SOZIALBAU AG

Name

SOZIALBAU AG

Legal name

SOZIALBAU gemeinnützige Wohnungsaktiengesellschaft

Website

https://sozialbau.at

Company type

Private

Founded year

1954

Operating status

Operating

Headcount range

11–50 employees

Short description

SOZIALBAU AG is Austria's largest non-profit housing company, managing 55,776 rental and ownership apartments in Vienna through innovative energy systems and the 'gemeinsam stärker' community platform serving 54,000 residents.

Ownership category

akta.pro rank

Product category

Affordable Housing & Residential Property Management

NAICS

Residential Property Managers (531311), Real Estate Property Managers (53131), Lessors of Nonresidential Buildings (except Miniwarehouses) (531120)

SIC

Operators Of Apartment Buildings (6513), Real Estate Agents & Managers (For Others) (6531), Real Estate Operators (No Developers) & Lessors (6510)

akta.pro primary industry

Multifamily Apartment Property Management (BPAJAFAA)

akta.pro secondary industry

Association Maintenance, Vendor & Capital Project Management (BPAJAHAM)

Keywords

• Affordable rental housing
• Non-profit property management
• Residential real estate services
• Housing cooperative management
• Community housing programs

Headquarters

HQ city

Vienna

HQ country

Austria

HQ region

Europe

Offices4 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

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

Revenue model

1. Rental income from managed apartments: SOZIALBAU AG generates the majority of its revenue from renting approximately 55,776 subsidized and market-rate apartments to tenants in Vienna. As a non-profit housing provider, rents are regulated and based on affordability principles. Rental income also includes ancillary costs and parking space rental.
2. Commercial property rental: Revenue from renting commercial spaces, offices, and retail units in ground-floor locations across housing complexes. Commercial tenants include businesses, healthcare providers, childcare facilities, and service providers.
3. New build apartment sales/allocation: Revenue from allocating newly constructed apartments. Around 500-1,000 new build apartments are allocated per year. Projects in planning or construction include 1,259 apartments currently under construction with 97 million EUR in annual construction investment.
4. Community platform services and member benefits: 'gemeinsam stärker' platform generates value through member card discounts, partner commissions, and service referrals. Members receive benefits and discounts from partner retailers and service providers through the community platform.

Pricing tiers

Go-to-market motion3 records

Distribution channels5 records

Marketing channels6 records

Core offering

SOZIALBAU AG is Austria's largest non-profit housing association, managing 55,776 rental and ownership apartments across more than 600 buildings in Vienna. It provides affordable subsidized and market-rate rental housing, commercial property leasing, and integrated community services through the 'gemeinsam stärker' platform. The company also pioneers energy-efficient building technologies including anergy networks, serial renovation, facade tempering, and large-scale photovoltaic installations.

Product overview

SOZIALBAU AG is Austria's largest non-profit housing association managing 55,776 rental and ownership apartments. The company operates a multi-faceted housing platform combining subsidized rental housing, ownership options, and comprehensive community services. Core offerings include energy-efficient building management with innovative systems (Energiezentrale, Photovoltaik, Anergienetze), e-mobility services (E-Carsharing, E-Transporters, E-Charging), and the digital 'gemeinsam stärker' community platform. Additional services span resident support (Bewohnerservice, SOBIS), community building programs (Wohn-Buddy, urban gardening, art initiatives), and sustainability reporting. The portfolio includes new construction projects, thermal renovation, and various housing-related services coordinated through internal systems and the customer magazine 'hauspost'.

Differentiator

Problem solved

Functional benefit

Brands

• gemeinsam stärker: Online community platform providing services including apartment exchange, childcare/elderly care services, guest apartments, E-mobility, events, and neighborhood help marketplace for 54,000 residents.
• SOBIS
• frei.heraus

