Renovation cost benchmarks — ADEME 2025

ADEME 2025-2026 RENOVATION COST BENCHMARKS (labour + materials, before subsidies): - External wall insulation (ITE): 100–180 €/m² wall area - Internal wall insulation (ITI): 40–90 €/m² wall area - Roof / attic insulation (loose fill): 20–60 €/m² floor area - External roof insulation: 100–250 €/m² roof area - Floor insulation: 30–50 €/m² - Double glazing (windows): 500–1,200 €/window installed - Triple glazing: 700–1,500 €/window installed - Air-source heat pump (air/water): 8,000–15,000 € installed - Ground-source heat pump: 15,000–25,000 € installed - Condensing gas boiler: 3,000–7,000 € installed - Wood pellet boiler: 10,000–20,000 € installed - Heat recovery ventilation (VMC double flux): 4,000–8,000 € installed - Humidity-sensitive ventilation (VMC hygro B): 700–1,500 € installed - Solar water heater (CESI): 4,000–7,000 € - Thermodynamic water heater: 2,500–4,500 € - Photovoltaic panels (3 kWc): 7,000–12,000 € NOTE: Indicative prices only. Regional variation ±30%. Always get 3 RGE contractor quotes for accurate pricing.