Bbg BERLINER BUILDING COOPERATIVE

Cooperative Housingbbg-eg.de

Bbg Berliner Baugenossenschaft eG is Berlin's oldest existing housing cooperative (founded 1886), providing long-term rental housing across 100+ residential locations in Berlin and Michendorf to a member-owned community, with a digital member portal, mobile app, and guest apartment services.

Company typePrivate
Founded1886
HeadquartersBerlin, Germany
Headcount11–50
GTM typeB2C
OfferingServices

What Bbg BERLINER BUILDING COOPERATIVE does

Bbg Berliner Baugenossenschaft eG is a member-owned housing cooperative (eingetragene Genossenschaft) founded in 1886, recognized as Berlin's oldest existing Baugenossenschaft. The cooperative provides long-term rental housing across more than 100 residential locations (Wohnanlagen) in Berlin and Michendorf to a membership that includes families, seniors, singles, and multi-generational households. Its service portfolio is built around a digital member ecosystem comprising the KARL web-based member portal (operated by Aareon Deutschland GmbH, with Keycloak authentication), a React Native-based mobile member app with photo-enabled damage reporting, and a guest apartment booking system powered by anny GmbH with Stripe payment processing. Supporting services include community rooms (Gemeinschaftsräume such as Beren-Treff, Machon-Eck, Scheffel-Treff, Spielnest, and Treffpunkt Ortolanweg), a 24-hour damage reporting service, a quarterly member magazine ('echt bbg'), and a whistleblower/compliance system (FS-PP BKMS) operated by external counsel. Internal operations run on Microsoft 365, with Matomo for web analytics and Borlabs Cookie for consent management.

Revenue is generated through a subscription-style cooperative model: members acquire Genossenschaftsanteile (cooperative shares) and pay monthly housing fees (Mietzahlungen), with supplementary transaction revenue from guest apartment rentals and community space bookings. GTM is primarily community-led, leveraging 140 years of brand heritage, member referrals, community events, and direct member acquisition via the website, physical office at Lorenzweg 5 (Berlin-Tempelhof), and on-site caretakers (Hauswarte). The cooperative celebrated its 140th anniversary in 2026 with a major website relaunch, a new brand identity, and the '140 gute Taten' (140 good deeds) initiative. Ownership is collective among members, with a dual-Vorstand led by Commercial Board Member Kerstin Kirsch (reappointed April 2025); statutory audit is performed by BBU Verband Berlin-Brandenburgischer Wohnungsunternehmen e.V. The company is privately held, has no parent-subsidiary structure, no venture or private equity backing, and is not listed.

Bbg BERLINER BUILDING COOPERATIVE firmographics

Firmographics

Name: Bbg BERLINER BUILDING COOPERATIVE
Legal name: bbg Berliner Baugenossenschaft eG
Website: https://bbg-eg.de
Company type: Private
Founded year: 1886
Operating status: Operating
Headcount range: 11–50 employees
Short description: Bbg Berliner Baugenossenschaft eG is Berlin's oldest existing housing cooperative (founded 1886), providing long-term rental housing across 100+ residential locations in Berlin and Michendorf to a member-owned community, with a digital member portal, mobile app, and guest apartment services.
Ownership category
akta.pro rank

Bbg BERLINER BUILDING COOPERATIVE industry classification

Industry

Product category: Cooperative Housing
NAICS: Rooming and Boarding Houses, Dormitories, and Workers' Camps (7213), Rooming and Boarding Houses, Dormitories, and Workers' Camps (72131)
SIC: Services-To Dwellings & Other Buildings (7340), Hotels, Rooming Houses, Camps & Other Lodging Places (7000)
akta.pro primary industry: Build-to-Rent (BTR) Community Management (BPAJAFAC)
akta.pro secondary industries: Co-Host / On-the-Ground Operations & Guest Services (BPAJAIAI), Executive Apartments (Corporate Housing) (THAGAEAD)

Keywords

Cooperative housing services
Rental apartments
Member housing management
Guest apartment rentals
Community space rentals

Where Bbg BERLINER BUILDING COOPERATIVE is headquartered

Location

Headquarters

HQ city: Berlin
HQ country: Germany
HQ region: Europe

Offices2 records

Markets served

Bbg BERLINER BUILDING COOPERATIVE business model

Business model

GTM type: B2C
Offering type: Services
Cost components: Personnel, Operations, Infrastructure, Technology or R&D, Marketing or Sales

Revenue model

Housing/Membership Fees: As a housing cooperative, bbg generates revenue through monthly housing fees (Mietzahlungen) from members, membership fees (Genossenschaftsanteile), and potentially additional charges for services like guest apartments, community spaces, and 'Wohnen plus' services.
Guest Apartment Rentals: Furnished guest apartments available for booking by members, generating rental income through the anny booking platform with Stripe payment processing.
Community Space Rentals: Rental of community rooms and spaces (Gemeinschaftsräume) to members for events and gatherings.

