Most new residential developments in France will incorporate at least some social housing. Since the SRU law of 2000, communes in larger urban areas must hold at least 25% social housing among their principal residences (20% in less pressured areas). The target applies to a commune’s whole stock, not to each housing scheme. Communes translate the requirement into scheme-level rules through their local urban development plan.
In my last article on stone construction I featured a “pension de famille” – a small supported residence with shared spaces – at rue des Apennins in Paris. This housing type is one of many different types sitting under the umbrella term “social housing”. In this article I’ll outline what’s under the umbrella.
Side note on HLMs: despite what a Google image search or news article might suggest, HLM is a status, not a building. HLM stands for habitation à loyer modéré, moderate-rent housing: below-market rental housing let under income conditions.
The categorisation starts with the French public financing mechanisms for social housing. There are three main types:
PLUS (Prêt Locatif à Usage Social), a loan for social-use rental housing. This is the most common funding line, financing most of France’s social housing stock.
PLAI (Prêt Locatif Aidé d’Intégration), financing for integration-focused rental, for tenants with very low incomes. Résidences sociales and pensions de famille (such as the rue des Apennins building) are financed entirely through PLAI in combination with state and local capital grants.
PLS (Prêt Locatif Social), a social rental loan to fund housing for tenants with a higher income ceiling than applies for PLUS-funded housing.
In practice a single building is usually financed by more than one of these funding lines.
Other funding for non-market-rent housing:
PLI (Prêt Locatif Intermédiaire) funds housing for tenants with incomes above social housing ceilings but who cannot access market-rent housing. It’s an older intermediate-financing tool, largely superseded in new production by the LLI regime created in 2014, but still present in the existing housing stock.
LLI (Logement Locatif Intermédiaire) is funding for intermediate rental housing, established in 2014 to fill the gap in high-demand markets between social and free-market rents. Rents are set at roughly 10-15% below local market levels, with income ceilings well above the standard social housing level. In Paris in 2026, the LLI ceiling for a single person is roughly 1.6 times that of the ceiling for PLUS-funded housing.
Neither PLI- nor LLI-funded units count towards a commune's SRU social housing quota.
Who lends to whom?
In a previous article, I wrote about a public financial institution with no real equivalent outside France: the Caisse des Dépôts et Consignations (CDC). It is a major funder of French social housing.
PLAI and PLUS funding is distributed exclusively by the CDC.
It can be accessed by organismes HLM (below-market-rent housing bodies), sociétés d’économie mixte (SEMs), local authorities, and certified non-profit housing associations. Borrowers include Paris Habitat (the largest social landlord in the Paris region with around 125,000 units) and Immobilière 3F / Groupe 3F (a social enterprise within Action Logement, with around 300,000 units nationally).
Recall that PLS funding is for the higher-income tier of social housing, including student housing. It carries no direct state subsidy (unlike PLAI/PLUS) but still confers a reduced VAT rate (10% on new-build PLS, the same rate that applies to new-build PLUS, against 5.5% for PLAI). PLS funding also comes with a 25-year property-tax (TFPB) exemption, extended to 30 years for schemes meeting environmental-performance criteria.
PLS funding is distributed either directly by the CDC or by authorised credit institutions that have signed a convention with the CDC.
With broader accessibility than PLAI/PLUS, PLS funds can be borrowed by entities such as local authorities and their groupings, health and medico-social establishments, local public enterprises, and private property developers.
Private individual and corporate investors can also access PLS funding.
Who can access social housing?
The funding streams outlined above have income ceilings built in. To access a housing unit funded by a particular loan type, the tenant’s income must be below the relevant ceiling. For each funding type, in 2026 the thresholds in Paris for a single person are as follows:
PLAI: €14,811.
PLUS: €26,920.
PLS: €34,996.
PLI: €48,456 (funding was allocated before 2015); €44,344 (since 2015).
LLI: the same as the current PLI (€44,344).
Shelter or housing?
The French distinction between hébergement (accommodation/shelter) and logement (housing) translates approximately to short-term versus permanent housing.
Hébergement is time-limited, often supervised accommodation such as a CHRS (Centre d'Hébergement et de Réinsertion Sociale) or CHU (Centre d'Hébergement d'Urgence). The occupant has no lease or tenure and there are typically support staff on-site.
Logement implies occupancy under a lease or equivalent contract, even where support is present, such as in a résidence sociale or pension de famille.
The funding acronyms are a useful shorthand. With the outline above, you can now identify who funded a social housing scheme, who can access it, and how secure their tenure is.
This is so interesting to me. Seattle is in the infant stage of setting up a social housing program. But i sort of doubt the city is a big enough entity to make it work.
I wonder if the french financing scheme is at this point, self sustaining. Does the interest income and principal repayment amount to enough so that no ongoing subsidy from the state is required? No that would be v cool.