Your home. Individually designed. Your project. Whatever the scale.
EcoBau GmbH from Hannover — turnkey prefab homes in timber-frame construction, plus apartment buildings, commercial buildings and facilities for education and care. A family business since 1994.
For private clients
Your home, individually designed and turnkey
Detached house, bungalow, modular house or tiny house – drawn for your site, made in our own plant. Efficiency House 40, fixed price for twelve months.
To the housesFor developers, business and public clients
Residential and commercial buildings
Apartment buildings, offices and administration, nurseries and clinics — turnkey or as individual work packages. Built up to around 10,500 m² gross floor area.
To residential and commercialA house is not an off-the-shelf product. Our construction method is – in the best sense.
Every EcoBau house is built twice: first to the millimetre in the factory, then in a few days on your plot. The precision of serial manufacturing meets a floor plan that exists exactly once – yours. The result is predictable in price and schedule, without architecture becoming a bargaining chip.
- 12 months
- Fixed-price guarantee from contract signing – your budget stays your budget.
- 5 years
- Guarantee on the building structure and statutory warranty under German law (BGB) on all other work.
- EH 40
- Efficiency House 40 ex works: heat pump, ventilation system, PV preparation included.
- Own plant
- Wall, floor and roof elements are produced weather-protected in our own manufacturing hall.
Why we build with timber
Timber-frame construction is not only fast and precise. The material itself brings qualities that no other has.
- A healthy indoor climate
- Timber is a natural, hypoallergenic material: electrostatically neutral, it does not attract dust. The result is noticeably pure indoor air.
- Moisture, naturally regulated
- Timber walls absorb moisture when the air is humid and release it when it is dry – a balanced indoor climate entirely without additional technology.
- Light and dimensionally stable
- At around 500 kg/m³, timber is significantly lighter than concrete and at the same time elastic: the structure stays stable even under vibrations.
- Renewable and low in CO₂
- Every cubic metre of installed timber stores around one tonne of CO₂ – a material that regrows instead of consuming resources.
Four house forms. Countless floor plans.
From the tiny house to the multi-family house: each type is a proven basic framework – rooms, facade and details we plan anew with you.
Structure & materials
An EcoBau wall is not a solid block but a considered build-up of several layers – from the gypsum-fibre board inside, through the stud framing and insulation, to the façade. Load-bearing parts are made from structural solid timber and cross-laminated timber (CLT); all key materials come with quality certificates. Together they form a highly insulated, airtight envelope to Efficiency House 40 standard.
We manufacture ourselves.
Wall, floor and roof elements are made in our own hall – checked before they leave the plant. On site, elements are assembled, not built.
Reliability you can check for yourself.
- since 1994
- 32 years of experience in construction – from the timber-frame prefab home to the public building
- 5 years
- Guarantee on the building structure and statutory warranty under German law (BGB) on all other work
- 12 months
- Fixed-price guarantee from contract signing, independent of material prices
- EH 40
- Efficiency House standard ex works – a requirement for KfW funding 297/298
We work under a construction contract in accordance with German law (BGB): a five-year guarantee on the building structure and statutory warranty from acceptance on all other work, instalment payments only for work performed, bonds included.
The questions that come up now
Honest answers with 2026 figures – in more detail in the guide.
What does a prefab home from EcoBau cost?
That depends on the house type, living space, specification and plot. Instead of a catalogue figure, you receive an individual fixed-price offer from us after a no-obligation initial consultation – transparently calculated, with a 12-month price guarantee from contract signing. The plot and ancillary building costs are added to the house price.
How long does it take to build a prefab home?
A general figure in weeks would be misleading: the duration depends on the building authority, your financing, the ground conditions and the weather – factors outside our control. What prefabrication does deliver is moving the shell into the hall: on site, elements are assembled, not built. You receive a reliable programme for your own project once the site and the consent position are settled.
What exactly does “turnkey” mean?
“Turnkey” is not a legally defined term – the scope of work is set out in the construction & specification document. For us it means: move-in ready including bathrooms, floors and interior doors. As a rule, only compare offers with an identical scope of work.
Can I plan a prefab home entirely individually?
Yes. Alongside our house types, we plan freely designed architect homes in timber-frame construction – floor plan, facade, roof shape and specification are created individually. Prefabrication in the factory hardly limits the design.
What KfW funding is available in 2026 for building a house?
Through “Climate-Friendly New Construction” (KfW 297/298) there are interest-reduced loans of up to 150,000 euros per residential unit from Efficiency House 40 standard. Families with a child and a maximum taxable income of 90,000 euros can alternatively use KfW 300 with up to 270,000 euros.
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