ROI of Green Renovation in Belgium

Green renovation: an investment, not an expense

With renovation obligations in Flanders, the Renolution plan in Brussels and rising energy prices, energy renovation has become a financial as well as ecological calculation. Data shows that well-rated properties (EPC A, B, C) sell 10 to 20% higher than equivalent energy-inefficient ones.

Renovation ranking by ROI

1. Roof insulation : ROI: 15 to 25% per year

Roof insulation is by far the best energy investment. An uninsulated roof represents 25 to 30% of heat loss.

• Cost: 3,000 to 8,000 EUR
• Annual savings: 800 to 1,500 EUR
• Subsidies: up to 4,000-6,000 EUR depending on region
• Payback: 2 to 5 years (after subsidies)

2. Heat pump : ROI: 8 to 15% per year

• Cost: 8,000 to 18,000 EUR
• Annual savings: 1,000 to 2,500 EUR
• Subsidies: up to 5,000-8,000 EUR
• Payback: 4 to 8 years

3. Solar panels : ROI: 8 to 12% per year

• Cost: 5,000 to 10,000 EUR (4-6 kWp)
• Annual savings: 600 to 1,200 EUR
• Payback: 5 to 8 years

4. Wall insulation : ROI: 6 to 10% per year

• Cost: 8,000 to 20,000 EUR
• Annual savings: 500 to 1,500 EUR
• Payback: 6 to 12 years

5. Window replacement : ROI: 3 to 6% per year

• Cost: 10,000 to 25,000 EUR
• Annual savings: 300 to 800 EUR
• Payback: 10 to 20 years

Impact on property value

• EPC G to EPC D: +8 to 12% value increase
• EPC D to EPC B: +5 to 10% additional
• EPC B to EPC A: +3 to 5% additional

Use our Eco-Score simulator to calculate your case.

Optimal renovation strategy

1. Start with the roof: best ROI
2. Replace heating: heat pump if minimum EPC D after insulation
3. Insulate walls
4. Solar panels: install after insulation
5. Windows last

Check our complete renovation guide and current legislation.

FAQ

Which renovation offers the best ROI?

Roof insulation offers the best ROI (15-25% annually after subsidies), followed by heat pump (8-15%) and solar panels (8-12%).

Can subsidies be combined?

Yes, in all three regions you can combine subsidies for different work types. In Flanders, the EPC Label Premium is added on top when you achieve label A or B.

Does energy renovation really increase property value?

Yes. Belgian market data shows a 8 to 20% value increase for an EPC G to EPC B upgrade.