Design: Piotr Michalski
Lacan 150
With a usable attic · Gable, 45° · No garage
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Estimated cost of materials
≈262,000 zł
typically 247–285 thousand zł
1722 zł per m² of usable area
Materials, gross, November 2026 prices, as the editor shows them.
Selected stages
- Earthworks and foundations
- ≈21,200 zł
- Shell
- ≈63,600 zł
- Roof
- ≈31,800 zł
- Finishes
- ≈26,300 zł
A selection: the total also covers other stages, such as windows and doors, the facade and installations, so the stages don't add up to it.

The house
- Piotr Michalski
- GUNB design catalogue
- 152.54 m²
- 118.45 m²
- With a usable attic
- Gable, 45°
- No garage
What the estimate covers
- The materials for the whole house as modelled: every line shows the quantity, the unit price and the allowance for waste.
- Gross prices as of November 2026: the median of building suppliers' offers.
- Windows, doors, stairs, chimneys and concrete are estimates without installation; the “typically” range comes from them.
- Labour isn't included yet.
Lacan 150
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