A craftsman recommended by a neighbor, a quickly signed quote, work that starts right away. Everything seems to be going well, until the day the site stops without explanation, the final bill exceeds the expected amount, or worse, a defect appears six months after the work is completed. Securing your renovation work begins well before the first blow of the hammer, and legal guarantees only protect those who activate them correctly.
Extended ten-year guarantee for energy performance: what your guarantee really covers in 2025
The ten-year guarantee has long been seen as a protection limited to the building’s solidity: structural cracks, roof collapses, major infiltrations. This view is now incomplete.
Since 2024-2025, according to Bazy Avocats, the ten-year guarantee also covers defects in energy performance that render a building unfit for its intended use. A renovated home aimed at high performance that does not meet the promised thresholds can now fall under this guarantee.
The extension does not stop there. Following an opinion from the Council of State on September 28, 2024, home automation installations and connected systems integrated into the building are now included in the scope of the ten-year guarantee. Specifically, if you have a heat pump installed that is controlled by a connected system and it fails structurally, the coverage can apply for ten years.
This evolution also concerns modular constructions, 3D printed buildings, and bio-sourced materials. Before signing a quote for heavy renovation, it becomes relevant to secure your work with Batiav by checking that the craftsman has a ten-year guarantee covering these new scopes.
Checking the work quote: items that hide extra costs
Have you ever compared two quotes for the same service and noticed an incomprehensible gap? According to market data reported by competitors in the sector, the difference between quotes for identical work can reach 25 to 40%. This gap is not always explained by the quality of materials.
Three areas of the quote deserve special attention:
- The “site preparation” and “final site cleaning” items: often billed at a flat rate, they can represent a disproportionate amount compared to the actual volume of work.
- Supplies listed without specific reference: a “ceramic tile” without brand or format leaves the door open to a low-quality material billed at a high price.
- The “unexpected” or “site contingencies” automatically included in the quote: a provision line is not unusual, but it should be capped and conditioned on documented findings.
A reliable quote details each item with measurable quantities (square meters, linear meters, units), identifiable product references, and a unit price distinct from the total price. Any quote that generalizes without detailing exposes you to overbilling.
RGE reform of June 2026: financial health and claims rates become criteria
The RGE label (Recognized Guarantor of the Environment) has long been criticized for its controls deemed insufficient. The reform of June 23, 2026, fundamentally changes the situation.
According to Kohen Avocats, qualifying organizations now incorporate the financial health of the company and its claims rate into the criteria for awarding and renewing the label. A company in financial difficulty or whose projects generate an abnormal number of disputes may have its qualification revoked.
Why does this change matter for an individual? Because a financially troubled RGE craftsman presents a concrete risk of abandoning the project. Direct deposits made without an escrow mechanism can then be lost.
Check the solidity of a craftsman before signing
Beyond the simple SIRET number, a few accessible checks can help reduce the risk:
- Consult the company’s accounts on platforms like Pappers to detect any potential financial difficulties.
- Request a valid ten-year insurance certificate, not a document from the previous year.
- Verify that the RGE qualification is active and corresponds to the type of work planned (the label is specific by category of work, not generic).
- Look for customer reviews from multiple sources, prioritizing platforms with purchase verification.
A serious craftsman will not be offended by these requests. Those who evade them send a warning signal.
Site monitoring and staggered payments: protecting each step of the renovation
Paying in full or nearly full before the work is completed remains one of the most costly mistakes. A payment schedule linked to validated stages protects both parties.
The principle is simple: the total amount is divided into installments corresponding to identifiable phases of the project (demolition completed, structural work finished, secondary work installed, finishes delivered). Each installment is only released after contradictory validation of the step, ideally with time-stamped photos.
Some platforms offer an escrow mechanism where funds remain blocked with a third party until the step is validated. This system eliminates the main risk: paying a substantial deposit to a craftsman who disappears before finishing.
Acceptance of work: the moment your guarantees begin
Acceptance is not an administrative formality. It is the act that officially triggers the one-year guarantee of perfect completion, the two-year guarantee of proper functioning, and the ten-year guarantee.
During acceptance, you inspect each room and each installation. Any defect found must be recorded in writing in an acceptance report with reservations. Without a report, activating legal guarantees is difficult.
A often-overlooked detail: acceptance can be tacit. If you occupy the premises and pay the balance without formalizing acceptance, a court may consider that you have accepted the work as is. It is always better to demand a document signed by both parties, even for a modest project.
The protection of a renovation project rests on three verifiable pillars: a detailed quote with identifiable references, a craftsman whose guarantees and financial solidity are checked, and staggered payments conditioned on the validation of each phase. The acceptance report remains the key that locks the system and opens the door to legal guarantees.