Cluster info · Buy new-build

120 m² new-build house in Belgium: price and plans

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

120 m² is the ideal median surface for a Belgian family of 4: 3-4 bedrooms, 2 bathrooms, generous living room.

1. Price and budget

€200,000 to €280,000 excluding land. See 3-bedroom new-build house.

2. Typical layout

3-4 bedrooms + 2 bathrooms + 40 m² living room. See modern new-build house.

3. Local market

See new-build house Brussels.

Questions on the 120 m² new-build house

What plot for a 120 m² 4-frontage?
Allow 300 to 400 m² minimum for a comfortable layout with garden and parking access.
Additional cost to move to 4 bedrooms?
Marginal: the 4th bedroom mainly costs the finish. The structural work follows the surface.

Starting a 120 m² project?

Our expert audits plans, specifications and reception.