Deadline5 years after purchase
Is your home EPC-rated E or F?
Since 01/01/2023 the Flemish government requires every buyer of a home with EPC label E or F to renovate it to label C (or better) within 5 years of purchase. Non-compliance = fine of €500 to €200,000.
Free on-site visit +32 15 62 70 80Calculate your deadline
When did you buy your home?
What does the law say? — Flemish EPC renovation obligation
In 3 points.
Who?
Anyone who bought (or inherited) a residential home with EPC label E or F since 01/01/2023.
When?
Within 5 years of the deed. Bought in 2023 → deadline 31/12/2027. 2024 → end 2028. 2025 → end 2029.
What if you don't comply?
Administrative fine of €500 to €200,000. The obligation sticks to the house on resale.
From label E to C — in one renovation project
The 4 pillars that together make the biggest difference.
Heat pump
1–2 label jumps
Replaces your gas or oil boiler with a sustainable system that uses up to 75% less energy. Subsidy up to €8,000.
Insulation
1 label jump
Roof, wall or floor — together with a heat pump the biggest lever for your EPC score. Subsidy up to €5,750.
New windows
0.5 label jump
High-efficiency glazing + insulated frames = less draught and less heat loss. Subsidy up to €5,250.
Ventilation
EPB-compliant
System D with heat recovery = healthy air without heat loss. Mandatory in renovation.
Which subsidies do you get in 2026?
Mijn VerbouwPremie — Flemish government — depending on your income.
| Work | Cat. 4 (modest) | Cat. 3 | Cat. 2 | Cat. 1 (higher income) |
|---|---|---|---|---|
| Air/water heat pump | €6.000 | €4.500 | €1.500 | Removed |
| Geothermal heat pump | €8.000 | €6.000 | €4.000 | Removed |
| Hybrid heat pump | €4.000 | €3.000 | €800 | |
| Heat-pump water heater | €1.200 | €1.050 | €450 | |
| Roof insulation | max €5.750 | max €4.025 | €16/m² | €8/m² |
| Wall insulation | max €5.000 | max €3.500 | 7,5–22,5 €/m² | 5–15 €/m² |
| Windows & glazing | max €5.250 | max €3.675 | €64/m² (max 20m²) | €30/m² (max 20m²) |
Case study: Family V. from Grimbergen
From EPC label E to C in 7 weeks.
Situation
Family of 4, home built 1978, bought June 2023 for €385,000 — EPC label E (368 kWh/m²). Renovation deadline: 31/12/2027.
Approach
- Replace oil boiler with air/water heat pump (Buderus)
- Attic floor insulation 22 cm PUR
- Ventilation system D with heat recovery
Result
"Ecowatt NV took everything off our hands — quotes, subsidy applications, site coordination. Everything done in 7 weeks." — V.
Why choose Ecowatt NV?
Buderus System Partner
Extended warranty on your Buderus installation available as a paid option, on request.
3 locations
Vilvoorde (HQ) + warehouse in Eppegem + office & warehouse in Evere — fast on site.
30+ years of experience
RESCert certified technicians, trained on every system.
Subsidy tools & support
Calculator, regional overview, clear criteria — we guide you through.
Active throughout the Brussels — Mechelen — Leuven triangle, with priority service in Vilvoorde, Zaventem, Grimbergen, Mechelen, Zemst, Kortenberg, Leuven and all 19 Brussels municipalities.
Frequently asked questions
Free on-site visit + renovation plan
On site within 7 days. Meeting your deadline without stress.
- EPC simulation for your home
- Optimal renovation pack: heat pump + insulation + ventilation
- Exact subsidy calculation
- Timing plan fitted to your 5-year deadline
Information updated: April 2026 · EPC renovation obligation: Flemish Housing Code decree · Subsidies: Mijn VerbouwPremie 2026.