SAS 3B

What SAS 3B does

SAS 3B is an independent French real estate developer (Société par Actions Simplifiée) founded in 2000 by Bettina and Georges Bousleiman and headquartered in Strasbourg. The company specialises in urban land development (aménagement foncier) and real estate promotion across the Grand Est region of France, encompassing Alsace, Lorraine, and Champagne. Its portfolio spans new-build residential apartment programmes sold off-plan under the French VEFA system (Vente en État Futur d'Achèvement), serviced land subdivisions (lotissements), mixed-use developments with retained commercial inventory, and selective property trading (marchand de biens). End customers include individual owner-occupiers, buy-to-rent and tax-incentivised investors (LMNP, Pinel+, LLI), social housing providers, and commercial tenants.

The company's technical differentiators are domain-based rather than platform-based. 3B pioneered the conversion of industrial brownfield sites into eco-neighbourhoods in the Grand Est — beginning with the Émailleries Alsaciennes site in Hoenheim (2000) — and has been an early mover on stringent French energy standards, delivering the region's first BEPAS and BEPOS buildings (2012–2013) and Strasbourg's first passive building, Le Carré d'Art (<15 kWh/m²/year). All active programmes comply with RE 2020 thresholds (2025), and current projects incorporate biomass district heating, hybrid heat pumps, geothermics, and home automation. Design quality is delivered through collaborations with established architectural firms (Jouin Manku, Rey Lucquet & Associés, Alexandre CHEMETOFF, Patrick Schweitzer Architecte) and French artisanal suppliers designated Entreprises du Patrimoine Vivant and Meilleurs Ouvriers de France. Unit prices range from approximately €119,200 (studios) to over €448,000 (5-room), positioning 3B in the mid-to-upper premium residential segment.

SAS 3B operates without external financing, construction, or influence groups. Revenue is generated primarily through one-off unit sales on project completion under VEFA, supplemented by recurring rental income via the wholly-owned investment subsidiary Foncière 3B, which holds and leases commercial and office space within mixed-use developments (e.g., PwC at StrasCoop). Distribution is direct: physical sales offices at each project site (Hagondange, Vendenheim), three regional sales agencies (Strasbourg HQ, Nancy, Lesquin/Lille), a property-search portal on sas-3b.net, and an active €1,000-per-referral parrainage programme. The company has a stated capital of €158,500 and 11–50 employees, consistent with a lean, project-financed operating model.

Name

SAS 3B

Legal name

SAS 3B

Website

https://sas-3b.net

Company type

Private

Founded year

2000

Operating status

Operating

Headcount range

11–50 employees

Short description

SAS 3B is an independent French real estate developer founded in 2000, designing and building premium residential and mixed-use properties in the Grand Est region. It serves owner-occupiers, investors, social housing providers, and commercial tenants via direct off-plan sales and its investment subsidiary Foncière 3B.

Ownership category

akta.pro rank

Headquarters

HQ city

Strasbourg

HQ country

France

HQ region

Europe

Offices4 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

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

Revenue model

1. New residential property sales (VEFA - Vente en État Futur d'Achèvement): SAS 3B generates the majority of its revenue from the sale of new-build residential units (apartments and houses) directly to end-buyers under France's VEFA off-plan system. Properties are sold across price points from approximately €119,200 (studios) to over €448,000 (5-room units). Some units are sold to social housing providers (e.g., 53 of 82 units at Belles Rives Ilot A were sold to social landlords). This is a one-time revenue stream per unit.
2. Land development and plot sales (lotissements): 3B acts as a land developer (aménageur foncier), purchasing, planning, and servicing land parcels before selling ready-to-build plots to individual homeowners. Projects include Lotissement Obermuehle (29 lots), Lotissement Les Tilleuls (26 lots), Lotissement Bonne Espérance (53 lots), and Lotissement Le Wingertsfeld (38 lots). Revenue is one-time per plot.
3. Commercial and business premises leasing (Foncière 3B): Through its investment subsidiary Foncière 3B, the company holds and leases commercial and office spaces within its mixed-use developments. For example, PwC occupies office space at StrasCoop (10,000 m² of business premises). This generates recurring rental income.
4. Property trading (Marchand de biens): 3B purchases, rehabilitates, and resells existing buildings for profit. Examples include Villa Monhi in Nice (renovation of a historic mansion, 2010), Nice centre-ville (rehabilitation of 12 units), and Villa Victor Hugo Paris 16ème (sold 2013). Revenue is one-time per transaction.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

