From the start of 2026, no co-ownership will escape the obligation to draw up a multi-year works plan. This deadline, long anticipated by property professionals, now applies to all co-ownership buildings over fifteen years old, regardless of their size.
The multi-year works plan, introduced by Law No. 2021-1104 of 22 August 2021 on combating climate change and strengthening resilience to its effects, known as the Climate and Resilience Law, has been implemented progressively. After initially applying to co-ownerships with more than two hundred units from 2023, then those with fifty to two hundred units in 2024, it has been mandatory for all co-ownerships where the building was constructed more than fifteen years ago since 1 January 2026, in accordance with Article 14-2 of the Law of 10 July 1965 establishing the co-ownership regime for built properties.
In concrete terms, the PPT is a strategic document drawn up over a ten-year period. It is based on a technical analysis of the building and lists all the work necessary for the conservation of the property, the preservation of the health and safety of the occupants, as well as the improvement of its energy performance. The document must include a financial estimate of the identified works, a schedule for their completion, and a prioritisation according to their degree of urgency. It is based, in particular, on the collective energy performance diagnosis, which has also become mandatory for all co-ownerships since 1 January 2026.
The joint owner's agent plays a central role in implementing this obligation. It is their responsibility to include the development or updating of the PPT on the agenda for the general meeting, to submit the draft for the joint owners to vote on, and to ensure that the decisions adopted are carried out. Failure to comply with these obligations may lead to the agent's professional liability being called into question.
For co-owners, the impact is just as significant. The PPT now makes the creation of the mandatory works fund conditional, with the annual amount not being less than 2.5 % of the estimated amount of works planned in the plan. Furthermore, when any co-owned lot is sold, the PPT must be communicated to the buyer, along with the other mandatory documents provided for by law. Its absence could constitute a breach of the pre-contractual information obligation.
In practice, co-ownerships that have not yet undertaken this process are in an irregular situation. It is strongly recommended that co-ownership associations mandate a qualified professional, such as a certified surveyor or architect, without delay to produce this document. The cost of this operation, which varies depending on the size and complexity of the building, represents an essential investment for both legal compliance and the preservation of the property's asset value.
This reform is part of a broader movement to hold co-ownerships accountable for the challenges of energy renovation, in a context where the progressive ban on renting out the most energy-intensive properties, rated G from 2025 and F from 2028, reinforces the urgency of rigorous planning for works.