you can consult Walloon public service advisors or hire a private expert. This maximizes your chances of receiving the grant smoothly.
Amount, Payment, and Additional Support
The total amount of grants awarded in Wallonia depends on several factors:
- The base amount of the grant.
- The income category.
- Compliance with technical standards (such as the thermal transmission coefficient).
In addition to the base and an increase, some households may be eligible for extra support through the Walloon Social Credit Society, the Housing Fund, or a public housing company. These organizations support public housing and low-income homeowners. These aids will cover a large part of the costs associated with energy renovation, provided that the work meets the required standards.
With this system, Wallonia aims to accelerate the transition to more efficient homes while providing financial support to its citizens. All that remains is to prepare your file well and apply for the grants at the right time.
Take Action: Renovate Smartly and Benefit from Grants in Wallonia
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