Are you wondering whether visible or hidden defects discovered after purchasing or building your property can be covered easily? Are you concerned about who pays and how to act if poor workmanship threatens the structural integrity or normal use of your future home?
The ten-year liability guarantee and structural damage insurance lie at the heart of protection for property owners and buyers; this guide explains their differences, how they work, and the steps required to activate them. Ten-year liability insurance, sometimes referred to as decennial civil liability insurance, engages the responsibility of builders; structural damage insurance enables rapid compensation.
This practical guide details the necessary procedures, documents to check (ten-year insurance certificate, handover report), and specific cases. To secure your real estate project, contact your local Capifrance real estate advisor.
Understanding the ten-year liability guarantee and structural damage insurance
The ten-year liability guarantee and structural damage insurance pursue two different but complementary objectives. The ten-year guarantee is straightforward: it is a mandatory civil liability insurance for builders. It is based on Article 1792 of the French Civil Code and on the so-called Spinetta Law. The ten-year liability guarantee covers, for ten years from the acceptance of the works, damage that compromises the structural integrity of the building or renders it unfit for its intended purpose.
Ten-year civil liability applies to professionals contractually linked to the project owner through a contract, quotation, or agreement. In practice, the injured party notifies the builder, who is presumed liable. The builder’s insurer compensates or organizes repairs if the guarantee is recognized. Structural damage insurance is taken out by the project owner before construction begins. It quickly finances repairs without waiting for a liability decision and facilitates restoration of the property.
Definition of the ten-year civil liability guarantee: operation and legal basis
The ten-year liability guarantee stems from Article 1792 of the French Civil Code. It applies in three main situations: damage affecting structural integrity, unfitness for intended purpose, or risks to occupant safety. The duration is ten years from the official acceptance report of the works. Acceptance marks the starting point of the limitation period. The builder’s liability is strict; the insurer is then responsible for compensation or repairs.
Important case-law concepts exist, such as future damage. Proof that the damage occurred within the liability period is essential. If the ten-year guarantee does not apply, the injured party may pursue contractual liability.
Structural damage insurance: an essential complement for the project owner
Structural damage insurance guarantees rapid pre-financing of repairs. The project owner pays the premium before construction starts. In the event of damage, the loss is reported to the insurer. The insurer investigates the claim and may provide advances or compensation to begin repairs without delay. This insurance is particularly useful for buyers of new-build properties, as it secures the cash flow needed for repairs.
Keep the certificate and insurer’s contact details. In the event of a sale, these documents must be handed over to the buyer. The combination of structural damage insurance and the ten-year liability guarantee provides comprehensive legal and financial protection.
Ten-year insurance: types, insurance certificate, and how to take out coverage
The construction sector relies on several complementary guarantees. The perfect completion guarantee covers the first year. The two-year (biennial) guarantee covers removable elements for two years. The ten-year guarantee covers, for ten years, damage affecting inseparable structural components of the building. Understanding these distinctions helps direct claims to the appropriate regime.
For each professional, the ten-year insurance certificate proves the existence of coverage. This certificate must be provided to the project owner before construction begins. Taking out insurance involves completing a questionnaire, risk assessment, and payment of a premium. Policies are offered by insurers as well as specialized brokers.
Construction guarantees: ten-year, biennial, and perfect completion guarantees
The perfect completion guarantee requires the builder to repair all defects reported during the first year. The biennial guarantee applies to removable elements such as taps or radiators. The ten-year guarantee applies to structural works: foundations, load-bearing walls, framework, floors, and components made inseparable from the structure. For example, cracked tiles shortly after delivery may fall under the biennial guarantee, whereas a structural crack falls under the ten-year guarantee.
In case of uncertainty, an expert assessment helps classify the defect. Document everything: photos, correspondence, invoices, and acceptance reports. These documents are useful for insurance purposes and potential legal proceedings.
Ten-year insurance for self-employed contractors and craftsmen: obtaining and verifying coverage
Self-employed contractors must also take out appropriate ten-year insurance. Craftsman insurance demonstrates the ability to work on construction sites. To obtain coverage, the contractor completes a questionnaire. Pricing depends on the trade, turnover, and type of work. Ten-year insurance can be purchased online, but guarantees and exclusions should always be checked carefully.
For buyers, always request the ten-year insurance certificate and verify its validity for the relevant dates. If in doubt, consult a ten-year insurance broker to compare offers and obtain a tailored quote.