Products and services

• Subsidized Rental Housing Income-based regulated rental apartments for Austrian households qualifying for non-profit housing. Rents are kept low based on affordability principles and housing regulations under Austrian non-profit housing law. Tenants benefit from lifetime tenancy rights and access to the full gemeinsam stärker community ecosystem.
• Free-financed Rental Apartments Market-rate apartments within non-profit housing complexes. Rents are higher than subsidized units but below private market rates. Approximately 1,600 apartments are planned across 10 projects.
• New Build Apartment Allocation Allocation of newly constructed apartments in SOZIALBAU developments. Around 500-1,000 new build apartments are allocated per year, drawn from a portfolio of 1,259 apartments currently under construction.
• Haus Haidehof Senior Care Housing Senior living and nursing home project in Simmering with 280 care places operated by 'Häuser zum Leben' and approximately 100 subsidized apartments. Combines integrated care services with affordable housing.
• Commercial Property Leasing Rental of commercial spaces, offices, and retail units in ground-floor locations across housing complexes. Commercial tenants include healthcare providers, childcare facilities, and service businesses. Commercial vacancy rate is under 1%.
• sChanze Commercial Spaces Flexible commercial space offerings for self-employed individuals, freelancers, and creatives in the 'An der Schanze' residential quarter in Floridsdorf. Part of a larger development with about 1,400 apartments, student housing, and community facilities.
• Grätzl-E-Carsharing Community e-car sharing service with 10 mobility points across Vienna. Each Mobility Point offers one electric vehicle and 10 E-charging stations. Part of the 'gemeinsam mobil' (together mobile) community program.
• E-Transporter Rental Two electric transporter vehicles available for €10/day for community members via the 'gemeinsam stärker' platform. Located in south and north Vienna, powered by solar electricity. Reservable through the community platform for resident moves and purchases.
• gemeinsam stärker Community Platform Online platform and app serving as the primary hub for ~54,000 SOZIALBAU residents to access apartment exchange marketplace (SOBIS), social services for elderly and childcare, guest apartments, e-mobility bookings, event registration, gardening plots, and the Member Card discount program.
• Thermal Renovation (Wohnhaussanierung) Thermal renovation service for residential complexes. 262 housing complexes with approximately 17,843 apartments have been thermally improved, achieving average heat demand reduction of 72 kWh per m² per year and annual CO₂ reduction of 36,746 tonnes.
• Wohn-Buddy Program Volunteer program where long-term residents support newly moving neighbors as contacts during their initial period. Helps with integration into the building community. Currently 25 active Wohn-Buddys.
• gemeinsam garteln Urban Gardening Community urban gardening program with approximately 60 active projects in residential complexes. Residents grow vegetables, fruits, and herbs in community gardens. The Nobilegasse 16 garden was awarded the 'Natur im Garten' (Nature in the Garden) plaque.
• Bewohnerservice (Resident Service) Centralized resident service center handling customer inquiries via ticket system. 96% of calls answered within 20 seconds. Over 1 million customer tickets processed since 2006. Connected to contractor database for immediate service dispatch in emergencies.
• Enterprise Development & Construction Management (B2B) Project development and construction management services for partner housing cooperatives within the SOZIALBAU-Verbund (VOLKSBAU, WOHNBAU, FAMILIE, Urbanbau). Key projects include Quartier Breitensee (990 apartments), Schröderingerplatz (150 apartments for WOHNBAU), Sophie 7 (56 apartments for WBV GPA), and 'Dorf am Schafberg' children and family village.

Quantifiable outcome

• Heating energy demand reduced by 72 kWh/m² per year through thermal renovation
• +8 more outcomes

Named customers5 records

Segments5 records

Ideal customer profiles6 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

20 partnerships are on record, tiered core and minor.

