What Rooj by GA does

Rooj by GA is a French residential real estate developer and brand of GA Smart Building, launched in 2022 to market low-carbon new-build housing constructed using off-site prefabrication methods. It develops apartments, townhouses, and managed residences (co-living) under VEFA forward-sale contracts, primarily in Île-de-France and regional French cities including Tours, Toulouse, Besançon, and Ferney-Voltaire, with eight named programs in commercial launch and several reference projects under co-promotion with partners such as OGIC, Premium Promotion, Pitch immo x woodeum, Grand Paris Aménagement, and Foncière Logement.

The company's core technology stack is industrialized off-site construction: 2D prefabricated structural components (walls, floors, facades with integrated joinery) and 3D modular units (bathrooms, technical blocks) manufactured in GA Smart Building's nine factories — including three Ossabois wood factories producing PEFC/FSC-certified French mass timber — and assembled on-site. Design and logistics are managed via BIM (Building Information Modeling) end-to-end, and the PREGA subsidiary supplies low-carbon concrete targeting a 70% CO2 reduction versus traditional formulations. Programs are positioned as compliant with and ahead of the French RE 2020 environmental regulation, with energy consumption reductions of up to 50% and delivery times up to 30% faster than traditional new-build.

Rooj by GA monetizes primarily through one-time VEFA forward sales to individual homebuyers (primary residence) and LMNP/LLI investors, supplemented by mixed-tenure programs that include social (LLS) and intermediate (LLI) housing developed in partnership with public operators, and managed co-living residences generating recurring rental income. Distribution runs through showrooms and sales boutiques (Paris, Tours), an inside-sales team reachable by phone and web, a dedicated buyer client portal (myrooj.fr), and institutional co-promotion channels. The brand is carried by subsidiary GA Immobilier Résidentiel; GA Smart Building (the parent) employs roughly 800 people, 60% of whom are shareholders, and received Eurazeo as a new institutional investor in 2025 alongside B Corp (2023), EcoVadis Platinum (2024), and SBTi validation (2024).

Name

Rooj by GA

Legal name

Rooj by GA

Website

https://rooj.fr

Company type

Private

Founded year

2022

Operating status

Operating

Headcount range

11–50 employees

Short description

Rooj by GA is a French residential real estate brand of GA Smart Building that develops and sells low-carbon, off-site-constructed new-build apartments, townhouses, and managed residences to individual buyers and investors across France via VEFA forward sales and co-promotion partnerships.

Ownership category

akta.pro rank

Product category

Residential Real Estate Development

NAICS

New Housing For-Sale Builders (236117), Prefabricated Wood Building Manufacturing (321992)

SIC

Prefabricated Wood Bldgs & Components (2452)

akta.pro primary industry

Residential Land Development & Subdivision Homebuilding (Build-to-Sell Communities) (IMAFABAL)

akta.pro secondary industries

Residential Modular & Prefabricated Home Construction (IMAFABAF), Residential Affordable Housing Development & Construction (IMAFABAI)

Keywords

• Off-site construction
• Low-carbon housing
• Residential real estate development
• VEFA property sales
• Sustainable construction

Headquarters

HQ city

Paris

HQ country

France

HQ region

Europe

Offices4 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Supply Chain, Operations, Marketing or Sales, Infrastructure, Technology or R&D

Revenue model

1. VEFA property sales (forward sale off-plan): Primary revenue stream from selling new-build residential properties (apartments and houses) through the VEFA (Vente en État Futur d'Achèvement) model — forward sales of off-plan properties to individual buyers and investors. Revenue is recognized upon notarial deed signature and delivered through progressive payment stages tied to construction milestones.
2. Social and intermediate housing (LLS/LLI): Development of social housing (Logements Locatifs Sociaux, LLS) and intermediate rental housing (LLI) in co-promotion with public housing operators and institutional partners, providing diversified revenue streams.
3. Managed residences (co-living): Development of managed residences such as co-living (Synapses project in Courbevoie with Pitch immo x woodeum), offering furnished units for rent and generating recurring rental income streams.
4. Furnished rental (LMNP): Sale of turnkey furnished properties to investors under the LMNP (Loueur en Meublé Non Professionnel) regime, who then lease them out. Rooj by GA delivers fully furnished units ready for immediate rental.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels5 records

