GA Smart Building

What GA Smart Building does

GA Smart Building, legally GA SAS and commonly branded Groupe GA, is a French developer-builder specializing in industrialized off-site construction. Founded in the late 19th century (sources cite 1870-1875) and headquartered in Toulouse with Paris offices, the group operates a vertically integrated platform spanning design, manufacturing of prefabricated components, on-site assembly, renovation, and lifecycle property management. Core manufacturing is concentrated in five French factories operated through wholly-owned subsidiaries: Ossabois (3D modular wood construction), PREGA (low-carbon concrete systems), Equilab (amenity equipment), and Paquet Fontaine (carpentry and facades). The engineering stack is anchored by FullBIM, a proprietary 3D digital modeling system, and Galaxy Pilot, an in-house energy-monitoring software that uses sensor data to optimize building performance.

The business model combines developer activity (acquiring land, developing projects via VEFA sale-and-leaseback, and delivering turnkey buildings) with construction services and recurring property management through GA Services. GTM is enterprise field sales targeted at large corporate occupiers (Stellantis, Thales, Airbus, CNES, IDEMIA, Sopra Steria, Orange, Safran), institutional real estate investors (Crédit Agricole Immobilier, Primonial Reim, CDC Habitat, Keys REIM), and public-sector developers (Oppidea, Grand Paris Aménagement, SPLA-IN Noisy Est). Pricing is project-specific and not publicly disclosed. In 2022 the group launched Rooj by GA, its first off-site low-carbon housing brand, and in 2024 created a dedicated Renovation division; in 2025 it announced an expansion of PREGA into public works and civil engineering. The company employs 501-1000 staff, was awarded Deloitte's Best Managed Companies label for four consecutive years through 2024, and received a 2025 investment from Eurazeo.

Name

GA Smart Building

Legal name

GA SAS

Website

https://ga.fr

Company type

Private

Founded year

1870

Operating status

Operating

Headcount range

501–1,000 employees

Short description

GA Smart Building is a French developer-builder specializing in industrial off-site construction, serving enterprise corporates, institutional real estate investors, and public developers through a vertically integrated platform of five factories, design engineering, and property management.

Ownership category

akta.pro rank

Product category

Off-Site Construction & Real Estate Development

NAICS

Prefabricated Wood Building Manufacturing (321992), Commercial and Institutional Building Construction (236220), Nonresidential Building Construction (2362), New Housing For-Sale Builders (236117)

SIC

Prefabricated Wood Bldgs & Components (2452), General Bldg Contractors - Residential Bldgs (1520)

akta.pro primary industry

Residential Modular & Prefabricated Home Construction (IMAFABAF)

akta.pro secondary industries

Commissioning, Retro-Commissioning & Controls Tuning (BPABAGAL), Prefabricated Engineered Wood Building Components (Trusses, SIPs, EWP Kits) (IMAMACAJ), Residential Green / High-Performance Home Construction (Net-Zero, Passive House) (IMAFABAH)

Keywords

• Off-site construction
• Low-carbon real estate
• Modular building systems
• Industrial construction
• Building renovation services

Headquarters

HQ city

Toulouse

HQ country

France

HQ region

Europe

Offices4 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Real Estate Development and Construction: GA Smart Building acts as a developer and builder, delivering turnkey construction projects through sale in future state of completion (VEFA) and direct construction contracts. Revenue is generated from the sale of completed buildings to institutional investors and the construction fees for development projects.
2. Property Management Services: GA Services division provides tailor-made property management services throughout the building lifecycle to optimize real estate asset performance for clients.
3. Off-Site Construction Components: Sale of prefabricated construction components including low-carbon concrete systems (PREGA), wooden modules (Ossabois), and amenity equipment manufactured in Group factories.

Go-to-market motion1 record

Distribution channels4 records

Marketing channels4 records

Core offering

GA Smart Building is a French developer-builder that designs, manufactures, constructs, and renovates large-scale buildings using industrial off-site construction methods. Prefabricated components (low-carbon concrete from PREGA, 3D modular timber from Ossabois, facades, amenities) are produced in the company's French factories and assembled on-site, enabling 20–30% faster delivery and RE2020-compliant, low-carbon output. The group also operates a property management arm (GA Services) and develops modular housing under the Rooj by GA brand.

