Whole projects
Energy renovation in Belgium
What the trade covers, what to check on a quote and a page for each of the 30 cities, with the pros registered in the area. Describe your project once, then compare the quotes you receive side by side.
- Free for homeowners
- No commission on the works
Trade sheet
- Trade
- Energy renovation
- Group
- Whole projects
- City pages
- 30
What this trade covers
This type of project brings several trades onto one site. The key question is coordination: who plans, who answers for delays, who invoices what.
What to check on the quote
Two quotes only compare when they cover the same thing. These points often separate a complete offer from one that ends in extras.
Detail by trade
Each trade has its own lines, with quantities and unit prices. A single total cannot be compared.
The schedule
Phases, planned lengths and payments tied to progress on site.
Insurance
Ask for the insurance certificates before you sign, and check what they cover for your project.
The company number
The quote shows the company's CBE number. Check it on the public search of the Crossroads Bank for Enterprises before you sign.
VAT, deposit and validity
The quote states the VAT rate applied, any deposit and how long the price is guaranteed.
VAT
In a private home more than ten years old, most works invoiced by the contractor go down to 6% VAT instead of 21%. The invoice must carry the statement required for the reduced rate.
Energy renovation: choose your city
Each city page shows the registered pros whose address is in the area, and the regional renovation support.
Brussels-Capital Region
Your town is not on the list?
Search by postcode and radiusFurther reading
Detailed prices, VAT, checks before you sign: our full guides.
Budget & financing
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Legislation & grants
PEB in Wallonia: read your label and move from E to C
7 min read
Legislation & grants
6% VAT in Belgium: conditions, invoice wording, pitfalls
9 min read
Legislation & grants
Vetting a tradesperson before you sign: the CBE checklist
4 min read
Frequently asked questions
Energy renovation: what budget should you plan in 2026?
The price depends on the job, the materials and the access. Describe your project and compare several written quotes: it is free for homeowners.
Do you need an architect?
Often, as soon as the structure or envelope of the building changes or a permit is required. The rules vary by region: check with your municipality.
Which VAT rate applies?
In a private home more than ten years old, most works invoiced by the contractor go down to 6% VAT instead of 21%. The invoice must carry the statement required for the reduced rate.
How do you check a contractor before signing?
Check their company number at the Crossroads Bank for Enterprises, ask for a detailed written quote with VAT, and read the reviews. On Batizzy, the "CBE verified" badge marks pros who had their number checked, and a review is only possible after a real job.
How do you get quotes you can compare?
Describe your project once on Batizzy, with a few photos. Pros see the jobs in their area first and send you their quote, which you compare side by side. It is free for homeowners, and Batizzy takes no commission on the works.
In the same group of works
A project coming up?
Describe it once, it is free. Pros from your area answer with a quote in the same format, and you decide what happens next.