Semmelhaack

What Semmelhaack does

Semmelhaack (legal entity: Wohnungsbaugesellschaft m.b.H. Th. Semmelhaack) is a privately held, owner-managed German residential and commercial real estate company headquartered in Elmshorn, Schleswig-Holstein. Founded in 1978 by Theodor Semmelhaack, the company operates a portfolio of more than 25,000 residential units and approximately 40 commercial properties distributed across northern and eastern Germany (Schleswig-Holstein, Hamburg, Niedersachsen, Mecklenburg-Vorpommern, Brandenburg, Berlin). Core operations include direct residential rental (apartments, townhouses, single-family homes), commercial property rental (offices, warehouses, logistics, retail), and new construction development. The company also operates more than 45 social care facilities through its wholly-owned subsidiary DSG Deutsche Seniorenstift Gesellschaft, providing integrated housing-and-care solutions across 22 Pflegewohnstifte.

Revenue is generated primarily through recurring monthly rental income across residential and commercial properties, supplemented by tenant fees (security deposits, equalization payments), construction and development revenue from new projects, and care fees from DSG-operated facilities. The company charges no brokerage or commission fees to tenants and operates without third-party intermediaries, instead reaching customers through seven regional sales offices, its own website with an integrated property search portal, and a Premium Partner presence on ImmoScout24. Distribution is supplemented by community engagement (sommerfeste, Nachbarschaftstreffen, dragon boat racing, Azubi-Day) and local sponsorships that drive word-of-mouth referrals within residential communities.

Long-term ownership is secured through the Theodor Semmelhaack Familienstiftung, founded in 2016, which holds significant portions of the real estate portfolio. The business employs approximately 250 people and has pursued a strategic focus on residential real estate since divesting the majority of its commercial and logistics portfolio beginning in 2010. Recent expansion priorities include the Rostock pipeline (3,000+ units planned by 2030), senior-appropriate housing, and selective opportunistic acquisitions such as the Knechtschen Hallen and Radiologie Elmshorn in its home market. Successor-generation leadership under Torben Semmelhaack, who joined in 2019, is responsible for forward-looking housing projects and municipal urban development partnerships.

Name

Semmelhaack

Legal name

Wohnungsbaugesellschaft m.b.H. Th. Semmelhaack

Website

https://semmelhaack.de

Company type

Private

Founded year

1978

Operating status

Operating

Short description

Semmelhaack is a privately held, family-owned German real estate company operating 25,000+ residential units and ~40 commercial properties across northern and eastern Germany, with 45+ social care facilities through subsidiary DSG Deutsche Seniorenstift Gesellschaft.

Ownership category

akta.pro rank

Product category

Residential Property Rental

NAICS

Nursing and Residential Care Facilities (623), Continuing Care Retirement Communities and Assisted Living Facilities for the Elderly (6233), Continuing Care Retirement Communities (623311)

SIC

General Bldg Contractors - Residential Bldgs (1520), Services-Nursing & Personal Care Facilities (8050)

akta.pro primary industry

Senior Living & 55+ Community Brokerage (BPAJAAAH)

Keywords

• Residential property rental
• Commercial real estate leasing
• Senior care facilities
• Property development construction
• Social housing management

Headquarters

HQ city

Elmshorn

HQ country

Germany

HQ region

Europe

Offices9 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

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

Revenue model

1. Residential Property Rental: SEMMELHAACK rents a portfolio of more than 25,000 residential units nationwide directly to tenants. Rental income is the primary revenue stream, with monthly rent payments from tenants in single-family homes, townhouses, and multi-family apartment buildings.
2. Commercial Property Rental: Approximately 40 commercial properties are rented nationwide, including offices, warehouse/storage spaces, logistics facilities, and retail premises (consumer markets). This diversified commercial real estate portfolio generates recurring rental income.
3. Social/Healthcare Facilities: Through its subsidiary DSG Deutsche Seniorenstift Gesellschaft (founded 2006), SEMMELHAACK operates more than 45 social care facilities (stationary elderly care homes) providing residential care services, contributing to revenue through care fees and facility rentals.
4. Tenant Services and Fees: Fees are charged for specific services including security deposits (Kaution) equivalent to three cold rents, and a one-time 'Ausgleichsbetrag' (equalization payment) of €80 upon lease signing. SCHUFA queries are handled free of charge for tenants.
5. Property Development and Construction Services: As a developer and property manager, SEMMELHAACK derives revenue from new construction projects that are held in its own portfolio or sold. The company also constructs public facilities (e.g., police stations for the state of Schleswig-Holstein), schools, and daycare centers.

