GCSMS SIAO 35

What GCSMS SIAO 35 does

GCSMS SIAO 35 is a French Groupement d'Intérêt Public (GIP) — a public-interest grouping structure — constituted in 2010 to operate the Service Intégré d'Accueil et d'Orientation (SIAO, 'Integrated Reception and Orientation Service') for the department of Ille-et-Vilaine, headquartered in Rennes. Its functional mission is to coordinate emergency accommodation and insertion housing for people experiencing homelessness or housing precariousness in the department, acting as the single point of intake, evaluation, and orientation across the 115 emergency hotline, the SIAO INSERTION insertion-housing track, and stabilization mechanisms. It manages a portfolio of 424 accommodation places — 14 stabilization, 390 insertion (operated through 7 partner CHRS — Centres d'Hébergement et de Réinsertion Sociale), and 20 'grandes marges' — and runs five territorial commissions covering Rennes-Brocélande, Saint-Malo, Fougères, Vitré, and Redon.

The operational backbone is the national SI-SIAO web platform hosted at siao.social.gouv.fr, mandatory across all departmental professional social workers since June 2023, which GCSMS SIAO 35 both administers and trains evaluators on. The 115 emergency hotline is augmented by a Serveur Vocal Interactif (interactive voice server) for automated routing. Coordination responsibilities extend to the Department's observatory function, producing publications such as the 'Baromètre enfants à la rue' on unhoused children. The organization produces a monthly newsletter ('Le Lien') and the annual 'Guide solidaire'.

The business model is non-commercial: the organization is financed by grants from the French State (via the Préfecture and DDETS 35 — Direction Départementale de l'Emploi, du Travail et des Solidarités) and local authorities (Conseil Départemental d'Ille-et-Vilaine, CCAS, and communes). The service is provided free of charge to beneficiaries. Strategic partnerships span DDETS 35, Préfecture, 115/SAMU Social, Croix-Rouge, Emmaus, COALLIA, CCAS/CDAS, social housing providers, and the Conseil Départemental — making GCSMS SIAO 35 the structural intermediary between funders, field operators, and end beneficiaries rather than a standalone commercial entity.

Name

GCSMS SIAO 35

Legal name

GCSMS SIAO 35 ; Service Intégré d'Accueil et d'Orientation

Website

https://siao35.fr

Company type

Public

Founded year

2010

Operating status

Operating

Headcount range

11–50 employees

Short description

GCSMS SIAO 35 is a French public-interest group (GIP) that coordinates emergency shelter and insertion housing for homeless individuals across Ille-et-Vilaine, operating the SIAO dispositif and 115 hotline, funded by State and departmental authorities and serving vulnerable beneficiaries free of charge.

Ownership category

akta.pro rank

Product category

Homelessness Services Coordination

NAICS

Temporary Shelters (624221), Community Housing Services (62422), Community Food and Housing, and Emergency and Other Relief Services (6242)

SIC

Services-Social Services (8300)

akta.pro primary industry

Emergency Shelter, Camp Management & Non-Food Items (NFI) (BPAGAAAC)

Keywords

• Emergency shelter coordination
• Social housing placement
• Homelessness services coordination
• Housing referral services
• Public social services

Headquarters

HQ city

Rennes

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Public funding: Funded by government (État, Préfecture, DDETS 35) and local authorities (Conseil Départemental, CCAS, communes) as a public interest grouping (GIP). No commercial revenue generation.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels3 records

Core offering

GCSMS SIAO 35 operates as a single-window (guichet unique) public social service that coordinates emergency shelter requests via the 115 hotline and manages 424 insertion housing placements across 7 CHRS facilities in Ille-et-Vilaine through five territorial commissions. It also runs the SI-SIAO digital platform used by social workers to submit, evaluate, and track housing requests, and maintains a centralized observatoire function publishing monthly homelessness data for the department.

Product overview

GCSMS SIAO 35 operates as a unified social services platform combining two main service lines: SIAO URGENCE for emergency shelter coordination via the 115 hotline with territorial commissions covering Rennes-Brocéliande, St Malo, Fougères, Vitré, and Redon; and SIAO INSERTION managing 424 shelter placement spots across 7 CHRS facilities with evaluation and orientation commissions. The organization also provides the SI-SIAO digital platform for social worker request processing, publishes regular observatory reports including the Baromètre enfants à la rue, and distributes the annual Guide solidaire resource directory for partner organizations and beneficiaries.