Core offering

Rooj by GA develops and sells new low-carbon residential housing programs (apartments and townhouses) across France, built via off-site prefabrication using sustainable materials such as low-carbon concrete (PREGA) and PEFC/FSC-certified French timber (Ossabois). The company delivers properties under the VEFA (forward sale off-plan) model with guaranteed delivery dates, targeting both individual primary-residence buyers and LMNP/LLI property investors. Additional offerings include co-living managed residences and co-promotion partnerships for social and intermediate housing.

Product overview

Rooj by GA is a brand of GA Smart Building offering a portfolio of new low-carbon residential housing programs built using off-site construction methods. The company develops apartments and townhouses across France, primarily in Île-de-France and major regional cities, under various named programs including Rooj-Lumière, Rooj-Sénia, Esprit Cartoucherie, Rooj-Paimboeuf, Rooj-Coteau, Le Clos de Corbeville, Les Casernes, and Rooj-Brulard. The company also develops managed residences (co-living) and reference projects. All programs feature eco-responsible design, low-carbon materials (wood, low-carbon concrete), BIM methodology, and faster delivery times compared to traditional construction. Programs are sold to individual buyers (primary residence or investment) and include various financing assistance options.

Differentiator

Problem solved

Functional benefit

Products and services

• Rooj-Lumière (Chatou) New-build low-carbon residential program in Chatou (78) comprising apartments from 2 to 4 rooms with outdoor spaces, located near RER A station. Built off-site using sustainable materials, targeted at primary-residence buyers and investors. Starting from €299,000.
• Rooj-Sénia (Thiais) New-build low-carbon housing development in Thiais (94) with apartments from 2 to 4 rooms, located near the future Grand Paris Express Line 14 station. Built off-site, targeted at primary-residence buyers and investors. Starting from €242,000.
• Esprit Cartoucherie (Toulouse) Co-promotion with Premium Promotion and Zelidom in Toulouse (31), offering 2 to 5-room apartments in the dynamic Cartoucherie eco-district. Includes 133 accession units, 60 controlled-access units, and 30 social housing units. Currently in avant-première phase. Pricing upon request.
• Rooj-Paimboeuf (Ferney-Voltaire) New-build low-carbon housing in Ferney-Voltaire (01) with studios to 5-room apartments, located 10 minutes from Geneva. Total program: 57 lots. Targeted at cross-border workers and LMNP investors. Starting from €239,000 (studio, 32m²).
• Rooj-Coteau (Romainville) New-build low-carbon residential program in Romainville (93) offering studios to 5-room apartments, located near Metro Line 5 and future T Zen 3. Typologies from studio (31m²) to T4 (79-85m²). Starting from €196,054.
• Le Clos de Corbeville (Orsay) Co-promotion with OGIC in Orsay (91), featuring studios to 4-room apartments in a new family-friendly neighborhood near Paris-Saclay innovation cluster. Total program: 39 lots (first phase). Pricing from €292,000 (T2, 56m²).
• Les Casernes (Tours) New-build low-carbon housing development in Tours (37) on a former military site, featuring 2 to 5-room apartments with biosourced materials and off-site construction. Includes 105 social housing units via Tours Métropole Habitat. Typologies from T2 to T5. Starting from €211,879 (T2, 5.5% VAT).
• Rooj-Brulard (Besançon) New-build low-carbon housing development in Besançon (25) with apartments and townhouses in the new Brulard district, featuring 185 lots across 3 phases.
• Synapses (Courbevoie - Co-living Managed Residence) Co-living managed residence in Courbevoie (92) developed with Paris La Défense, Pitch immo x woodeum, comprising 6,400 m² of co-living space and 2,000 m² of active base (food court, gym, retail) on the Segoffin site developed by Paris La Défense.

Quantifiable outcome

• Up to 30% faster delivery vs traditional new-build real estate, with delivery date guaranteed in the notarial deed
• +5 more outcomes

Named customers7 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Six partnerships are on record, tiered core and major.