Scope of application: construction, roofing, plumbing, and joinery
The scope of the ten-year construction guarantee mainly covers structural works. It protects the building’s structural integrity and normal use. Covered elements include foundations, structure, framework, and load-bearing floors. Roofing may also fall under the ten-year guarantee if defects compromise waterproofing and usability.
Inseparable equipment may be covered. However, elements installed on existing structures may fall under contractual liability. Recent case law has clarified these boundaries, particularly for certain heat pumps.
Parts covered by the ten-year guarantee: structural integrity and inseparable components
Structural integrity is the core concept. Covered elements include foundations, load-bearing walls, floors, and framework. Inseparable components, such as certain structural finishes, are also covered. For items such as tiling, classification depends on the cause and extent of the defect. Ten-year coverage for tiling applies rarely, unless the defect compromises the building’s use.
Joinery and windows often fall under other regimes. For example, ten-year coverage for windows applies only if failure renders the dwelling unfit for its intended purpose; otherwise, repairs may fall under the biennial guarantee or the manufacturer’s commercial warranty.
Specific cases: new-build property, life annuity, secondary works, commercial premises, and swimming pools
In new-build property, the presence of ten-year insurance and structural damage insurance is standard.
For renovated older properties, identify the acceptance date of recent works and the insurance policies taken out.
In life annuity sales or prestige property, documents must be carefully checked to avoid costly post-sale disputes.
Commercial and industrial premises are also subject to ten-year liability. Developers and design offices may incur liability depending on contracts.
For swimming pool ten-year guarantees, coverage depends on the defect’s impact on the structure. Rental investors must require insurance certificates to secure their assets.
Activating the ten-year guarantee: formal notice, claim declaration, and remedies
The procedure begins with identifying and documenting the defect. Photos, correspondence, and official findings preserve evidence. Send a registered letter invoking the ten-year guarantee to the builder and their insurer. The claim declaration triggers investigation and appointment of an expert if necessary.
The expert assesses the damage and determines liability. If coverage is accepted, the insurer finances repairs. In case of refusal of coverage, mediation should be attempted first. If amicable resolution fails, legal action may be initiated with the support of a specialized lawyer.
How to declare and repair damage under the ten-year guarantee
Describe the defect precisely in your registered letter. Attach photos, invoices, acceptance reports, and all relevant documents. The insurer appoints an expert to assess the situation. You may request a joint expert assessment. If coverage is accepted, the insurer proposes repair or compensation.
Respect statutory limitation periods. Case law emphasizes that the appearance of damage must be proven within the ten-year period. In complex cases, seek assistance from an independent expert and your local real estate advisor.
Pitfalls to avoid: absence of acceptance, refusal of coverage, and ten-year guarantee after business closure
Failure to formally accept the works often deprives the ten-year guarantee of a clear starting point. Report and document defects without delay. Always verify the scope of the insurance certificate provided by the contractor.
If the builder has ceased activity, procedures become more complex. The insurer may be contacted directly, but proof remains essential. Keep insurer contact details and all contractual documents. In case of refusal, document everything and prioritize amicable resolution before legal action.
Ten-year insurance: pricing, quotes, and advice on choosing coverage
Ten-year insurance costs vary widely depending on trade and risk profile. A self-employed contractor may pay a few hundred euros per year, while a company specializing in major works may pay several thousand euros annually. Request multiple quotes to compare.
Cost factors include turnover, type of work, and claims history. The involvement of a project manager or design office may reassure insurers. Very low-cost insurance should be approached with caution, as exclusions may be problematic in the event of a claim.
Average prices: ten-year insurance for masons, plumbers, electricians
Indicatively, a self-employed mason or carpenter may pay a few hundred euros per year. A plumber’s or electrician’s premium varies depending on installation risks. For SMEs involved in new construction, premiums may reach several thousand euros annually. These figures vary by local markets and insurance conditions.
Example: a self-employed drywall installer may pay €1,200 per year; a new-build construction SME may pay €8,000 per year. These are indicative figures only; for precise quotes, consult a broker or specialized insurer.
Subscription advice: insurance certificate, ten-year insurance broker, and guarantees to verify
Compare contracts based on coverage scope, not just price. Request the ten-year insurance certificate and verify its validity. Check coverage limits, deductibles, and exclusions. A ten-year insurance broker can help find coverage suited to the trade and activity level.
Carefully retain all insurance documents in the sales or construction file. Buyers should require proof of insurance before signing. A local real estate advisor can help interpret clauses and anticipate risks.