Pricing tiers

Go-to-market motion3 records

Distribution channels4 records

Marketing channels6 records

Core offering

Semmelhaack is a privately held, family-owned German housing company that develops, owns, and rents residential apartments, commercial properties, and social care facilities directly to end customers. Its nationwide portfolio comprises more than 25,000 residential units across multiple German states, approximately 40 commercial properties (offices, warehouses, logistics, retail), and 45+ stationary elderly care facilities operated through subsidiary DSG Deutsche Seniorenstift Gesellschaft. The company charges tenants no brokerage fees or commissions and handles SCHUFA credit checks in-house.

Product overview

SEMMELHAACK is a housing company operating a multi-product platform centered on apartment and commercial property rentals. The core offering consists of direct residential apartment rentals (Wohnungsvermietung) with over 25,000 units nationwide, commercial property rentals (Gewerbeparks) across approximately 40 locations, and new construction projects (Neubauprojekte). Specialized housing segments include senior-appropriate living (Seniorengerechtes Wohnen) and assisted living (Betreutes Wohnen) for residents aged 60+. The company also operates over 45 social care facilities through its DSG Deutsche Seniorenstift Gesellschaft subsidiary. An online property search portal (Immobiliensuche) enables tenants to find and inquire about available units, while subsidized housing (Öffentlich geförderter Wohnraum) serves income-eligible tenants. Services include property management, maintenance, and tenant support, with no rental fees or commissions charged to tenants.

Differentiator

Problem solved

Functional benefit

Products and services

• Wohnungsvermietung (Residential Apartment Rental) Direct rental of residential apartments to individuals and families nationwide without brokerage fees, commissions, or mandatory tenant-procured SCHUFA queries. The portfolio of more than 25,000 residential units spans studios to multi-bedroom apartments across Schleswig-Holstein, Hamburg, Niedersachsen, Mecklenburg-Vorpommern, Brandenburg, and Berlin, managed through seven regional offices.
• Gewerbeparks (Commercial Property Rental) Rental of commercial real estate including offices, storage spaces, logistics buildings, manufacturing space, and retail premises across approximately 40 commercial properties nationwide, serving businesses of various sizes from startups and artisans to established service providers, retailers, and logistics operators. Office rents range from approximately 248 EUR to 14,900 EUR monthly.
• Neubauprojekte (New Construction Projects) Development and construction of new residential buildings including multi-family houses, row houses, and specialized housing projects (such as the 4-family home with 76 apartments in Brunsbüttel, residential complexes in Tessin, and mother-father-child housing in Malente), as well as public facilities including police stations for the state of Schleswig-Holstein, schools, and daycare centers.
• Seniorengerechtes Wohnen (Senior-Friendly Housing) Age-appropriate and barrier-free rental housing for seniors aged 60 and above, including senior-specific apartments in locations such as Rellingen, Braunschweig, Bonn, and Leipzig, often featuring built-in kitchens and accessibility features. Example: a 2-room senior apartment in Rellingen (60+) priced at 695 EUR/month.
• Betreutes Wohnen (Assisted Living) Supported living arrangements for seniors combining independent residential apartments with optional care and service packages, enabling residents to live independently while accessing necessary support services as their needs evolve.
• Sozialimmobilien (Social Care Facilities) Stationary elderly care facilities and social care real estate operated through wholly-owned subsidiary DSG Deutsche Seniorenstift Gesellschaft, totaling more than 45 social care properties nationwide including 22 Pflegewohnstifte with predominantly single-room offerings in modern buildings.
• Öffentlich geförderter Wohnraum (Publicly Subsidized Housing) Publicly funded affordable housing units available to tenants holding a valid Wohnberechtigungsschein (housing eligibility certificate), maintained permanently in the company's portfolio and offered at rents capped at or below 40% of net household income per consumer protection guidelines. Example: 59.23 m² 2-person subsidized apartment at 393.88 EUR/month cold rent.

Quantifiable outcome

• Block heating power plants (BHKW) achieve up to 90% overall efficiency and significantly reduce CO2 emissions compared to conventional heating systems
• +3 more outcomes

Named customers4 records

Segments6 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Ten partnerships are on record, tiered core and minor.

