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Modern new-build house in Belgium: styles and prices

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By Edouard Hennin, Provisional reception expert
Published on 27 May 2026 Updated on 27 May 2026 5 min read

The modern house appeals through its clean lines and alignment with high EPC standards.

1. Aesthetic codes

Flat roofs, large windows, contemporary materials. See 120 m² new-build house.

2. Energy performance

Excellent with the right orientation. See EPC new-construction.

3. Local market

See new-build house Walloon Brabant.

Questions on the modern house

Is the flat roof watertight over time?
Yes, provided quality EPDM or bituminous membrane is used and minimum slope (1.5%) is respected. Mandatory ten-year liability.
What additional cost for modern style?
5 to 10% vs a traditional house, mainly due to large windows and the technical flat roof.

Buying a modern house?

Our expert audits plans and watertightness before reception.