Do you think an individual assessment is enough to evaluate the energy performance of a Paris apartment? Think again. Since 1 January 2026, the 2026 co-ownership building energy assessment has become a requirement for all co-owned buildings, regardless of size. At APPARTE, we help buyers interpret these technical documents, which are now essential to protecting your future finances.
The 2026 Co-Ownership Building Energy Assessment: Why It Matters When Buying
A building-wide energy assessment is more than an administrative formality. It provides an overall view of the building’s energy performance, including heat loss in common areas and from shared equipment. In 2026, the requirement now also applies to co-owned buildings with fewer than 50 units, completing the regulatory timetable introduced by the Climate and Resilience Law.
For a buyer, this document is invaluable. It tells you whether the building is an energy-inefficient property or has already started its transition. If you are buying an apartment, be sure to request the assessment from the property manager or seller before signing. A poor building-wide energy rating is often an early warning of major works ahead and special assessments.
The Multi-Year Works Plan (PPT): Your Financial Roadmap
If the building-wide energy assessment identifies the situation, the Multi-Year Works Plan (PPT) proposes a solution. Now required for co-owned buildings over 15 years old, this document sets out a schedule of works over ten years. Its purpose is to safeguard the building, maintain equipment and improve energy performance.
During viewings, look beyond the interior decor. Ask to see the PPT. It will show you:
- The list of necessary work (façade renovation, roofing, insulation, heating system).
- The proposed schedule for carrying out the work.
- Estimated costs for each type of work.
This is where you can assess whether co-ownership charges are likely to soar in the coming years. A detailed PPT is a sign of good management, while an empty or missing plan may conceal urgent, costly work that has not been budgeted for.
How to Read These Documents and Avoid Pitfalls
At APPARTE, we know how to read co-ownership documents. To avoid mistakes, check whether the building-wide energy assessment and the PPT are consistent. If the energy assessment gives the building a poor rating but the PPT includes no energy renovation, you may face a significant financial risk.
Compare this information with the general meeting minutes from the last three years. They often reveal whether works have already been approved or discussions about energy renovation are underway. For more information, read our guide to energy-inefficient homes for Paris buyers.
The Works Fund and Future Charges
The law requires co-owned buildings to establish a works fund. The fund amount is directly linked to the recommendations in the PPT. In 2026, a co-ownership that plans ahead with a solid PPT can spread special assessments more evenly over time. Conversely, a co-ownership with no plan may suddenly call for large payments at a general meeting, which could throw your personal budget off balance.
FAQ: Your Questions About Building-Wide Energy Assessments and the PPT
Does the seller have to provide the building-wide energy assessment and PPT?
Yes. These documents must be provided as part of the sale. If the property manager has not produced them yet, this may be a warning sign about how the co-ownership is managed.
What happens if the PPT has not been prepared in 2026?
The property manager is legally required to put the preparation of a PPT to a vote. Without a PPT, the building may deteriorate and co-owners may find it harder to sell, as buyers are becoming increasingly vigilant.
Does the building-wide energy assessment replace the individual DPE?
No, they complement each other. The building-wide assessment evaluates the entire building, while the individual DPE focuses on your specific apartment. You need both for a complete picture of your future energy use.
Buying in Paris requires detailed expertise to navigate both regulatory requirements and real-world conditions. Don’t let the 2026 co-ownership building energy assessment stand in the way of your plans. To protect your purchase with guidance from experts who represent only your interests, book an appointment with APPARTE today.