Differentiator

Problem solved

Functional benefit

Products and services

• SIAO URGENCE

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Partnerships

Eleven partnerships are on record, tiered core and major.

• DDETS 35coreOthersDirection Départementale de l'Emploi, du Travail et des Solidarités - government oversight body responsible for social services supervision and funding allocation.
• Préfecture d'Ille-et-VilainecoreOthersPrefecture - government administrative body providing institutional mandate and coordination for the SIAO service.
• 115 (Samu Social)coreStrategic or Co-development PartnerEmergency housing hotline - primary intake point for housing requests; integrates with SVI (Interactive Voice Server) for routing to appropriate territorial services.
• 7 CHRS (Centres d'Hébergement et de Réinsertion Sociale)coreStrategic or Co-development Partner7 social housing centers managing 390 insertion housing places. Participate in territorial commissions and evaluation process for housing placements.
• CCAS/CDAS (Centres Communaux/ Départementaux d'Action Sociale)coreStrategic or Co-development PartnerLocal social action centers that can pre-fill housing requests via SI-SIAO and participate in evaluation processes.
• Croix Rouge (French Red Cross)majorStrategic or Co-development PartnerHumanitarian organization providing emergency shelter services, mobile teams, and participating in territorial commissions.
• EmmausmajorStrategic or Co-development PartnerSocial integration organization providing shelter and housing services; participates in territorial commissions.
• SAMU SocialcoreStrategic or Co-development PartnerMobile social emergency teams conducting outreach to homeless populations; participates in territorial commissions.
• COALLIAmajorStrategic or Co-development PartnerSocial integration association providing housing and social services; participates in territorial commissions.
• Social Housing Providers (Bailleurs sociaux)majorStrategic or Co-development PartnerSocial landlords whose housing is allocated through SIAO coordination; participate in commissions for transition and adapted housing allocation.
• Conseil Départemental d'Ille-et-VilainecoreOthersDepartmental council providing funding and participating in governance of social services including SIAO.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Others

• COALLIA: Major French social integration association providing CHRS places and housing services. SIAO 35 commissions allocate COALLIA's local capacity, making it a key operational peer at the shelter-operator layer.
• Emmaüs France: National federation of Emmaüs groups operating shelter, housing, and integration services that participate in SIAO 35's territorial commissions. Significant partner and ecosystem participant rather than direct competitor.
• Croix-Rouge française: Major humanitarian operator running emergency shelters, mobile teams, and CHRS places that SIAO 35 commissions allocate. A core operational partner and one of the largest shelter-service providers in the Ille-et-Vilaine ecosystem.
• CCAS de Rennes: Local municipal social action center authorized to pre-file housing requests through SI-SIAO and participating in evaluation processes. Closely adjacent public-sector counterpart at the commune level.
• Fédération des Acteurs de la Solidarité (FAS): National federation of CHRS, SIAO-adjacent NGOs, and social integration operators. Not a direct operator but the principal representative body coordinating homelessness-sector policy and funding advocacy — a key ecosystem participant relative to SIAO 35's mission.

Direct peers

• SIAO 44 (Loire-Atlantique): Nantes-departmental SIAO running the same 115 + SI-SIAO + commission structure for housing demand. Relevant regional peer within western France, sharing similar departmental demographic dynamics.
• SIAO 75 (Paris): Paris-departmental SIAO operating the same guichet unique model for emergency and insertion housing under French state mandate. Most comparable in structure (115 + SI-SIAO + territorial commissions) and the largest by population served, providing a useful scale benchmark.
• SIAO 69 (Rhône): Lyon-departmental SIAO with the same guichet unique mandate covering emergency (115) and insertion housing requests. Comparable in operating model and reliance on a major metropolitan CHRS network.
• SIAO 33 (Gironde): Bordeaux-departmental SIAO operating the national single-window framework for emergency and insertion housing. Closely comparable governance, CHRS integration pattern, and departmental-scale coverage.
• SIAO 13 (Bouches-du-Rhône): Marseille-area departmental SIAO running the equivalent single-window housing coordination model with its own territorial commissions. Direct operational peer, useful for comparing high-pressure urban demand environments.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/gcsms-siao-35

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

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M&A

Investments

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Frequently asked questions about GCSMS SIAO 35