• Multiple property owners in Simon-Denk-Gasse areacoreStrategic or Co-development Partner · 17 December 2025Five property owners in the Simon-Denk-Gasse, Marktgasse, and Malzgasse area signed a near-heating network agreement led by WOHNBAU and managed by SOZIALBAU AG. This cross-property decarbonization project covers 100 apartments and is the largest near-heating network in existing stock in Vienna.
• Wohnfonds WiencoreStrategic or Co-development Partner · 12 November 2025Wohnfonds Wien is Vienna's housing development fund and a key public partner. It sponsors the serial renovation pilot (RENVELOPE project) and has designated multiple SOZIALBAU projects as showcase initiatives in the city's 'Raus aus Gas' program.
• driendl*architectsminorImplementation/ SI/ Consulting Partner · 19 December 2024Architecture firm and co-developer of the 'Dorf am Schafberg' project with VOLKSBAU and the Austrian Children's Villages.
• Büro KaindlminorImplementation/ SI/ Consulting Partner · 19 December 2024Architecture firm and co-developer of the 'Dorf am Schafberg' project with VOLKSBAU and the Austrian Children's Villages.
• WOHNBAU (Wohnungsgenossenschaft)coreStrategic or Co-development Partner · 15 October 2024WOHNBAU is a partner housing cooperative within the SOZIALBAU-Verbund. SOZIALBAU AG won a developer competition on behalf of WOHNBAU to build ~150 subsidized rental apartments at Schrödingerplatz in Vienna's Donaustadt. SOZIALBAU also manages the near-heating network (Anergienetz) in the Simon-Denk-Gasse for WOHNBAU and provides project development services.
• VOLKSBAU (Wohnungsgenossenschaft)coreStrategic or Co-development Partner · 6 June 2024VOLKSBAU is a core strategic partner within the SOZIALBAU-Verbund of housing cooperatives. SOZIALBAU AG handles project development and construction management for VOLKSBAU properties. Key projects include Quartier Breitensee (990 apartments, with SOZIALBAU building 225 units and managing overall project steering) and the 'Dorf am Schafberg' children and family village project. VOLKSBAU's housing stock is managed within the joint cooperative group.
• Urban Innovation ViennaminorStrategic or Co-development Partner · 1 September 2022Urban Innovation Vienna supported the implementation of the Grätzl e-mobility project, which won the city's incentive prize for innovative, energy-efficient mobility in housing. The organization facilitated project rollout across 10 Vienna locations.
• FAMILIE GenossenschaftcoreStrategic or Co-development Partner · 1 January 2019FAMILIE is a housing cooperative within the SOZIALBAU-Verbund. SOZIALBAU AG manages renovation and innovation projects for FAMILIE's properties, including the facade tempering pilot at Große Neugasse 25 and the 'Raus aus Gas' Barawitzkagasse project. Both projects are designated as showcase projects in Vienna's decarbonization program.
• Urbanbau GmbHcoreStrategic or Co-development PartnerUrbanbau GmbH is one of the six housing companies connected to SOZIALBAU AG through a care agreement, all of which have committed to the Corporate Governance Code for Non-Profit Building Associations. Urbanbau owns the BIG POINT/Center Hetzendorf development (312 apartments, 8,000 m² office, 4,000 m² shopping).
• Neuland GmbHminorStrategic or Co-development PartnerNeuland GmbH is one of six housing companies bound to SOZIALBAU AG via care agreement under the Corporate Governance Code for Non-Profit Building Associations.
• Volksbau Gen.m.b.HminorStrategic or Co-development PartnerVolksbau Gen.m.b.H is one of six housing companies bound to SOZIALBAU AG via care agreement under the Corporate Governance Code for Non-Profit Building Associations.
• Vindobona Gen.m.b.HminorStrategic or Co-development PartnerVindobona Gen.m.b.H is one of six housing companies bound to SOZIALBAU AG via care agreement under the Corporate Governance Code for Non-Profit Building Associations.
• ÖGUT (Österreichische Gesellschaft für Umwelt und Technik)coreStrategic or Co-development PartnerÖGUT is the Austrian Society for Environment and Technology, a key research and policy partner in SOZIALBAU's energy projects. ÖGUT co-developed the anergy network in the Grätzl Miesbachgasse/Leopoldsgasse area and awarded SOZIALBAU the Environmental Prize 2022 for the Energiezentrale project.
• TU Wien (Vienna University of Technology)coreTechnology or IntegrationTU Wien is a research partner in SOZIALBAU's energy innovation projects, including the anergy network research project in the 2nd district and the RENVELOPE project for serial renovation. Academic research partnerships provide scientific credibility and methodology support.
• Wiener Institute für Building ResearchminorStrategic or Co-development PartnerResearch partner in the facade tempering (Fassadentemperierung) pilot project at Große Neugasse 25, which investigates building skin-based heating and cooling systems.
• HOB (Hausservice Objektbewirtschaftungs GmbH)coreImplementation/ SI/ Consulting PartnerHOB is a commercial subsidiary of the SOZIALBAU-Verbund providing IT services, facility management, and smart building technology (ESB digital notice boards, SMAT TV systems, fiber networks). HOB also trains apprentices, with one winning 2nd place in the Austrian 'Kann Was!' trade competition in 2025.
• Stadt Wien (City of Vienna)coreStrategic or Co-development PartnerThe City of Vienna is a fundamental strategic partner through its housing policy framework, housing subsidies, and land allocation. The city designated SOZIALBAU's energy projects as showcase models for the 'Raus aus Gas' program and '100 Projekte Raus aus Gas' initiative.
• Wiener Volkshochschulen (VHS)minorChannel Partner/ Reseller/ DistributorVHS operates a location within the Sophie 7 urban quarter developed by SOZIALBAU, providing adult education services to residents and the local community.
• Häuser zum LebencoreChannel Partner/ Reseller/ DistributorHäuser zum Leben leases the 'Haus Haidehof' senior living facility (280 care places) from SOZIALBAU AG in Simmering. SOZIALBAU developed the property, and Häuser zum Leben operates the care services.
• Partner retailers and service providers (Member Card program)minorGTM or Marketing PartnerVarious retail partners offer discounts and special rates to SOZIALBAU residents holding the 'gemeinsam stärker' Member Card. Benefits include reduced prices at furniture stores, theaters, cabarets, museums, and other cultural venues.

