Energy renovation in co-ownership: where to start?

Eric Bardoul, co-owner of Esplanade Residences in Montpellier and union council member, can finally breathe a sigh of relief. The insulation work is done from outside Construction of 192 housing units is in progress. “To get there, you have to have a lot of energy, know how to persuade, and move in stages”, he summarizes. The work, which will cost 3.8 million euros, including 1.6 million in aid, should be completed at the end of the year.

A success that we must not forget that energy renewal in co-ownership is complex and few buildings are really just starting. According to the National Housing Agency (ANAH), 51,559 housing units were renovated in 2022 8.4 million According to Ecology Ministry data, co-ownership counts. However, three quarters of the buildings were built before 1973, the date of the first regulations on insulation.

The first reason: Decisions are taken at a general meeting, which is held only once a year, and provided that a majority of co-owners are persuaded to vote for the action. It may take three years for construction to begin. In the case of the Esplanade, the building had been under consideration for renovation for ten years. It was this support and the fear that it would be less important in the future that ultimately led to the decision to start this Montpellier co-ownership.

Cost of work is also a major hurdle. “Not everyone has the same means, co-ownership brings together very different profiles”Alexis Lagarde, vice president of the National Union of Real Estate Owners, recalls.

proceed in stages

To move forward, it is better to plan several steps and this is what the law provides for. from 1er January 2024, all co-owners of more than fifty lots must develop a multi-year action plan (PPT) that lists the necessary interventions within a ten-year period. This document contains an important section related to energy renewables.

To develop this plan, it is necessary to start from a collective energy performance diagnosis (DPE), or a more complete global technical diagnosis (DTG), developed at the building level. So for many co-owners, 2024 will be dedicated to voting on the design office estimate for this DPE or this DTG. It is only in 2025 or 2026 that the PPT will actually be voted on and works selected for the projects, which will usually start in 2027.

It’s hard to skip these steps for legal reasons, “But also because the co-owners need to mature their project”, explains Thomas Bohn, collective housing renovation specialist at Helio. To move forward, it is also best to have full support from a professional, known as a “project management assistant” (AMO). It is also essential to obtain co-ownership assistance. It is he who studies and develops working scenarios.

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