Energy audits, DPE and thermal studies
Ten complementary services to understand, calculate and improve the energy performance of your property, whether it is a house, an apartment building or business premises.
Regulatory audit for selling a property
Selling a property rated F or G now requires a regulatory energy audit. Neo Étude provides this service for owners selling property in Western France, producing a clear report usable by notaires, agents and buyers.
Learn more Initial auditEnergy audit for houses and apartments
The initial energy audit is the starting point for unlocking MaPrimeRénov' and the French éco-prêt. It applies to houses and apartments, in individual or collective housing, and provides the technical diagnosis that underpins renovation aid.
Learn more DPEIndividual property DPE (French energy performance certificate)
The DPE (diagnostic de performance énergétique) is the French energy performance certificate. It gives a dwelling an energy label and a climate label and is required when selling or letting.
Learn more Collective DPECollective DPE for French apartment buildings
The DPE collectif rates a whole apartment building rather than a single flat. It gives co-owners a shared view of performance and feeds directly into planning communal works.
Learn more CommercialCommercial property DPE for offices and shops in France
Offices, shops, practices and workshops run on different hours and equipment from homes. A commercial DPE reflects that, instead of treating the premises like a dwelling.
Learn more New buildRE2020 thermal study for new buildings in France
RE2020 is the French building regulation for new construction. It sets requirements on bioclimatic need (Bbio), primary energy use (Cep), summer comfort and embodied carbon, so the thermal study belongs at design stage.
Learn more HeatingHeating system sizing study for French homes
An oversized heat generator costs more to run, wears faster and heats less comfortably. Correct sizing comes from a heat-loss calculation, not from a rule of thumb per square metre.
Learn more Detailed studyRoom-by-room heat-loss calculation
A room-by-room calculation works out the heat loss of each space separately. That is the level of detail needed to size individual radiators or underfloor heating loops correctly.
Learn more ConsultancyEnergy renovation consultancy for property owners in France
Neo Étude is an independent thermal engineering consultancy: we sell no equipment and no building work. Our role is to help you decide, with calculations, what to do and in what order.
Learn moreRegions we cover
Contact us
Tell us about the building and what you need. We reply with a proposal suited to your situation — free of charge and with no obligation.