⚠️ Article updated on 12 June 2026: the electricity conversion factor dropped from 2.3 to 1.9 on 1 January 2026 (order of 26 August 2025). Before setting the value of the shared property or negotiating the buyout payment, check the home's 2026 rating: an electrically heated property may have left class F or G without any works, via the free certificate from ADEME's DPE-Audit Observatory.
In a divorce, the family home is often the couple's only significant real estate asset. Its value determines the buyout payment (soulte) if one spouse buys out the other's share, the ease of sale if both choose to sell, and the overall balance of the asset division. What separating couples fail to anticipate — and what many notaries do not flag early enough — is the impact of the Energy Performance Certificate (DPE) rating on each of these elements.
Since 1 July 2021, the DPE has been legally binding. An F- or G-rated property is no longer simply a home "to renovate someday": it is an asset subject to imminent rental bans, carrying a growing market discount, and potentially unfinanceable by banks under standard conditions. When this property is at the centre of a matrimonial asset division, its energy rating becomes a first-order parameter — whether it is underestimated or deliberately overlooked.
This article examines five dimensions in which the DPE concretely changes the conditions of a property division on divorce: the valuation of the asset and the buyout payment, financing the buyout, selling in post-divorce joint ownership, works carried out during proceedings, and the situation of spouses whose property is let to a third party.
Are You Affected? DPE as a Partition Parameter by Rating
| Property DPE Rating | Impact on Asset Division | Urgency |
|---|---|---|
| G | Difficult to sell, buyout based on depreciated value, cannot be relet | 🔴 Immediate |
| F | Growing discount, rental ban in 2028, restricted bank financing | 🟠 High |
| E | Moderate discount, risk horizon 2034, to factor into negotiation | 🟡 Medium |
| D or better | No DPE-specific impact | 🟢 Neutral |
The Distorted Buyout Payment: Correctly Valuing an F- or G-Rated Property
Why the Market Value of an Energy-Inefficient Property Is Structurally Underestimated in Divorce Proceedings
The buyout payment is calculated from the property value agreed in the matrimonial asset division deed. In principle, this value is the actual market value on the date of partition — the price the property would fetch on the open market between unrelated parties.
The problem is that property valuations used in divorce proceedings are often carried out by agents whose comparative method (price per m² adjusted for floor area) ignores the DPE rating. DVF transaction data used as benchmarks may indiscriminately include properties rated A through G, artificially smoothing prices. Yet notarial data published in 2024 document an average discount of 5 to 12% for F- or G-rated properties compared with equivalent C- or D-rated properties in the same area — with gaps exceeding 18% in major cities.
The direct consequence: if the value agreed in the partition does not account for the DPE discount, the spouse buying out the other pays a buyout based on an inflated figure. They then bear alone, after the buyout, the cost of renovation works needed to bring the property into compliance — works that should have been factored into the initial valuation.
Two Asymmetric Positions Depending on Who Is Buying Out
The DPE question in partition valuation creates conflicting interests between the two spouses:
The spouse buying out has an interest in having the DPE discount factored into the property value, and possibly in having the estimated cost of mandatory future works deducted. This reduces the buyout payment they must make and avoids paying twice: an inflated soulte, then renovation costs.
The spouse selling their share has an interest in keeping the property value as high as possible to maximise the soulte received. But they must weigh the opposite risk: too high a value may lead to a financing refusal for the buying spouse — forcing a court-ordered joint sale, or even a judicial auction, both of which are structurally less favourable for both parties than an agreed private sale at an adjusted price. Overstating the value to maximise the buyout can sometimes undermine the feasibility of the buyout itself.
This asymmetry is at the root of many deadlocks in matrimonial asset liquidations involving an energy-inefficient property. The solution lies in a contradictory property appraisal — jointly commissioned or ordered by the family court judge — that explicitly incorporates the DPE rating as a documented discount factor.
Case Study: Buyout Payment on an F-Rated Flat in the Paris Region
Property profile: 4-room flat (82 m²), southern suburbs of Paris (Zone B1), built in 1978, communal gas heating, DPE rating F, no outstanding mortgage. Community of property regime, two equal-share spouses (50/50). Spouse A wishes to buy out the 50% held by Spouse B.
| Scenario | Agreed Value | Buyout paid by A to B (50%) | F→D Works borne by A alone | Total outlay for A |
|---|---|---|---|---|
| Valuation with no DPE discount | €420,000 | €210,000 | ~€22,000 net | €232,000 |
| Valuation with 10% F-rating discount | €378,000 | €189,000 | ~€22,000 net | €211,000 |
| Difference | − €21,000 | — | − €21,000 |
Factoring the DPE discount into the valuation saves A €21,000 on the buyout — roughly equivalent to the full cost of renovation works A will have to fund alone once the sole owner. Note: in both scenarios, A also pays the partition duty on the net shared assets.