Product overview

GA Smart Building operates as a low-carbon off-site construction developer and builder, offering an integrated platform spanning building design, construction, renovation, and property management. The core offering centers on industrial off-site construction methods where structural elements, facades, and amenities are manufactured in the company's French factories and assembled on-site. Key subsidiaries supporting this platform include PREGA (low-carbon concrete systems), Ossabois (modular wood construction), Equilab (amenity equipment), and Paquet Fontaine (carpentry/foundations). Additional products include FullBIM (3D digital modeling), Galaxy Pilot (energy monitoring), Flow by GA (indoor geolocation), and Rooj by GA (off-site housing brand). Services span building conception, construction, renovation via dedicated division, and property management through GA Services.

Differentiator

Problem solved

Functional benefit

Brands

• Ossabois: Pre-fabrication and wooden modular construction subsidiary
• PREGA
• Rooj by GA
• GA Services
• FullBIM
• Galaxy Pilot

Products and services

• Off-Site Building Construction Services Core design-and-build offering for enterprises, institutional investors, and public developers: industrial off-site construction of new-build campuses, offices, industrial facilities, logistics hubs, and mixed-use developments, delivering 20–30% faster timelines versus traditional methods and RE2020-compliant low-carbon output.
• Building Renovation Services Off-site renovation services for existing buildings, using prefabricated components to minimize disruption, improve energy performance, and meet RE2020/E+C- certifications. Includes full renovation of historic buildings such as the CNES headquarters at Place Maurice-Quentin.
• GA Property Management Services (GA Services) Tailor-made property management delivered across the building lifecycle for GA's clients, optimizing real estate asset performance through administration, maintenance, and optimization services.
• FullBIM by GA 3D digital modeling system developed by GA Smart Building that creates a digital avatar of construction projects from structural elements and facades to sanitary modules, integrating design through manufacturing and assembly to building operation.
• Galaxy Pilot AI-driven building energy management software connected to thousands of sensors, learning from employee behavior and weather forecasts to optimize energy consumption in real time.
• Flow by GA Building management application providing indoor geolocation services, occupancy analytics, and optimization of lighting, climate control, and space utilization.
• Rooj by GA Off-site low-carbon housing brand offering industrialized residential construction for buyers, social landlords, and student-residence operators.
• Ossabois Modular Wood Construction Modular wood construction subsidiary acquired in 2018, providing 3D wood modules, timber-frame facades, and sanitary modules as part of GA's off-site platform (e.g., the 100% modular wooden Synapses tower at Paris La Défense and the Eklo Hotel in Marne-La-Vallée).
• PREGA Low-Carbon Concrete Systems Low-carbon off-site concrete construction systems produced by the GA subsidiary PREGA, supplying ultra-low-carbon structural elements and prefabricated concrete for buildings, with recent expansion into public works and civil engineering.
• Equilab Amenity Equipment Subsidiary producing amenity equipment (kitchens, bathrooms, fitted-out modules) integrated into GA Smart Building's industrial off-site platform.

Quantifiable outcome

• 20-30% time saving in construction compared to traditional methods
• +7 more outcomes

Named customers13 records

Segments4 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability3 records

Feature5 records

Partnerships

26 partnerships are on record, tiered supporting, core and flagship.

