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Deutsche Fertighaus Holding

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Corporate brand

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German prefabricated-house group known for the brands massa haus, allkauf and OKAL.

Last updated September 16, 2026

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Overview

The DFH GRUPPE describes itself as a competence network in serial house construction and, with its brands massa haus, allkauf and OKAL, as the largest prefabricated-house company in Germany. Its portfolio extends beyond classic single- and two-family house construction, including sales lines for shared living concepts, DFH Wohnungsbau for multi-storey timber housing, and Ein SteinHaus climate walls. DFH Haus GmbH is the implementing unit for single- and two-family houses, while DFH Service GmbH handles cross-group tasks. The group states it has completed over 50,000 construction projects.

History

The DFH GRUPPE presents itself as a competence network in serial house construction. With its brands massa haus, allkauf and OKAL it is known as the largest prefabricated-house company in Germany. Its portfolio already extends well beyond classic single- and two-family house construction: its sales lines realize innovative concepts for shared use of living space, DFH Wohnungsbau specializes in multi-storey timber housing, and the sustainable and resilient climate walls of Ein SteinHaus realize all kinds of living space. DFH Haus GmbH is the implementing organizational unit for the group's single- and two-family houses, while DFH Service GmbH comprises organizational units that take on cross-group tasks. The group states it has realized over 50,000 construction projects.

Products and positioning

Competence network in serial house construction; largest prefabricated-house company in Germany.

  • massa haus

    Brand of the DFH GRUPPE.

  • allkauf

    Brand of the DFH GRUPPE.

  • OKAL

    Brand of the DFH GRUPPE.

  • DFH Wohnungsbau

    Specialized in multi-storey timber housing.

  • Ein SteinHaus

    Offers sustainable and resilient climate walls for all kinds of living space.

Sources3 sources

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