SAS 3B is a real estate promoter and urban land developer that plans, builds, and sells new residential apartment programmes (under the French VEFA off-plan system) and serviced land plots (lotissements) in the Grand Est region of France. The company converts industrial brownfields into eco-neighbourhoods and develops mixed-use projects combining housing, commercial premises, and offices, with an emphasis on energy-efficient construction (RE 2020, BEPAS, BEPOS standards) and architectural quality through collaboration with renowned architects. It also holds and leases commercial space via its investment subsidiary Foncière 3B.

Product overview

SAS 3B is a real estate developer operating in the Grand Est region of France, founded in 2000 by Bettina and Georges Bousleiman. The company offers new residential apartment programs (Résidence ANGO, La Résidence Emergence, Résidence Sakura, Entre Vignes et Golf, Square VendHome, L'Elégance), student housing (Les Studios Emergence), and operates through its investment subsidiary Foncière 3B. The portfolio spans across Alsace, Lorraine, and Champagne regions, with current active programs in Strasbourg, Hagondange, Tinqueux, Bezannes, Vendenheim, and Nancy. The company also maintains a showcase property in Paris (Maison 3B Paris) to demonstrate its architectural expertise.

Differentiator

Problem solved

Functional benefit

Brands

• Maison 3B Paris: Showcase property in Paris displaying 3B's craftsmanship and design excellence, featuring interior design by Patrick Jouin and Sanjit Manku in a Haussmannian building
• Foncière 3B

Products and services

• Résidence ANGO New residential development in Hagondange (Moselle) comprising two buildings ("Le Metz" and "Le Voltaire") with 52 total apartments from 2 to 4/5 rooms and ground-floor commercial space; RE 2020 (2025 threshold) compliant with hybrid heat-pump floor heating; prices from €174,800.
• Les Studios Emergence Student housing residence in Strasbourg offering 51 studios and 2-room apartments (17.2 m² to 36.5 m²) in full ownership, eligible for LMNP (non-professional furnished rental) investor status; prices from €119,200.
• La Résidence Emergence High-end residential tower in Strasbourg featuring 1- to 6-room apartments (39.3 m² to 88.1 m²) with views of the Black Forest, Vosges, and Strasbourg Cathedral; includes underground parking and urban heating system; prices from approximately €239,400; delivery Q4 2028.
• Résidence Sakura New residential development in Tinqueux (Grand Parc eco-district, near Reims) of 2- to 5-room apartments with DPE A energy rating; RE 2020 (2025 threshold) compliant and eligible for the LLI (intermediate rent) tax device; prices from €194,100.
• Entre Vignes et Golf New residential development in Bezannes (near Reims) of 6 small buildings ranging from studios to 5-room apartments with views over Reims-Bezannes golf course; low-carbon materials, DPE A rated, Pinel+ eligible and eligible for TVA 5.5%; prices from approximately €155,500 (starters) to €339,400.
• Square VendHome New residential development in Vendenheim (Strasbourg area) within a private park along the canal, offering studios to 5-room apartments (T2 from €221,000, T3 from €306,700, T4 from €341,900, T5 from €481,400); Class C energy rating with district-network heating (51% biomethane).
• Foncière 3B Wholly-owned investment subsidiary of SAS 3B that invests in housing, commercial premises, and offices within the group's developments, providing financial leverage for project realisation (e.g., leasing office space to PwC France at StrasCoop).
• Maison 3B Paris Exceptional showcase property in Paris (Haussmannian apartment with interior design by Patrick Jouin and Sanjit Manku) demonstrating the group's expertise in architecture, design, and craftsmanship; functions as a meeting and reflection space for key real-estate stakeholders.

Quantifiable outcome

• First BEPAS and BEPOS residential buildings delivered in the Grand Est region (2012–2013)
• +4 more outcomes

Named customers3 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

Five partnerships are on record, tiered flagship, core and minor.