Scale indicators15 records

Recent moves7 records

Expansion highlights6 records

Broad incumbents

• Vonovia SE: Europe's largest residential real estate company managing ~550,000 apartments across Germany, Austria, and Sweden. Comparable on residential property management scale and energy renovation initiatives, though for-profit and much larger.
• BUWOG Group: One of Austria's leading residential property developers and managers with significant Vienna presence. Comparable on property management scale and energy-efficient renovation programs, though operates on a for-profit rather than non-profit basis.
• Wiener Wohnen: City of Vienna's municipal housing arm managing approximately 220,000 apartments. Directly comparable as Vienna's largest affordable/social housing provider, though owned by the municipality rather than a non-profit cooperative.

Direct peers

• Gesobau AG: Berlin's largest municipal housing company managing ~75,000 apartments. Directly comparable as a large-scale non-profit residential property manager with comparable tenant services, energy renovation programs, and community engagement focus.
• Neues Leben (Bau- und Siedlungsgenossenschaft): Austrian non-profit housing cooperative with significant Vienna portfolio. Operates under the same gemeinnützige Wohnungswirtschaft framework with comparable subsidy access, tenant base, and capital structure.
• Alpenländische Gemeinnützige Wohnbau- und Siedlungsgenossenschaft: Major Austrian non-profit housing association operating across multiple federal states. Directly comparable as a similarly structured gemeinnützige Bauvereinigung managing tens of thousands of subsidized rental units.
• WBV-GPA (Wohnbauvereinigung für Privatangestellte): Austrian non-profit housing association; mentioned as a co-developer with SOZIALBAU in the Sophie 7 urban quarter. Operates under the same non-profit housing law and serves similar subsidized housing customers in Vienna.
• Wien Süd (Gemeinnützige Wohn- und Siedlungsgenossenschaft): One of Austria's largest non-profit housing cooperatives headquartered in Vienna. Directly comparable to SOZIALBAU as a regulated non-profit housing provider managing tens of thousands of Vienna apartments under similar legal framework.

Others

• IMMOFINANZ AG: Austrian real estate investment company with residential portfolio including the 's IMMO' brand. Adjacent rather than directly comparable - operates as a commercial investor rather than a non-profit housing provider.

Regional players

• Neue Heimat Tirol: Largest non-profit housing association in Western Austria (Tyrol). Comparable business model as gemeinnützige Wohnbau- und Siedlungsgenossenschaft but operates in a different geographic market than SOZIALBAU's Vienna-only focus.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/sozialbau-ag
• Facebookfacebook.com/profile.php

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles11 records

Subsidiaries2 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 SOZIALBAU AG