Service
Improve my energy rating
Assess and improve your home's energy performance.
The energy performance certificate (DPE) rates your home from A to G based on its energy use. Improving your rating means gaining comfort, cutting your bills and moving a poorly insulated property out of the lowest energy grades. Co'Building helps you assess your home and identify the priority work.
Service
Improve my energy rating
Assess your home's energy performance
Our simulator relies on kelvin, software that generates energy performance studies for renovation work tailored to each home. Enter your address and discover how to optimise your energy renovation: the simulator guides you step by step towards the most effective actions.
What work improves your energy rating?
The priority levers are insulation (walls, loft, floors), replacing single-glazed windows, and upgrading the heating and hot water systems. Effective ventilation completes the picture. Properly prioritised, this work can move a home up several energy grades.
Grants and support
Improving your energy rating opens the door to many grants: MaPrimeRénov', energy-saving certificates (CEE), the éco-PTZ interest-free loan. Co'Building supports you from the energy study through to the completion of the work, with certified companies, for a smooth energy renovation journey.
GoKelvin tool · free
Assess the energyperformance of your home
In a few questions, estimate your energy rating, then discover the work to consider and its budget to improve it.
- › Estimate of your energy rating (DPE)
- › Renovation scenarios and their budgets
- › Free, in 2 minutes, no commitment
A few questions about your home, and its energy rating estimated on the spot.
Ready to improve your home's energy rating?
Tell us about your project: we'll estimate it for free and put you in touch with our certified partner companies.