• Jouin Manku (Patrick Jouin & Sanjit Manku)flagshipStrategic or Co-development Partner3B commissioned the renowned design duo Patrick Jouin and Sanjit Manku to design the interior architecture of the Maison 3B Paris showroom, a Haussmannian apartment in central Paris. Jouin Manku also designed the lobby and common areas of La Cour des Haras in Strasbourg. This collaboration establishes 3B's premium positioning and attracts high-profile clients and media attention.
• Entreprises du Patrimoine Vivant de l'Est de la France (Living Heritage Companies of Eastern France)coreStrategic or Co-development Partner3B collaborates with French companies designated as Entreprises du Patrimoine Vivant (Living Heritage Companies) in eastern France, as well as Meilleurs Ouvriers de France artisans, for the construction and finish work in its premium projects (e.g., Maison 3B Paris). These partners supply noble materials (wood, stone, leather, cast iron, marble, glass) crafted with exceptional precision for interior finishes.
• SPL Deux-Rives (Société Publique Locale)coreStrategic or Co-development Partner3B was selected by the City of Strasbourg and SPL Deux-Rives as the developer for the landmark 'Émergence' project, a flagship urban renewal initiative in Strasbourg's Wacken-Europe district. 3B was awarded the project for its commitment to reinterpreting Rhineland architectural codes, making it a key public-private partnership in the company's portfolio.
• CAUE du Bas-Rhin (Conseil d'Architecture, d'Urbanisme et de l'Environnement)coreStrategic or Co-development Partner3B partnered with CAUE du Bas-Rhin for the Parc de Lamper eco-neighbourhood development, a 264-lot sustainable subdivision in Lampertheim. CAUE contributed urban planning expertise and environmental compliance guidance, reinforcing the project's ecological credentials.
• PwC FranceminorOthersPwC occupies office space in the renovated StrasCoop building, managed by Foncière 3B. This is a landlord-tenant relationship rather than a strategic partnership, but it demonstrates 3B's ability to attract blue-chip corporate tenants to its mixed-use developments.

Scale indicators6 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Altarea (Cogedim): French listed real estate group operating the Cogedim residential brand; develops new-build housing and mixed-use projects nationally, including in Grand Est, with a comparable premium positioning through its Cogedim brand — overlaps directly with SAS 3B's core VEFA business.
• Kaufman & Broad: National French homebuilder focused on apartments and houses for first-time buyers and investors; competes with SAS 3B's investor-targeted studios and LMNP/Pinel-eligible programmes across regions, offering similar unit configurations at comparable price points but with national scale.
• Eiffage Immobilier: Residential property arm of the Eiffage construction group; develops new-build housing and mixed-use projects across France including eastern regions, with vertically integrated construction capabilities that compete with SAS 3B on both pricing and delivery reliability.
• Vinci Immobilier: Residential and commercial property developer within the Vinci group; develops new-build residential, serviced residences, and mixed-use projects across France including Strasbourg, with national capital and brand recognition that compete head-to-head with SAS 3B's premium positioning.
• Nexity: France's largest residential property developer and a broad incumbent in the same market — competes with SAS 3B across the new-build apartment segment and offers integrated services (development, services, gestion), providing the national benchmark for scale, capital, and pricing against which 3B competes regionally.
• Bouygues Immobilier: Major French residential developer within the Bouygues group, active across all metropolitan regions including Grand Est; competes with SAS 3B on new-build apartments and mixed-use developments with substantially greater capital, marketing, and land-acquisition resources.

Direct peers

• Groupe Réalités: French regional real estate developer with a comparable mid-to-premium positioning across western and central France; operates an investment subsidiary and emphasizes energy-efficient, design-led residential and mixed-use developments similar to SAS 3B's approach in the Grand Est.
• Quartus: French real estate developer with multi-regional activity in residential, mixed-use, and serviced residences; competes with SAS 3B on new-build premium apartments and shared-aménity residential projects, with comparable focus on urban renewal and energy-efficient construction.
• Cardinal Edition: French real estate developer focused on sustainable, architecturally distinctive residential and mixed-use projects; shares SAS 3B's emphasis on energy performance, design-led development, and engagement of renowned architects, positioning it as a strong peer in the premium sustainable segment.
• Edouard Denis: French residential developer focused on high-quality new-build apartments and houses with a comparable regional multi-city footprint; competes with SAS 3B on premium apartment segments and shares a similar emphasis on architectural quality and amenitized residential projects.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks7 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/sas-3b

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

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 SAS 3B