Seine West Housing and Heritage

What Seine West Housing and Heritage does

Seine West Housing and Heritage - legally SEM Seine Ouest Habitat et Patrimoine (SOHP) - is a French Société d'Économie Mixte (SEM), a local public establishment with an industrial and commercial character, founded in 2006 and headquartered at 71 Boulevard Gallieni, Issy-les-Moulineaux. The organization is jointly owned and governed by the eight municipalities of Hauts-de-Seine in which it operates (Boulogne-Billancourt, Chaville, Issy-les-Moulineaux, Marnes-la-Coquette, Meudon, Montrouge, Vanves, and Ville-d'Avray) and is overseen by a Conseil de surveillance (supervisory council). It manages more than 11,000 social housing dwellings plus 4,546 private parking spaces in that catchment, generating recurring rental income from social housing tenants at regulated PLUS and PLAI rates, supplements via the Supplément de Loyer Solidarité (SLS) for higher-income tenants, parking rental income, and ancillary service charges - all without private equity, venture capital, or external shareholders.

SOHP's service offering rests on three pillars: social housing management (rent collection, lease administration, tenant relations); rehabilitation, new construction, and strategic acquisition of additional housing stock (with 2025 examples including the 27-unit Le Phare d'Issy acquisition and the Louis Bouchet residence inauguration); and complementary tenant services - guardian-supervisor staffing, 24/7 technical on-call (astreinte technique), accessibility adaptations for disabled or reduced-mobility tenants, and a home-portage assistance service. Distribution and tenant engagement are delivered through a tenant extranet (sohlea-extranet-locataire.sohp.fr), a free mobile application, in-person reception at headquarters, and the national demande-logement-social.gouv.fr platform for new applicant acquisition.

The underlying technology stack is conventional rather than proprietary: a website CMS, the tenant extranet portal, a companion mobile application, Intercom for customer messaging, cookie-based site analytics, and an interactive property map. No AI/ML capabilities, data flywheel mechanics, or differentiated platform architecture are disclosed. Customer segments split across individual social housing tenants (primary, ~11,000+ families), individual parking renters (secondary, up to 4,546 spaces), and a B2B segment of construction and service contractors participating in SOHP's public procurement tenders - with no concentration on any large commercial tenant, but high political-strategic dependence on the 8 municipal shareholders that own and govern the entity.

Name

Seine West Housing and Heritage

Legal name

SEM SEINE OUEST HABITAT ET PATRIMOINE (SOHP)

Website

https://sohp.fr

Company type

Private

Founded year

2006

Operating status

Operating

Short description

Seine West Housing and Heritage (SOHP) is a French local public establishment (SEM) managing 11,000+ social housing units and 4,546 parking spaces across 8 municipalities in the Hauts-de-Seine department. Revenue derives from income-adjusted rent (PLUS/PLAI), Solidarity Rent Supplements, and parking rentals to individuals.

Ownership category

akta.pro rank

Product category

Social Housing Management

SIC

Services-To Dwellings & Other Buildings (7340)

akta.pro primary industry

Chillers, Boilers & Central Plant Operations (BPABACAG)

Keywords

• Social housing management
• Affordable housing rentals
• Property rehabilitation services
• Tenant services portal
• Public housing operator

Headquarters

HQ city

Issy-les-moulineaux

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2C

Offering type

Services

Cost components

Operations, Personnel, Technology or R&D, Infrastructure, Others

Revenue model

1. Residential Rental Income: SOHP generates revenue primarily through rental payments from its social housing tenants. Rent is charged monthly in arrears, with rent amounts based on income-adjusted rates. Additional supplements (Supplément de Loyer Solidarité - SLS) may apply for higher-income tenants. The organization also derives income from 4,546 private parking space rentals.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

SOHP is a French public housing operator (SEM) that manages more than 11,000 social housing units across eight communes of the Hauts-de-Seine department and rents approximately 4,546 private parking spaces. It also delivers complementary services including technical building maintenance, rehabilitation and new-construction project management, a tenant extranet portal, and a mobile application for its residents.

Product overview

Seine West Housing and Heritage (SOHP) operates as a social housing management company (SEM) providing housing services through a combination of core housing management operations and complementary digital and technical services. The portfolio includes over 11,000 social housing units across 8 communes in Hauts-de-Seine department. The service offering centers on core housing management (tenant relations, rent collection, lease administration) supported by a tenant portal (Espace Locataire) and mobile application for digital access. Technical services including guardian supervisors and emergency on-call support complement the offering, alongside rehabilitation and new construction services. Parking rental services for 4,546 spaces are also available.

Differentiator

Problem solved

Functional benefit

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Three partnerships are on record, tiered minor and core.

• Horizon HabitatminorOthersListed as an external link under partner organizations. Nature of relationship appears to be a peer social housing organization or network within the sector.
• Communes of Boulogne-Billancourt, Chaville, Issy-les-Moulineaux, Marnes-la-Coquette, Meudon, Montrouge, Vanves, and Ville-d'Avray (via respective town halls)coreOthersSOHP operates across 8 communes in Hauts-de-Seine as a SEM (Société d'Économie Mixte), with each municipality being a shareholder and partner in the organization. The local town halls are key stakeholders and referral points for housing applicants.
• Action Logement (ex-1% Logement)minorOthersReferenced in the FAQ as a potential housing allocation channel for employees whose employer contributes to Action Logement (the former 1% Logement scheme). Employers contributing to Action Logement can direct employees toward social housing through this partner.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Paris Habitat: The largest social housing operator in Paris and neighboring communes, OPH (public office) status. Directly comparable as a French social landlord providing PLUS/PLAI rental housing with similar tenant services and public-mission constraints, though at significantly greater scale.
• Immobilière 3F: Major French HLM operator (ESH) with a large Île-de-France footprint including Hauts-de-Seine. Closely comparable as a non-profit social landlord developing, rehabilitating, and managing affordable rental housing in the same Greater Paris market.
• ICF Habitat: Social housing subsidiary of SNCF Group operating rental housing across Île-de-France. Comparable as a social landlord offering PLUS/PLAI units, rehabilitation services, and digital tenant interfaces in the Paris region.
• Seqens: Major French social and intermediate housing operator (ESH) active in Île-de-France. Comparable as a social landlord managing PLUS/PLAI units, executing rehabilitation and new-build programs, and serving similar tenant populations around Paris.
• Logement Français: ESH social landlord with Paris-area operations. Comparable in social housing management, tenant services, and rehabilitation focus within the broader Greater Paris market.

Broad incumbents

• CDC Habitat: Subsidiary of Caisse des Dépôts and one of France's largest social and intermediate housing operators. Comparable in that it manages a national portfolio of subsidized rental housing using the same PLUS/PLAI framework, with similar tenant-facing digital services.
• Vilogia: Large national HLM operator (ESH) with a significant Paris-region presence. Comparable in core social housing management, though operating across multiple regions rather than SOHP's single-department focus.
• Batigère: French social housing group (ESH) with operations in multiple regions including Île-de-France. Comparable in PLUS/PLAI rental management and rehabilitation activity, though at greater national scale.

Regional players

• Valophis: ESH social housing operator with a strong presence in the southern Île-de-France departments. Comparable in operating model (PLUS/PLAI rents, rehabilitation, public procurement) but with a different geographic center of gravity than SOHP.
• Elogie-Siemp: Paris-based SEM social housing operator. Comparable SEM structure and Paris-area focus, though operating exclusively within Paris intra-muros rather than the Hauts-de-Seine suburbs where SOHP is concentrated.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/seine-ouest-habitat

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Seine West Housing and Heritage