Partition Duty: A Fixed Cost That the DPE Discount Also Reduces
Liquidating a matrimonial property regime triggers partition duty of 2.5% on the net shared assets (CGI article 746), regardless of the method chosen — buyout, sale or preferential allocation. This duty is owed jointly by both spouses and adds to other procedural costs.
| Scenario | Shared Assets | Partition Duty (2.5%) |
|---|---|---|
| No DPE discount | €420,000 | €10,500 |
| With 10% DPE discount | €378,000 | €9,450 |
| Saving | €1,050 |
Dual effect of the DPE discount: €21,000 saving on the buyout + €1,050 on partition duty = €22,050 total gain for the buying spouse — at no additional cost, solely through better-documented initial valuation.
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Financing the Buyout: When the DPE Blocks the Mortgage
The Impact of DPE Rating on Mortgage Eligibility
Since 2022, several banks have been progressively incorporating the DPE rating into their credit risk analysis. This trend stems primarily from the European Banking Authority's guidelines on ESG risks in the banking sector (EBA/GL/2022/06), which require institutions to identify and measure their exposure to transition-related risks — including the depreciation of energy-inefficient real estate assets. Some lenders consequently apply a discount to the collateral value of F- and G-rated properties, reducing the loan amount offered or tightening lending conditions.
In practice, a spouse seeking to finance the buyout of their partner's share in an F- or G-rated property may encounter: outright refusal by some lenders, a discount on the mortgageable value of the property (reducing the loan amount), or a requirement to carry out renovation works before funds are released.
The Works Condition Precedent: A Mechanism to Anticipate
Some lenders make the buyout mortgage conditional on a commitment to carry out energy renovation works within a defined period (typically 3 years), with a post-works DPE attestation clause. This condition can block or delay the finalisation of the partition if the buying spouse is not in a position to commission works simultaneously.
Several alternatives exist: jointly co-financing works before the partition is finalised during a temporary period of joint ownership, incorporating works costs into the buyout loan via an attached home improvement loan, or selling the property if financing proves impossible. This question must be anticipated during partition negotiations — not discovered during the bank's loan review.
⚠️ Warning: A spouse allocated the property who plans to finance it with a mortgage must anticipate that the bank will factor in the DPE rating. Discovering a financing refusal or a works condition precedent after signing the partition deed can unravel the entire arrangement and force a distressed sale.
The Separation of Property Regime: Specific Implications
Around 20% of married couples in France have opted for a separation of property regime. In this regime, if the home belongs solely to one spouse, there is no buyout payment or partition duty — but the non-owning spouse may be entitled to an occupation indemnity if the owner claims it for the period during which they occupied the property after the de facto separation. If the property is co-owned in a conventional joint ownership arrangement between the two spouses, joint ownership rules apply: both parties must agree on acts of disposal, including the sale or major works. The spouse buying out the other's share remains subject to the same DPE-related financing obstacles as in other regimes.
Selling in Post-Divorce Joint Ownership: Specific Pitfalls with Energy-Inefficient Properties
Post-Community Joint Ownership and Regulatory Pressure
When both spouses choose to sell rather than buy out, they remain in joint ownership until the sale is completed. This period generates specific complications when the property is an energy-inefficient home — deadlocks comparable to those of inheriting an energy-inefficient property in joint ownership.
If one ex-spouse continues to occupy the property during proceedings, they may be reluctant to commission works on a home they know they must vacate. The result: the property sells without renovation, bearing the associated discount, when targeted works could have materially improved the price. Furthermore, if the property is let to generate shared income, the DPE rating conditions both the legality of that letting and the rent level — both ex-spouses, as co-owners, bear joint liability to the tenant.
Reducing the Discount on the Sale Price
To maximise the sale price of an energy-inefficient property in a divorce situation, two levers are available even in a constrained context:
Lever 1 — Carry out quick-win works before listing. Insulating the loft or replacing an old boiler can, for a net cost of €5,000 to €15,000 after grants, move a property from F to D. The gain at sale typically exceeds this cost. These works require both co-owners' agreement and can be financed by drawing on a dedicated joint blocked account for property charges.
Lever 2 — Appoint an estate agent specialising in properties to renovate. Some agents know how to present renovation potential to investor buyers who incorporate works costs into their offer, reducing the discount compared with a general-market listing.