• OssaboiscoreTechnology or Integration · 1 January 2018GA Smart Building acquired Ossabois in 2018, a French industrial leader in timber construction. Ossabois operates 3 factories producing mass timber components for off-site construction, providing Rooj with proprietary low-carbon structural elements.
• OGICcoreChannel Partner/ Reseller/ DistributorCo-promotion partnership for Le Clos de Corbeville in Orsay (40 apartments in accession, part of a 228-lot project). OGIC is a major French real estate developer, and this co-promotion combines Rooj's off-site low-carbon expertise with OGIC's development capabilities.
• Premium PromotioncoreChannel Partner/ Reseller/ DistributorCo-promotion partnership for Esprit Cartoucherie in Toulouse (223 units in the Cartoucherie eco-district). Also involves Zelidom. The project includes 133 accession, 60 controlled-access, and 30 social housing units.
• Pitch immo x woodeumcoreChannel Partner/ Reseller/ DistributorCo-promotion partnership for Synapses co-living residence in Courbevoie (Paris La Défense). Pitch immo and woodeum collaborate on a 6,400 m² co-living project plus 2,000 m² active base (food court, gym, retail) on the Segoffin site developed by Paris La Défense.
• Grand Paris AménagementcoreChannel Partner/ Reseller/ DistributorCo-promotion partnership for Rooj-Charles Renard in Saint-Cyr-l'École (71 units: 58 in accession, 13 in LLI with Versailles Habitat). GPA provides land and urban planning context for the development.
• Foncière LogementmajorChannel Partner/ Reseller/ DistributorPartnership for CPI Bezons — 142 housing units developed with Foncière Logement, a major French institutional real estate player specializing in intermediate housing.

Scale indicators10 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Vinci Immobilier: Residential property developer within the Vinci Group, active across new-build housing, serviced residences, and renovation in France. Comparable in scale and for-sale buyer focus, with conventional construction methods.
• Eiffage Immobilier: French residential developer (subsidiary of Eiffage Group) covering housing, serviced residences, and mixed-use developments. Direct competitor in the new-build residential market but lacks Rooj's verticalized off-site factory and proprietary low-carbon concrete.
• Kaufman & Broad: Established French for-sale homebuilder with nationwide presence in apartments and individual houses. Direct overlap with Rooj's primary VEFA buyer segment, but operates a conventional site-built model without Rooj's proprietary off-site construction platform.
• Altarea Cogedim: Major French real estate developer (Altarea SCA) with a residential arm (Cogedim) serving first-time buyers, investors, and second-home buyers. Substantial land bank and capital base, comparable buyer segments but conventional construction approach.
• Bouygues Immobilier: Major French residential developer (part of Bouygues Group) developing new-build housing across France. Competes with Rooj for buyers and land, particularly through its Linkcity sustainable real estate arm, but lacks Rooj's off-site manufacturing vertical integration.
• Nexity: France's largest residential real estate developer, offering new-build housing (apartments, houses) across the country with extensive land bank and capital base. Overlaps with Rooj's for-sale residential core but operates across a much wider portfolio without Rooj's off-site low-carbon specialization.

Direct peers

• Woodeum: French timber-construction real estate developer focused on low-carbon residential and mixed-use developments using CLT (cross-laminated timber). Already a co-promotion partner with Rooj on the Synapses project in Courbevoie — the most directly comparable timber-led residential peer.
• Vestack: French industrial low-carbon construction startup using off-site prefab methods to deliver multi-family residential buildings. A direct emerging peer to Rooj with comparable prefab DNA and sustainability positioning, though at earlier scale.

Emerging players

• Brikawood: French wood prefab construction specialist designing demountable wooden houses and buildings. Overlaps with Rooj's low-carbon timber focus (Ossabois) but operates at smaller scale with a more DIY/individual-home orientation.
• NaCoop: French timber construction firm specializing in wood-frame buildings and prefabricated timber elements, including multi-family and individual housing. Comparable timber/off-site philosophy to Rooj's Ossabois-based approach but at earlier commercial scale.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/rooj-by-ga

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries1 record

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 Rooj by GA