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Before you buy a plot

1. Make sure the plot is building land (terrain constructible). Cheap land is often rural land where you cannot build a home.
2. Ask the town hall for a certificat d’urbanisme opérationnel (2-month delay, valid 18 months): it states whether your project is feasible on the plot. Source
3. Check the utilities at the plot boundary: water, electricity and sewer. Ask each supplier for a connection quote before you sign.
4. Check access. Modular homes arrive by truck in large modules and are set in place by crane: road width, bends, slope and space for the crane all matter.
5. Get a soil study before final pricing. The foundations, and their cost, depend on the ground.
6. Ask about setbacks, rights of way and flood risk. They limit where the house can go on the plot.

Permits for prefab and modular homes in France

• A new house needs a building permit (permis de construire) once it creates more than 20 m² of floor area or footprint. The town hall has 2 months to decide on a complete file (3 months in protected areas). Source
• Above 150 m² of floor area (surface de plancher), the plans must be drawn up by an architect. Source
• New homes must meet the RE2020 environmental standard (energy and carbon). Ask the manufacturer for the RE2020 study of the model. Source

Last checked: 5 October 2026. Rules change: confirm with the municipality before you buy.

Land for sale by region in France

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