Housing, David Lisnard
Social housing: Abolish Article 55 of the SRU law; possibly a capped flow target
Direction of change: decrease, compared with current law.
The lever. Construction of social housing: annual target, or obligations imposed on municipalities (loi SRU). Direction rule: ↑ more social housing, tougher obligations.
« Dans ce domaine une mesure essentielle sera la suppression de l’article 55 de la loi SRU du 13 décembre 2000 obligeant les communes à disposer de 20% et bientôt 25% de logements sociaux. […] Il faut libérer le marché du logement et, peut-être de façon transitoire, un nouveau dispositif pourrait remplacer l’objectif sur le stock par un objectif sur le flux des habitations construites, défini par une concertation entre l’Etat et les collectivités concernées et qui serait plafonné. »1Translation by the editorsIn this area an essential measure will be the abolition of Article 55 of the SRU law of 13 December 2000, which obliges municipalities to have 20% and soon 25% social housing. […] The housing market must be freed and, perhaps on a transitional basis, a new scheme could replace the target on the stock with a target on the flow of homes built, defined through consultation between the State and the local authorities concerned, and which would be capped.
Encoding
No cost-schedule parameter for this position: see the costing for the reason.
Costing
Announced by the candidate
not announced
The programme does not cost this measure.
Published costings
none
No external costing of this position recorded to date.
Our calculation
not costed
Abolition of the 20 to 25% social housing obligation, possibly replaced by a capped flow target: a planning rule, with no direct effect on the general government balance that can be costed.
Current law, sources and limits of the cost schedule
Current law. SRU act: 20 to 25% social housing. Solidarity rent reduction (RLS) levied on social landlords since 2018: €1.1bn in 2025, €1.3bn in the PLF 2026, with a compromise target in the Senate of €0.9bn. 99,000 social housing units approved in 2024, about 33,000 of them PLAI (very-low-income housing).
Horizon. full year 2032, €bn/year
Limits. Coefficient: the Institut Montaigne costs 135,000 additional social housing units per year at €1.9bn to €2.3bn (2.1 central) for general government, i.e. €0.14bn to €0.17bn per 10,000 dwellings (public subsidies of 8 to 9% of a construction cost of €156,000 to €172,000, increased for the RE2020 standard; editors' calculation). “Net” convention: these subsidies include those of Action logement, which is not a public administration; the source does not give its share and the page could not be re-checked in October 2026 (access refused): the coefficient is not net of it and therefore overstates the cost for general government. The reference pace is that of 2024 approvals (99,000); Montaigne started from 65,000 dwellings built. Not counted: the property tax exemption for 25 to 30 years, VAT at 5.5%, the interest rate advantage of loans from the fonds d'épargne (savings fund), land, the equity the State might have to provide (of the order of €2bn according to Montaigne) and the effect on VAT (from −€350m to +€350m depending on whether the dwellings replace or add to other construction). The 5 to 10% increase for the RE2020 standard, specific to the text costed in 2022 (Mélenchon), is applied as is to the other positions. FNAP bricks-and-mortar aid alone (about €5.5k per dwelling) would greatly underestimate the public cost. The RLS (rent reduction scheme) amounts differ according to the stage of the 2026 budget procedure (€1.3bn / €1.1bn / €0.9bn).
- AN, rapport spécial PLF 2026, Logement et hébergement d'urgence (F. Jolivet), 2025-10: « la hausse de la RLS à 1,3 milliard d'euros pour 2026 (contre 1,1 milliard ... ; L'augmentation de l'objectif de production à 120 000 logements (dont 40 000 PLAI) nécessiterait 110 millions d'euros supplémentaires ; 99 000 agréments ont été délivrés en 2024 »
- Sénat, avis PLF 2026 Logement, 2025-11: « 200 millions par rapport à 2025, pour l'élever à 1,3 milliard après 1,1 milliard l'an dernier »
- Institut Montaigne, Présidentielle 2022, chiffrage de « Construire 200 000 logements publics par an pendant cinq ans » (copie d'archive du 19 décembre 2024, le site renvoyant une erreur 403), 2022: « Cependant en tenant compte du rythme de construction annuel des bailleurs sociaux (65 000 logements en moyenne chaque année), ce sont 135 000 unités supplémentaires qu’il faudrait réaliser. En net, le besoin de financement serait ainsi compris entre 22,1 et 25,5 Md€ annuels. En pratique, les subventions publiques représentent de l’ordre de 8 à 9 % du coût total des logements […] Au total, le coût pour les administrations publiques pourrait représenter de 1,9 Md€ à 2,3 Md€ par an. »
How to read these amounts. These are static costs and revenues, with no feedback effect, over a full year: nothing on growth, employment or the revenue that economic activity would gain or lose. A higher net cost does not on its own make a worse policy, nor net savings a better one: each programme rests on an economic model (demand-led stimulus, lower compulsory levies, consolidation of the public accounts…) that the cost schedule does not settle. GDP itself measures a volume of activity, not well-being or the usefulness of what is produced. Economic models and feedback effects.
- Nouvelle Énergie, programme « Réussir une nouvelle ambition française » (page non datée). Read the programme page.
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