Collective renovation in co-ownership rarely stumbles on a lack of will. It fails due to the sequence: poorly timed audit, voting in the general assembly on a vague scope, tenders launched without a solid technical specifications document.
The refocusing of MaPrimeRénov’ on large-scale renovations since 2026 exacerbates the problem, as projects developed “on the fly” no longer meet funding criteria. Structuring the project in advance becomes the financial survival condition of a collective energy renovation.
Technical sequencing of a renovation project in co-ownership
The point that public guides overlook is the operational order. A collective energy performance diagnosis (DPE) carried out without anticipating the multi-year work plan (PPT) produces a diagnosis disconnected from the financial decisions of the syndicate. We regularly observe co-ownerships that order an energy audit after already voting on a budget in the general assembly, which locks in global renovation scenarios even before the thermal analysis.
The logic to follow is a strict chain: collective DPE, then energy audit, then PPT, then vote in AG. Reversing two links is enough to render the project ineligible for aid or to cause additional project management costs. It is precisely on this sequencing that the renovimmopro.fr manual for co-ownership provides documented value, formalizing each step with the documents expected by the Anah and the energy gain thresholds to aim for.
A property manager presenting a renovation scenario without having set the level of gain (35% or 50%) on the initial collective DPE exposes the co-ownership to a funding refusal. The manual structures this articulation to avoid back-and-forth between the study office and the syndicate council.
MaPrimeRénov’ co-ownership funding window: why it is closing
The number of MaPrimeRénov’ applications submitted has massively decreased since the refocusing of the scheme. Co-ownerships that settle for isolated actions on common areas (replacement of collective boilers, partial insulation) gradually lose access to the “by action” pathway. Only large-scale renovations remain fully fundable, which requires documented energy gains through a compliant audit.
The reimbursement rates remain attractive on paper:
- 30% of the cost of work for an energy gain of 35%, with a ceiling of 25,000 euros per housing unit
- 45% for a gain of 50%, supplemented by a bonus of 10% in case of exiting the energy sieve status (label F or G to at least D)
- A bonus of 20% for fragile co-ownerships, conditioned on obtaining CEE from the Anah
These levels of aid make global renovation economically viable, but the administrative complexity of the scheme discourages late setups. Co-ownerships that have not yet initiated their collective DPE face a real risk of missing out on the scheme in its current form.
Energy audit and collective DPE: two distinct obligations not to be confused
The collective DPE, now mandatory for all co-ownerships equipped with a collective heating or cooling system, provides a snapshot of the building’s performance. It classifies the building but prescribes nothing. The energy audit, on the other hand, proposes quantified work scenarios with projected gains by technical lot (envelope, ventilation, heat production).
Confusing the two leads to frequent management errors. A syndicate council that considers the collective DPE sufficient to launch a tender finds itself without a technical basis to compare the companies’ proposals. The energy audit constitutes the true specifications document for the renovation, not the DPE.
The PPT, made mandatory by the Climate and Resilience law, normally relies on the audit to schedule the work over ten years. Without a prior audit, the PPT becomes an empty administrative document, validated in the general assembly without technical foundation. We recommend ordering the audit before drafting the PPT, even if the regulations do not formally impose this order.
Global renovation in co-ownership: structuring the vote in the general assembly
The vote in the general assembly remains the bottleneck. The required majority (Article 25 of the law of July 10, 1965 for improvement works) requires convincing co-owners with very different financial situations and holding horizons. A landlord considering selling in two years does not have the same perspective as an occupant planning to stay for fifteen years.
The presentation strategy in the general assembly makes the difference. Presenting a single scenario costing several hundred thousand euros polarizes the vote. Presenting two or three scenarios derived from the audit, with different energy gain levels and remaining costs after deducting MaPrimeRénov’ co-ownership and CEE, allows co-owners to vote on a trade-off rather than on a gross amount.
The role of the property manager is to prepare this presentation with the study office and the syndicate council, incorporating individual grants for co-owners with modest or very modest resources. These grants reduce the remaining costs in a targeted manner and can sway a tight vote.
What a structured manual changes in project management
Reliability of the documentary chain
A collective renovation project generates about twenty documents from the initial diagnosis to the acceptance of the work. Project management assistance mandate, audit contract, collective DPE report, PPT, minutes of the general assembly, aid application files, completion certificates. A missing or poorly referenced document is enough to block the payment of the grant.
Anticipating regulatory tightening
Budgetary decisions on MaPrimeRénov’ are tightening with each finance law. Co-ownerships that have a structured plan, backed by an audit and a coherent PPT, maintain an adaptability that projects put together in a hurry do not have. Formalizing the approach from the stage of the collective DPE secures the project against rule changes along the way.
Energy renovation in co-ownership remains an exercise in coordination between technical, legal, and financial constraints. The co-ownerships that cross the finish line are those that have locked in the sequence in advance, not those that had the largest budget.