• DSG Deutsche Seniorenstift GesellschaftcoreStrategic or Co-development Partner · 1 January 2006Founded in 2006 in Hannover, DSG is a wholly-owned subsidiary of SEMMELHAACK. It operates 22 Pflegewohnstifte (residential care homes) nationwide, providing stationary elderly care services. DSG is recognized as a leading operator in German elderly care, distinguished by predominantly single-room offerings and modern buildings according to independent studies. The subsidiary enables SEMMELHAACK to offer integrated housing-and-care solutions.
• Theodor Semmelhaack FamilienstiftungcoreStrategic or Co-development PartnerFounded in 2016, the Theodor Semmelhaack Familienstiftung (family foundation) assumed significant portions of the real estate portfolio and secured the company's long-term continuity and continued operations.
• BFW Landesverband Nord e.V.minorStrategic or Co-development PartnerThe BFW (Bundesverband Freier Immobilien- und Wohnungsunternehmen) Landesverband Nord represents medium-sized real estate companies in Hamburg, Mecklenburg-Vorpommern, and Schleswig-Holstein. SEMMELHAACK is a member, using the association for advocacy toward politics, administration, science, and media.
• SC Potsdam e.V.minorGTM or Marketing PartnerSEMMELHAACK is a sponsor of SC Potsdam e.V., one of the largest sports clubs in the region with over 4,000 members, providing support across multiple sports disciplines.
• Fighting Pirates (Elmshorn American Football)minorGTM or Marketing PartnerSEMMELHAACK has been a long-term Gold Sponsor of the Fighting Pirates, Elmshorn's American football team, supporting youth and amateur sports in the region.
• VodafoneminorGTM or Marketing PartnerVodafone is a DSL/internet partner present in all SEMMELHAACK apartments. Tenants are referred to Vodafone for internet connectivity contracts, with special offers available for residents.
• Kreisfeuerwehrverband PinnebergminorGTM or Marketing PartnerSEMMELHAACK supports the Pinneberg district fire brigade association, which provides 9-seater buses for volunteer fire brigades' social activities, enabling fire safety in the region.
• Yourfirm.de and PRIMAKLIMAminorGTM or Marketing PartnerIn partnership with job portal Yourfirm.de and environmental organization PRIMAKLIMA, SEMMELHAACK plants a tree for every job posting published, demonstrating commitment to environmental sustainability and employer branding.
• Municipalities (Potsdam, Rostock, Halstenbek, and others)coreStrategic or Co-development PartnerSEMMELHAACK acts as a long-term partner to German municipalities for urban development and housing construction. Notable projects include partnership with Rostock for the 'Bündnis für das Wohnen' (housing alliance, signed March 2019), and Halstenbek projects with the State Ministry. The company supports municipal administrations in redesigning urban planning.
• Stadtmarketing Elmshorn (City Marketing)minorGTM or Marketing PartnerSEMMELHAACK actively supports city marketing initiatives in Elmshorn, including the 'City Love' campaign, Open Air Cinema events, and other community activities that enhance the city's appeal and attract residents.

Scale indicators7 records

Recent moves7 records

Expansion highlights6 records

Broad incumbents

• Korian Deutschland (Clariane): European senior care major with ~170+ German care facilities. Largest incumbent in stationary elderly care; comparable to DSG for scale economics, tariff exposure, and caregiver-workforce dynamics.

Direct peers

• Deutsche Wohnen SE: Major Berlin-focused residential landlord with ~150,000 units, now majority-owned by Vonovia. Comparable for urban/suburban rental portfolio management and exposure to German rent regulation.
• Vonovia SE: Germany's largest residential real estate company with ~500,000 units. Directly comparable business model (own-and-rent residential portfolios) at much larger scale; key benchmark for portfolio strategy, regulatory exposure, and capital-structure decisions.
• TAG Immobilien AG: Residential real estate operator with ~85,000 units focused on northern and eastern Germany — directly overlapping Semmelhaack's geographic footprint. Comparable for value-add rental strategy in B-/C-tier German cities.
• LEG Immobilien SE: NRW-focused residential landlord with ~165,000 units. Mid-tier public peer with similar owner-rental business model and regulated-market exposure; useful benchmark for portfolio operating efficiency.
• Alloheim Senioren-Residenzen: One of Germany's largest private operators of stationary elderly care facilities with ~230 homes. Directly comparable to DSG Deutsche Seniorenstift Gesellschaft for senior care operations, labor exposure, and reimbursement risk.
• Grand City Properties S.A. German residential landlord with ~65,000 units, focused on urban B-locations and value-add repositioning. Comparable for tenant-acquisition and renovation-driven rent growth playbooks.

Regional players

• SAGA Siedlungs-Aktiengesellschaft Hamburg: Hamburg municipal housing company with ~130,000 units. Regional peer with comparable publicly subsidized (WBS) portfolio mix and northern Germany geographic focus.
• Gundlach Bau und Immobilien GmbH: Northern Germany-focused developer and residential landlord headquartered near Bielefeld. Closest size-and-region comparable to Semmelhaack, with overlapping Schleswig-Holstein/Niedersachsen footprint.
• HOWOGE Wohnungsbaugenossenschaft eG: Berlin municipal housing cooperative with ~75,000 units. Comparable for eastern-German residential portfolio management and publicly subsidized (WBS) housing operations.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/semmelhaack-gmbh

Revenue estimate

Valuation estimate

Number of profiles

Profiles13 records

Subsidiaries3 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 Semmelhaack