KUBUS Immobilienvermittlungs und -Treuhand

What KUBUS Immobilienvermittlungs und -Treuhand does

KUBUS Immobilienvermittlungs und -Treuhand GmbH is a family-owned real estate project developer headquartered in Oldenburg, Lower Saxony, Germany, founded in 1979 by Dirk Onnen. The company develops urban residential quarters, commercial properties, vacation real estate on the East Frisian North Sea islands (Langeoog, Wangerooge, Carolinensiel), and conversion (Konversion) of heritage buildings in Northwest Germany. Its portfolio spans singles, families, seniors, students, and commercial tenants, with a branded sub-product called KUBOX emphasizing high-efficiency, energy-conscious apartment design.

The company's revenue model combines one-time property sales, retained rental income from owned residential and commercial units, and project development and management fees from institutional clients such as Nordfund Gruppe and HIIVE Group. KUBUS acts as project developer and lead for joint ventures with partners including Ludwig Freytag, MD Projektmanagement, HS-Architekten, Angelis & Partner, and BOB efficiency design AG. Distribution is direct sales-led via the company's own sales team, website (www.kubus-immobilien.de on Squarespace), Instagram, and LinkedIn, with quote-driven, project-based pricing. Marketing emphasizes deep local market knowledge, Stadtbild- and Denkmalschutz-preis awards, and multi-generational family management.

The current pipeline is broad and multi-segment: completed projects include the Havekant quarter (Turm, Riegel, U-Hof 1 fully occupied since June 2022, U-Hof 2, U-Hof 3), Stadthafen Nord developments, Silt & Sand and NOORD hotels, Anna See and Anna Düne vacation properties; in-development projects include Campus Haarentor (256 student units, construction started April 2025), Heinjehof (senior living), Ärztehaus Kanalstrasse, Seekrug (gastronomy), Krantine (event venue), and Ehnernstrasse. The company uses standard enterprise software (Microsoft Office, document management, TLS/SSL) and Squarespace for its web presence; no proprietary technology platform or AI/ML capabilities are disclosed. Ownership remains concentrated within the Onnen family, with second-generation daughters Lisa, Hanna, and Oona Onnen now managing architecture, real estate economics, and construction project management respectively.

Name

KUBUS Immobilienvermittlungs und -Treuhand

Legal name

KUBUS Immobilienvermittlungs und -Treuhand GmbH

Website

https://kubus-immobilien.de

Company type

Private

Founded year

1979

Operating status

Operating

Short description

KUBUS Immobilienvermittlungs und -Treuhand GmbH is a family-owned Oldenburg-based real estate developer founded in 1979, specializing in residential quarters, commercial, vacation, senior, and student housing in Northwest Germany, with revenue from property sales, rentals, and project management fees.

Ownership category

akta.pro rank

Product category

Real Estate Development

SIC

Land Subdividers & Developers (No Cemeteries) (6552), General Bldg Contractors - Residential Bldgs (1520)

akta.pro primary industry

Senior & Assisted Living Residential Property Management (BPAJAFAE)

Keywords

• Residential real estate development
• Commercial property development
• Vacation property investment
• Historic building conversion
• Urban quarter development

Headquarters

HQ city

Oldenburg

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

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

Revenue model

1. Real Estate Development & Sales: KUBUS develops residential and commercial properties for sale to end buyers and investors. Revenue is generated through the sale of completed apartments, houses, and quarters, including vacation properties.
2. Rental Income: The company retains ownership of certain residential units and commercial spaces generating recurring rental income. This includes senior living units, student apartments, and commercial office space.
3. Project Management & Development Fees: KUBUS serves as project developer and project lead for third-party clients (e.g., Nordfund Gruppe, HIIVE Group) on hotel and vacation property projects, earning development and project management fees.

Go-to-market motion2 records

Distribution channels2 records

Marketing channels4 records

Core offering

KUBUS Immobilien develops residential, commercial, vacation, and senior/student housing properties across Northwest Germany, organized into four core service lines: urban residential quarter development (Quartiersentwicklung & Wohnungsbau), holiday property development (Ferienimmobilien), commercial construction (Gewerbebau), and historic building conversion (Konversion). The company sells or rents completed properties to individual buyers, families, investors, and commercial tenants, while also acting as project developer and lead for institutional clients such as Nordfund Gruppe and HIIVE Group. Its proprietary branded product is KUBOX, a high-efficiency apartment concept featuring optimized floor plans and high energy efficiency standards.

Product overview

KUBUS Immobilien is a real estate development company offering four core services: Quartiersentwicklung & Wohnungsbau (urban residential quarter development), Ferienimmobilien (holiday properties), Gewerbebau (commercial construction), and Konversion (historical building revitalization). The company also offers the KUBOX Apartments as a branded product line featuring high-efficiency, sustainable apartment designs. Their portfolio includes completed projects such as the Havekant urban quarter (with Tower, Riegel, and three U-Hof buildings), hotels Silt & Sand and NOORD, multiple Stadthafen residential buildings, and vacation properties on East Frisian islands. Current developments include Campus Haarentor (student housing), Heinjehof (senior living), Seekrug (gastronomy), Krantine (event venue), Ehnernstrasse, and Ärztehaus Kanalstrasse. The company operates in northwestern Germany with over 30 years of experience, completing projects across residential, commercial, and hospitality sectors.

