In brief
For a cube house (Kubushaus) as a prefab, expect turnkey costs of around €320,000 (120 m²) to €600,000 (180 m², premium) in 2026, excluding plot and ancillary construction costs. The cube house is a cube-shaped structure in Bauhaus style with a flat roof, clear edges and usually large glass surfaces. Per square metre, the price ranges depending on fittings between €2,500 and €3,800. The flat roof serves as a roof terrace or can be covered over a large area with photovoltaics. The floor-to-ceiling window fronts and the precise sealing of the flat roof make the cube house somewhat more expensive than a gable-roof house, but give it its striking, modern architecture.
What a Cube house as a prefab home costs – the overview
With the Cube house as a prefab home, prefab construction pays off above all in the price: a binding fixed price ex works protects against nasty surprises, the short build time lowers the interim financing costs and the high energy standard gives you access to KfW funding in 2026. It is precisely these three levers that keep the calculation predictable.
The wall and ceiling elements are built to the millimetre in weather-protected factory halls, and the shell often stands on the building site after just one to three days. Less time on the building site means less weather risk – and that also lowers the price in the end.
This speaks in favour on price
- Binding fixed price – calculable from the start
- Short build time reduces the interim financing
- High energy standard secures KfW funding
- Price can be adjusted deliberately via the finishing stage
This drives the price up
- An upmarket selection of finishes can raise the per-m² price considerably
- The plot and incidental building costs always come on top
- Subsequent floor-plan changes cost a lot
Putting per-square-metre costs and the total price 2026 in context
The price for a Cube house as a prefab home depends decisively on the finishing stage: turnkey, the per-square-metre costs in 2026 are around 2,000 to 3,500 EUR/m², as a shell house from about 1,300 EUR/m². From €320,000 is a realistic starting price for the turnkey basic version.
In addition to the pure house price, factor in the incidental building costs (around 15–20 % of the construction sum), earthworks and a buffer. With our cost calculator you can determine your individual total price. How each price factor works is shown on the Prefab house prices 2026 page.
For a cube house as a prefab, reckon on turnkey costs of €320,000 to €600,000 in 2026 — depending on living area, glazing and fittings. Large glass surfaces and the flat roof shape the price more strongly than with a plain multi-storey house. The following table shows non-binding price ranges for 2026 by living area:
| Living area | Entry segment | Mid segment | Premium segment |
|---|---|---|---|
| 120 m² | €320,000 – 365,000 | €365,000 – 415,000 | €415,000 – 460,000 |
| 140 m² | €370,000 – 420,000 | €420,000 – 475,000 | €475,000 – 520,000 |
| 160 m² | €420,000 – 480,000 | €480,000 – 535,000 | €535,000 – 575,000 |
| 180 m² | €470,000 – 530,000 | €530,000 – 575,000 | €575,000 – 600,000 |
Non-binding ranges for 2026, turnkey, excluding plot and ancillary construction costs (15 to 20 percent). Floor-to-ceiling window fronts, a proper flat-roof sealing and a walkable roof terrace raise the price compared with a gable-roof house. The flat roof is excellently suited for a raised photovoltaic system. The development plan must permit a flat roof.