• Aménagement 77supportingStrategic or Co-development Partner · 4 December 2025Partnership to develop 27,000 m² Light Industrial business park in Montereau-sur-le-Jard.
• PREGAcoreTechnology or Integration · 6 November 2025GA Smart Building subsidiary for over 50 years producing low-carbon off-site concrete construction systems. Evolving and expanding into public works and civil engineering sectors. Cornerstone of the Group's unique off-site industrial platform.
• Immobilière 3FcoreStrategic or Co-development Partner · 25 September 2025Partnership with SPLA-IN Noisy Est for urban transformation of new Noisy-Champs station hub with large-scale off-site project. Sales agreement for Lot A1.1 marks launch of first large-scale off-site project in Noisy Pôle Gare district.
• AG Real Estate FrancecoreStrategic or Co-development Partner · 17 April 2025Leading major refurbishment of M62 building in Paris 18th arrondissement. AG Real Estate transforming building into contemporary office space while preserving existing structure and enhancing architectural qualities.
• Grand Paris AménagementcoreStrategic or Co-development Partner · 1 November 2023Partnership for first 100% off-site wood-built show homes for housing in Saint-Cyr-l'École. Grand Paris Aménagement launching 60 family homes for first-time buyers using off-site timber construction.
• Pitch ImmoflagshipStrategic or Co-development Partner · 16 October 2023Joint development consortium for Synapses project - the first 100% modular wooden tower in France at Paris La Défense, Courbevoie. GA and Pitch Immo won the Empreintes tender for innovative, mixed, low-carbon urban projects. Total floor area 8,000 m², 49 metres high, to be completed in 17 months.
• Crédit Agricole Immobilier Corporate et PromotionflagshipStrategic or Co-development Partner · 1 January 2022Joint developers with GA Smart Building for Stellantis grEEn-campus in Poissy (40,000 m² tertiary spaces). Also partners for Up Group Gardens headquarters in Gennevilliers and La Cartoucherie district development.
• IoT ValleysupportingStrategic or Co-development Partner · 12 July 2016Open innovation partnership signed in 2016. Strategic partnership with common position on development of innovative connected solutions for buildings.
• Oppidea (Toulouse Métropole Developer)coreStrategic or Co-development PartnerPublic developer for Toulouse pursuing partnership with GA Smart Building for strong environmental goals. Partnership for future GA headquarters at Toulouse Aerospace eco-district and La Cartoucherie district development (first off-site district in France).
• NexitycoreStrategic or Co-development PartnerPart of consortium with GA Smart Building for third phase of La Cartoucherie district in Toulouse - the first off-site district in France with 600 housing units.
• SPLA-IN Noisy EstcoreStrategic or Co-development PartnerUrban transformation partnership for Noisy-Champs station hub with Immobilière 3F and GA Smart Building launching first large-scale off-site project.
• In'licoreStrategic or Co-development PartnerPartnership to scale up off-site construction for residential development. First project in Thiais: 58 affordable housing units built using off-site methods, with shared ambition to massify off-site construction.
• Atelier Alfonso FemiasupportingTechnology or IntegrationArchitect/urban planner partner for Synapses project in Courbevoie. Provided architectural and urban integration for the 100% modular wooden tower.
• ChartierDalixsupportingTechnology or IntegrationArchitectural firm partner for Ardoines Logistics Hub in Vitry-sur-Seine. Created logistics complex combining architectural quality, tenant needs, and financial equilibrium.
• Espaces Ferroviaires (SNCF Group)coreStrategic or Co-development PartnerSNCF Group urban and property subsidiary partnered for 1pulsion project - first tertiary programme of Grand Matabiau Quais d'Oc district in Toulouse. 13,000 m² office complex built in 15 months.
• EuropoliasupportingStrategic or Co-development PartnerDevelopment company for Toulouse Métropole's Grand Matabiau Quais d'Oc urban renewal project. Managing development of 1pulsion project with Espaces Ferroviaires and GA Smart Building.
• EnedissupportingTechnology or IntegrationPartner for inauguration of B Park building in Balma at Vidailhan eco-district. Grid operator collaboration for office development.
• OssaboiscoreTechnology or IntegrationGA Smart Building subsidiary specializing in prefabrication and wooden modular construction. Provides 3D wood module construction solution for off-site projects including La Cartoucherie district and Synapses tower.
• EquilabsupportingTechnology or IntegrationGA Smart Building subsidiary providing amenity equipment for the industrial off-site platform. Part of complete construction solution from FullBIM to on-site assembly.
• Paquet FontainesupportingTechnology or IntegrationGA Smart Building subsidiary producing carpentry and façade components for the industrial off-site construction platform.
• Rooj by GAsupportingTechnology or IntegrationGA Smart Building subsidiary providing first off-site low-carbon housing brand. Dragon Rouge created ROOJ brand to address housing demand with ecological and social emergency solutions.
• Now CoworkingsupportingStrategic or Co-development PartnerPremium coworking operator managing broader work community at GA Smart Building headquarters Niwa. Brings expertise in dynamic workspaces with national network of nearly 2,000 coworkers across 400 professions.
• EquinoxsupportingStrategic or Co-development PartnerPart of consortium with GA Smart Building and Crédit Agricole Immobilier for Stellantis grEEn-campus development.
• ProgamasupportingStrategic or Co-development PartnerPart of developer/investor consortium for Stellantis grEEn-campus in Poissy alongside GA Smart Building, Crédit Agricole Immobilier, and Equinox.
• EquilissupportingStrategic or Co-development PartnerPartner for Omega Valbonne project: transformation of former hotel into social student residence with 104 affordable student housing units in Sophia Antipolis.
• UnicilsupportingStrategic or Co-development PartnerPartner for Omega Valbonne project announcement alongside Equilis, FTI, and GA Smart Building.

