Why choose Avenir Renovations?
Why raise your house?
Homeowners who choose a storey addition seek to gain living space without expanding the footprint, but by raising the roof. This home extension strategy is suitable for many houses.
A lot too narrow for a lateral extension
Terraced houses or those located in dense areas generally cannot extend sideways. The only option is to build upwards.
A need for additional space without moving
Add a floor to accommodate a master suite, children's rooms, an office, or an independent space, while keeping your property and your lifestyle.
A solution compatible with urban planning regulations
In certain municipalities, the zoning plan allows for the construction of an additional floor, subject to height, setback, and aesthetic integration conditions. Avenir Rénovations guides you through these urban planning constraints.
A significant real estate value increase
Creating an additional floor significantly increases the living space (but also indirectly its energy performance), thus increasing the resale value of your home, especially in the city.
What solutions does Avenir Rénovations offer for a storey addition?
We adapt our proposals based on the existing structure, technical constraints, regional and local urban planning rules, and your aesthetic preferences.
The technical and aesthetic advantages of a storey addition
A storey addition allows for expanding a dwelling without encroaching on the land while improving the insulation and structure of the building. It also provides an opportunity to modernize the aesthetic of the house and add value to the property.
We check the strength of the foundations, the quality of the load-bearing walls and carry out all necessary reinforcements to ensure the stability of the new floor.
The materials used provide thermal and acoustic comfort that meets Belgian standards (PEB, ventilation, waterproofing).
We adapt the new roof to the style of your house, whether you want to preserve authenticity or opt for a bold modernity.
More space, a modern configuration, energy improvement: your house increases in value as soon as the work is completed.
What is the cost of a storey addition in Belgium?
The price depends on the type of house, chosen materials, technical complexity, and finishes. Here are indicative price ranges:
| Type of storey addition | Average price per m² including tax |
| Complete masonry storey addition | 2,000 to 2,500 € |
| Wood frame storey addition | 1,800 to 2,300 € |
The quote includes: structural study, architect plans, planning permission, major works, insulation, roofing, carpentry, finishes.
Why choose Avenir Rénovations?
- A network of local agencies and experienced craftsmen
- Proven expertise in complex structural projects
- Complete coordination with a single point of contact
- Technical solutions tailored to each situation
- Strong guarantees, including the ten-year guarantee
- Partner architects for plans and planning procedures
FAQ: adding a storey to your house in Belgium
Is a planning permit required for a storey addition?
Yes, systematically. In Belgium, a storey addition modifies the volume, roof, and height of the building. A planning permit is therefore mandatory. This involves working with a licensed architect who will prepare the plans and supporting documents to be attached to the application. The processing time varies by region (Wallonia, Flanders, or Brussels), but generally, it takes between 30 and 90 days. At Avenir Rénovations, we handle the planning analysis, coordination with the architect, and complete follow-up of the file until validation. We also anticipate any specific requests from the municipality: compliance with the building code, type of materials, roof slope, placement relative to neighbors. Thanks to our local experience, you save time and minimize the risk of administrative rejection.
Can we stay in the house during the works?
This depends on the nature of the storey addition. If the work is done with a wooden frame, on a structure prepared for this purpose, it is sometimes possible to continue occupying part of the house during the renovation. However, for a complete masonry storey addition, the roof is entirely removed, and the project impacts the structure of the building. In this case, temporary relocation is recommended for safety, comfort, and speed of execution. Avenir Rénovations supports you from the beginning of the project to anticipate this phase: duration, optimal period, potential cost of temporary housing. Our rigorous planning minimizes disruption and delivers your new floor in the best possible time, with impeccable execution quality.
What impact on resale value?
An additional floor significantly increases the value of a property. By adding 30 to 60 m² of living space, you often move into a new category of properties on the real estate market. In Brussels or in large Walloon cities, this represents up to 25% added value, especially if the storey addition includes sought-after rooms such as a master suite, an office, or an additional bathroom. Moreover, by taking advantage of the storey addition to improve insulation or replace windows, you also enhance the energy performance score, which has become a decisive criterion for buyers. Finally, your property stands out in listings: more spacious, modernized, ready to live in. It is a strategic investment for immediate comfort and future profitability.
Let's talk about your project
Do you dream of an extra floor? A project that combines comfort, value, and elegance? Contact Avenir Rénovations for a free consultation and discover how to elevate your home, with complete peace of mind, with Belgian experts by your side.