Trends and developments 2026: case law, ten-year guarantee, and equipment
Recent case law (2024–2025) has refocused the ten-year guarantee on its traditional scope. The French Supreme Court has restricted coverage to buildings and inseparable components. Equipment added to existing structures is often excluded. These rulings have practical consequences for limitation periods and legal grounds.
In 2026, documentary diligence is increasing. Notaries, insurers, and professionals conduct stricter checks of certificates and acceptance reports. Regulatory initiatives aim to strengthen transparency in construction insurance. Anticipating document preparation and consulting a local advisor is increasingly recommended.
Case law focus: heat pumps and equipment installed on existing buildings
Several rulings published in 2024–2025 limited ten-year coverage to components constituting a structure. The Supreme Court confirmed that a heat pump installed on an existing building is not always considered a structure. If equipment is not inseparably incorporated, defects fall under contractual liability, generally subject to a five-year limitation period.
Practical consequence: for malfunctions of added equipment, action may require proof of contractual fault. Project owners must retain invoices, contracts, and certificates to establish liability. When in doubt, consult a construction law lawyer or expert.
Regulatory outlook 2026: obligations, insurance checks, and ten-year guarantee labeling
Authorities emphasize documentary traceability during property sales. Retention of acceptance reports and insurance certificates is essential. Enhanced checks may emerge for pre-sale diagnostics and insurance files.
In practice, always request the ten-year insurance certificate before work begins. Use a design office or project manager for complex projects. A local real estate advisor helps track regulatory developments and prepare compliant files.
How a local Capifrance real estate advisor supports your project
A Capifrance real estate advisor helps verify documents: ten-year insurance certificates, structural damage insurance, and acceptance reports. They can advise or connect you with experts to identify technical risks (roofing, plumbing, electricity, swimming pool) and define negotiation clauses.
Your Capifrance advisor supports you end to end: valuation, listing distribution, virtual tours, financing partners, and follow-up through signing. In the event of damage, your advisor can guide you to the right contacts to speed up claims handling. Contact a local Capifrance advisor for personalized and secure support.
Conclusion
The ten-year liability guarantee and structural damage insurance are core protections for any real estate project. They help anticipate and manage risks related to construction defects and post-construction claims. Verifying the ten-year insurance certificate, acceptance report, and existence of structural damage insurance is essential before buying or selling. In case of doubt, seek support from a local Capifrance real estate advisor to secure your transaction and gain peace of mind.
The ten-year guarantee protects for ten years against damage compromising structural integrity or normal use.
Structural damage insurance rapidly finances repairs without waiting for liability decisions.
Distinguish between ten-year, biennial, and perfect completion guarantees to invoke the correct coverage.
Systematically verify the ten-year insurance certificate and retain the acceptance report.
Consider case law: certain equipment added to existing buildings may fall under contractual liability.
Always document defects (photos, correspondence, expert reports) and respect procedural deadlines.
Contact a local Capifrance real estate advisor for comprehensive review and tailored support.
FAQ
What does the ten-year guarantee cover?
It covers damage compromising structural integrity or rendering a building unfit for its intended purpose for ten years from acceptance.
Which works are subject to the ten-year guarantee?
Works affecting structural components and inseparable elements (foundations, load-bearing walls, roofing, certain incorporated equipment).
What is not covered by the ten-year guarantee?
Aesthetic defects, lack of maintenance, and often equipment added to existing structures.
What are the different construction guarantees?
Perfect completion (1 year), biennial good working order (2 years), and ten-year guarantee (10 years).
How does the ten-year guarantee work?
It activates upon identification of qualifying damage: claim declaration, insurer investigation, expert assessment, repair or compensation.
How long does the ten-year guarantee last?
Ten years from the official acceptance report of the works.
How do you invoke the ten-year guarantee?
Send a registered letter to the builder and insurer with evidence and photos, then follow expert and repair procedures.
How can you verify a company’s ten-year guarantee?
Request the insurance certificate before construction begins; it proves valid coverage.
How much does ten-year insurance cost?
From a few hundred to several thousand euros per year depending on trade, turnover, and work type.
Is ten-year insurance mandatory?
Yes. Any builder involved in construction must take out mandatory ten-year insurance before work begins.
Author :
Frédéric Rémy – Director of Commercial Performance
A real estate professional for several years within the Capifrance network, I would like to share with you some essential advice to help you succeed in your real estate project with the support of our advisors.