Works Decided or Commissioned During Divorce Proceedings
Who Decides on Works to the Shared Property?
During divorce proceedings — between filing the petition and pronouncement of the divorce — spouses remain subject to their matrimonial regime and the rules governing management of shared property continue to apply.
Under the community of property regime, routine management acts can be carried out by either spouse alone. Major renovation works (insulation, replacement of the heating system) are treated as acts of disposal on a shared property and require both spouses' agreement (Civil Code article 1424). In practice, the family court judge can be petitioned to authorise urgent works if one spouse unreasonably withholds consent.
Under a separation of property regime with the property held in joint ownership, acts of disposal require unanimity; management acts require a two-thirds majority of undivided rights (Civil Code article 815-3).
The Fiscal Issue of Unilaterally Funded Works
If one spouse unilaterally funds renovation works on the shared property during proceedings, they acquire a claim against the joint ownership for the other's share of costs. This claim must be recorded in the matrimonial asset division deed — otherwise it is lost. A spouse who advances €15,000 for works on the shared property without claiming half at partition permanently loses €7,500.
⚠️ Warning: Any unilateral funding of works on a shared property during proceedings must be documented (quotes, invoices, bank statements) and asserted in the liquidation deed as a claim against the joint ownership. Without formalisation in the notarial deed, the expenditure is reclassified as a contribution to matrimonial charges and is not recoverable.
Exclusive Occupation of the Property by One Spouse During Proceedings
When the family court judge grants exclusive occupation of the family home to one spouse during proceedings — particularly to secure the children's primary residence — that spouse occupies the property as their main home. DPE regulatory restrictions target lettings only, not owner-occupation: a G-rated property can continue to be lived in by its owner-occupier, even though letting it has been banned since January 2025.
The occupying spouse does, however, bear the energy costs of an inefficient property without being able to decide on works alone, and the other spouse may claim an occupation indemnity for the period of exclusive use, calculated on the property's rental value.
Letting the Shared Property to a Third Party During Proceedings
If the property is let or already tenanted during proceedings, DPE regulatory constraints apply to both spouses jointly in their capacity as co-landlords:
- For a property rated F or G, the rent cannot be increased between tenancies or on renewal (decree of 24 August 2022).
- For a property rated G, no new lease can be signed since 1 January 2025. If the sitting tenant gives notice during proceedings, the property cannot be relet without works.
- For a property rated F, the same reletting ban will apply from 1 January 2028.
Key takeaway: These constraints reduce the property's rental value during proceedings — and therefore shared income — while fixed charges continue to run. They constitute an additional argument for accelerating either renovation or sale, rather than maintaining joint ownership while waiting for an agreement.
Common Mistakes
Mistake 1 — Valuing the property without mentioning the DPE rating to the valuer. The DPE discount is not automatically factored in by valuers in divorce proceedings. If you are the buying spouse, commissioning a counter-appraisal that explicitly incorporates the DPE rating is often the most financially rewarding step in the entire process — €21,000 saved on the buyout in the example above, plus €1,050 less in partition duty.
Mistake 2 — Overlooking the DPE's impact on bank financing. The bank will factor in the DPE rating when assessing the buyout mortgage. Discovering a financing refusal or a works condition precedent after signing the partition deed can unravel the entire arrangement and force a distressed sale.
Mistake 3 — Leaving unilaterally funded works undocumented. Any works funded by one spouse alone on the shared property during proceedings must be documented and asserted in the liquidation deed as a claim against the joint ownership. Without formalisation in the notarial deed, the claim is lost.
Mistake 4 — Maintaining post-divorce joint ownership without setting a maximum time limit. Post-divorce joint ownership on an energy-inefficient property is doubly costly: running charges accumulate, the discount deepens, and the property deteriorates in the absence of agreement on works. If neither ex-spouse wishes to buy out, setting a maximum sales period in the divorce settlement or partition deed protects both parties.
Conclusion
An F- or G-rated property in a divorce is not just an asset to divide — it is an asset whose value, financing capacity and ability to generate rental income are all affected by its energy rating. The figures in this article illustrate this concretely: factoring a 10% DPE discount into the valuation of an F-rated flat at €420,000 saves the buying spouse €22,050 — €21,000 on the buyout payment and €1,050 on partition duty — roughly equivalent to the full net cost of future renovation works.
These savings are not automatic. They require a documented appraisal, a negotiation that is consciously informed by the DPE rating, and early anticipation of financing obstacles before signing the partition deed. The first step is knowing precisely what your property is worth — DPE included.
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