Pricing tiers

Model	Billing	Price
Subscription	Monthly	Membership-based housing cooperative

Go-to-market motion2 records

Distribution channels5 records

Marketing channels6 records

Bbg BERLINER BUILDING COOPERATIVE product offering

Product offering

Core offering

bbg Berliner Baugenossenschaft eG is a member-owned housing cooperative that provides long-term rental housing across more than 100 residential locations in Berlin and Michendorf. Members also receive access to digital member services (KARL portal, mobile app, 24/7 damage reporting), furnished guest apartments, and community rooms, all under a cooperative membership model.

Product overview

Bbg Berliner Baugenossenschaft eG operates as a housing cooperative offering a portfolio of member-facing digital services. The core digital infrastructure consists of the KARL Mitgliederportal (web-based) and the Mitglieder-App (mobile), which together provide members access to rental documents, damage reporting, utility information, and personal data management. Supporting services include the Gästewohnungen (furnished guest apartment booking via anny system), Gemeinschaftsräume (community room reservations), and a 24/7 Schadensmeldung (damage reporting) service. The cooperative also provides a Hinweisgebersystem (whistleblower system) with secure reporting via the FS-PP BKMS System, and publishes the echt bbg. member magazine. The digital ecosystem is built on Aareon Germany infrastructure for member management, with Keycloak authentication, Stripe payment processing for bookings, and Matomo web analytics. The cooperative celebrated its 140th anniversary in 2026 with a major website relaunch and the '140 gute Taten' initiative.

Differentiator

Problem solved

Functional benefit

Products and services

KARL Mitgliederportal (Member Portal) Web-based self-service portal for cooperative members providing access to rental contract documents and data, utility cost information, damage/malfunction reporting, and personal data management. Operated on Aareon Deutschland infrastructure with Keycloak authentication.
Mitglieder-App (Member Mobile App) Native iOS/Android mobile application for cooperative members, providing access to housing services, damage reporting with photo upload, push notifications, biometric authentication, and document access. Built with React Native, Expo SDKs, and Firebase Cloud Messaging.
Gästewohnungen (Guest Apartments) Furnished guest apartments available to cooperative members for short-term rental, used for visiting family and friends or transitional stays. Managed through the anny web-based booking system with Stripe payment processing.
Gemeinschaftsräume (Community Rooms) Community rooms available for member use, including Beren-Treff (Reinickendorf), Machon-Eck (Mariendorf), Scheffel-Treff, Spielnest, and Treffpunkt Ortolanweg, used for events, meetings, workshops, and community activities.
Schadensmeldung (Damage Reporting Service) 24-hour damage and malfunction reporting service for members, accessible via the KARL Mitgliederportal, mobile app, or by contacting on-site building supervisors (Hauswarte) during business hours.
Hinweisgebersystem / Compliance Meldestelle (Whistleblower System) Confidential whistleblower and compliance reporting desk operated by external law firm FS-PP Berlin (Dr. David Albrecht and Sophia Hoffmeister), using the FS-PP BKMS System for secure anonymous reporting of corruption, fraud, bribery, and other legal violations.
Wohnanlagen (Residential Housing Portfolio) Portfolio of more than 100 residential locations across Berlin and Michendorf providing long-term rental housing to cooperative members, displayed via an interactive property map on the website.
Downloadcenter Digital resource library providing downloadable documents, forms, and informational materials for cooperative members.

Companies that use Bbg BERLINER BUILDING COOPERATIVE

Customer profile

Segments3 records

Ideal customer profiles2 records

Bbg BERLINER BUILDING COOPERATIVE technology and API

Technology

Technology focussed No

API detail

Has API: No
API docs
API detail

Core technology

AI maturity

App detail

Integration10 records

Feature5 records

Bbg BERLINER BUILDING COOPERATIVE partnerships and signals

Strategic signal

Partnerships

Eight partnerships are on record, tiered core and minor.

BBU Verband Berlin-Brandenburgischer Wohnungsunternehmen e. V.coreOthersStatutory audit association (Prüfungsverband) responsible for conducting mandatory financial audits of the cooperative as required by German cooperative law (Genossenschaftsgesetz). Located at Lentzeallee 107, 14195 Berlin.
FS-PP Berlin (Law Firm)coreImplementation/ SI/ Consulting PartnerExternal compliance management system and whistleblowing hotline. Attorneys Dr. David Albrecht and Sophia Hoffmeister handle confidential reports of legal violations, corruption, and fraud via the FS-PP BKMS system.
Aareon Deutschland GmbHcoreTechnology or IntegrationIT service provider operating the KARL member portal infrastructure from their data center in Mainz. Provides web-based housing management services.
anny GmbHcoreTechnology or IntegrationOperates the guest apartment booking system for members, including reservations, availability management, and booking confirmations.
Stripe Payments Europe LimitedcoreTechnology or IntegrationPayment processing for guest apartment bookings, handling online payments with infrastructure in the USA.
Microsoft (Microsoft Ireland Operations Limited, Microsoft Corporation)coreTechnology or IntegrationLicensed Microsoft 365 products for internal communications and collaboration including Teams, email, and document management.
ISTAF IndoorminorGTM or Marketing PartnerPartnership with ISTAF Indoor athletics event, with approximately 12,000 fans attending, many being bbg members.
Margareta-Spettmann-VereinminorOthersCharitable association benefiting from the '140 gute Taten' anniversary book donations (7.50 Euro per book).