Scale indicators7 records

Recent moves8 records

Expansion highlights7 records

Direct peers

• Bouygues Construction: One of France's largest general contractors and a direct competitor to GA in commercial, industrial, and residential off-site/traditional construction. Bouygues Bâtiment (where GA's MD of Renovation, Gilles de Jouvencel, spent 10 years) competes head-to-head on enterprise and institutional projects across France.
• Vinci Construction: Major French and global construction group operating across building, civil engineering, and property development. Comparable to GA in delivering large-scale enterprise campuses and turnkey construction for institutional clients, with a broader geographic footprint.
• Eiffage Construction: French construction group with strong positions in building, energy, and concessions. Competes with GA on large enterprise projects, public-private developments, and increasingly on low-carbon / off-site construction methods for institutional clients.
• Nexity: France's largest residential developer and a GA partner (La Cartoucherie, Toulouse). Nexity is a directly comparable real-estate developer-builder, particularly in residential, and represents both a partner and a competitor in housing and mixed-use developments.
• Kaufman & Broad: Major French for-sale homebuilder active across new-build residential and mixed-use developments. Comparable to GA's residential ambitions (Rooj by GA, La Cartoucherie) and competes for similar land, permits, and institutional residential investors.

Broad incumbents

• Spie: French multi-technical services group providing electrical, mechanical, and energy services to buildings and infrastructure. Comparable as a building services incumbent serving many of the same enterprise and industrial customers as GA, though focused on services rather than new build.
• Saint-Gobain: Global leader in building materials and solutions, supplying many of the same low-carbon, energy-efficient products used in GA's off-site platform. Adjacent competitor with deep R&D in construction decarbonization and a presence across GA's value chain.

Emerging players

• Algeco: European leader in modular and prefabricated buildings for schools, offices, and healthcare. Comparable to GA's Ossabois wood modular business, with a stronger rental/temporary-space focus rather than permanent off-site construction.
• Implenia: Swiss construction and real estate services group with a stated focus on integrated, industrialized, and sustainable construction methods. Comparable to GA as a European peer pursuing off-site and digital construction at scale, though smaller and more concentrated in Switzerland/Germany.

Regional players

• Skanska: Swedish-headquartered construction and development group with strong sustainability positioning and off-site/modular initiatives. Comparable as a low-carbon, large-project builder serving enterprise and public-sector clients, but operating primarily in Nordic/US rather than France.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube-nocookie.com/embed/wH7J5XcfKxI
• LinkedInlinkedin.com/company/amandineguillaume
• Xx.com/GroupeGA

Compliance18 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles13 records

Subsidiaries4 records

Funding overview

Funding rounds1 record

Investors1 record

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 GA Smart Building