Differentiator

Problem solved

Functional benefit

Brands

• KUBOX: A sustainable apartment concept developed by KUBUS, featuring highly efficient floor plans and optimal space utilization along with contemporary architecture and high energy efficiency standards.

Products and services

• Quartiersentwicklung & Wohnungsbau
• Ferienimmobilien
• Gewerbebau
• Konversion
• KUBOX Apartments
• Project Development & Project Management Services

Quantifiable outcome

• Havekant Turm: ~90 high-quality apartments with generous loggias/balconies and spectacular views over the Hunte river
• +4 more outcomes

Named customers3 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Eight partnerships are on record, tiered core and minor.

• Ludwig FreytagcoreStrategic or Co-development PartnerKUBUS partnered with Ludwig Freytag and MD Projektmanagement to develop the Campus Haarentor project in Oldenburg — a residential development of 256 apartments for students and trainees. The project is funded by the State of Lower Saxony and the Federal Republic of Germany.
• MD ProjektmanagementcoreStrategic or Co-development PartnerMD Projektmanagement is a co-development partner in the Campus Haarentor student housing project alongside KUBUS and Ludwig Freytag.
• MDP GruppeminorStrategic or Co-development PartnerMDP Gruppe is a partner in the Ärztehaus Kanalstraße project in Oldenburg, a multifunctional healthcare and senior living complex spanning ~5,500 sqm with 79 units for assisted living and a day care center.
• Nordfund GruppecoreStrategic or Co-development PartnerNordfund Gruppe from Oldenburg commissioned KUBUS for project development and project management of the Silt & Sand hotel on Langeoog and the NOORD hotel in Carolinensiel. KUBUS acted as the project developer and lead from initial concept through to completion.
• HIIVE GroupcoreOthersHIIVE Group operates the Silt & Sand hotel (Langeoog) and the NOORD hotel (Carolinensiel), both developed by KUBUS. KUBUS developed the properties on behalf of Nordfund Gruppe and HIIVE operates them as hotel operator.
• BOB efficiency design AGminorStrategic or Co-development PartnerBOB efficiency design AG co-developed the Stadthafen Nord Hof 2 office complex with KUBUS, providing advanced energy-efficient and smart building technology for the commercial component.
• HS-Architekten PartGmbBcoreTechnology or IntegrationHS-Architekten PartGmbB from Hamburg is the primary architectural partner for multiple KUBUS projects including Havekant, Havekant Turm, Havekant Riegel, Silt & Sand (interior design), KUBOX apartments, and other residential developments. The firm designed the masterplan for the Alter Stadthafen area.
• Angelis & PartnercoreTechnology or IntegrationAngelis & Partner from Oldenburg provided interior design for the Silt & Sand hotel and designed the Havekant U-Hof 3, combining Nordic clarity with residential warmth in their design concepts.

Scale indicators2 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Instone Real Estate Group: German residential real estate developer listed on the Frankfurt Stock Exchange, focused on urban housing quarters and project development. Comparable as a residential-focused Projektentwickler, though larger and more geographically diversified than KUBUS.
• Zech Group: Family-owned German construction and real estate group with significant project development across residential, commercial, and hotel properties. Comparable as a Mittelstand developer with a similarly broad asset mix and family governance.
• Euroboden GmbH: Boutique German real estate developer focused on high-end residential quarter development and heritage building revitalization in select cities. Closest stylistic match to KUBUS given its emphasis on design quality, urban integration, and Konversion-style projects.
• Becken Gruppe: Hamburg-based real estate developer and asset manager focused on office, hotel, and mixed-use properties in German metropolitan areas. Comparable on commercial development expertise and project scale, particularly for the Gewerbebau segment.
• Bauwert AG: German residential and mixed-use project developer active in Berlin and other major German cities. Comparable as a mid-market Projektentwickler targeting urban residential and commercial buyers.

Broad incumbents

• Helma Eigenheimbau AG: German residential developer specializing in detached and semi-detached homes, with growing focus on multi-family housing. Adjacent overlap on residential development, though broader geographic footprint and retail-style sales model.
• Bien-Zenker Group: One of Germany's largest prefabricated home builders. Overlaps on residential construction but operates a different delivery model (factory-built housing) compared to KUBUS's site-built urban projects.

Regional players

• NORDWEST BAU Gruppe: Regional construction and development group operating in Northwest Germany (Lower Saxony / Bremen area). Regional peer with overlapping territory, though broader construction focus than KUBUS's development-led model.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights5 records

Customer concentration

• LinkedInlinkedin.com/company/kubus-immobilien
• Instagraminstagram.com/kubus_immobilien

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 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 KUBUS Immobilienvermittlungs und -Treuhand