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Bbg BERLINER BUILDING COOPERATIVE competitors and assessment

Company assessment

Direct peers

degewo AG: Berlin municipal housing company managing over 75,000 apartments. Comparable in scale, Berlin market focus, and member-facing digital services.
GESOBAU AG: Berlin housing company with approximately 45,000 units. Directly comparable Berlin residential property manager with similar community and member-service focus.
HOWOGE Wohnungsbaugesellschaft mbH: Berlin municipal housing company managing approximately 74,000 apartments. Direct peer in Berlin residential property management with overlapping member/renter services, digital portals, and community offerings.
Gewobag Wohnungsbau-Aktiengesellschaft Berlin: Berlin's largest municipal housing company with roughly 67,000 units. Directly comparable in residential property management, member services, and community programming within the Berlin market.
Berlinovo GmbH: Berlin state-owned housing company with a portfolio of over 25,000 apartments. Comparable Berlin residential operator with similar community and tenant service programs.
Wohnungsbaugenossenschaft 'Märkische Scholle' eG: Long-established Berlin housing cooperative (founded 1921) with comparable member-owned governance, community focus, and apartment rental services in the Berlin market.

Broad incumbents

Deutsche Wohnen SE: Major German residential property company with significant Berlin exposure. Comparable in residential rental operations and digital tenant engagement at much larger scale.
Vonovia SE: Europe's largest residential real estate company with ~540,000 units across Germany and Austria. Broader incumbent in the same residential rental space with overlapping digital tenant services.
LEG Immobilien SE: German residential real estate company with ~166,000 units, primarily in North Rhine-Westphalia. Broader incumbent in German residential rental with overlapping digital member/tenant services.

Others

BBU Verband Berlin-Brandenburgischer Wohnungsunternehmen e.V. Industry association representing Berlin-Brandenburg housing companies. Relevant as bbg's statutory audit partner (Prüfungsverband) and as the ecosystem body setting cooperative housing standards.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

Bbg BERLINER BUILDING COOPERATIVE compliance and trust

Trust signal

Compliance2 records

Bbg BERLINER BUILDING COOPERATIVE financial estimates

Financial estimate

Revenue estimate

Valuation estimate

Bbg BERLINER BUILDING COOPERATIVE leadership team

Management profile

Number of profiles

Profiles2 records

Bbg BERLINER BUILDING COOPERATIVE funding detail

Funding detail

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

Bbg BERLINER BUILDING COOPERATIVE M&A and investment

M&A and investment

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Bbg BERLINER BUILDING COOPERATIVE

What does Bbg BERLINER BUILDING COOPERATIVE do?

Is Bbg BERLINER BUILDING COOPERATIVE a public or private company?

Bbg BERLINER BUILDING COOPERATIVE is a private company. It is classified as management employee owned and is currently operating.

When was Bbg BERLINER BUILDING COOPERATIVE founded?

Bbg BERLINER BUILDING COOPERATIVE was founded in 1886. It employs 11 to 50 people.

Where is Bbg BERLINER BUILDING COOPERATIVE based?

Bbg BERLINER BUILDING COOPERATIVE is headquartered in Berlin, Germany, in the Europe region.

How does Bbg BERLINER BUILDING COOPERATIVE make money?

Three revenue lines are on record. Housing/Membership Fees are the primary driver. The others are guest Apartment Rentals and community Space Rentals.

Who are Bbg BERLINER BUILDING COOPERATIVE's main competitors?

Direct peers on record are degewo AG, GESOBAU AG, HOWOGE Wohnungsbaugesellschaft mbH, Gewobag Wohnungsbau-Aktiengesellschaft Berlin, Berlinovo GmbH and Wohnungsbaugenossenschaft 'Märkische Scholle' eG. Broad incumbents are Deutsche Wohnen SE, Vonovia SE and LEG Immobilien SE. BBU Verband Berlin-Brandenburgischer Wohnungsunternehmen e.V. is listed as an others.

Does Bbg BERLINER BUILDING COOPERATIVE have an API?

No public API is recorded for Bbg BERLINER BUILDING COOPERATIVE.

What industry is Bbg BERLINER BUILDING COOPERATIVE in?

Bbg BERLINER BUILDING COOPERATIVE's product category is Cooperative Housing. Its primary akta.pro industry code is BPAJAFAC, Build-to-Rent (BTR) Community Management, with a secondary code of BPAJAIAI, Co-Host / On-the-Ground Operations & Guest Services. Its NAICS code is 7213 and its SIC code is 7340.