Buildable land in the French Genevois: where to look, what to check

In short: to find buildable land in the French Genevois, combine several sources (listings, agencies, notaries, town halls, subdivision schemes, local network), then systematically check the PLU zoning, the planning certificate, servicing, easements, natural risks and the soil before signing.

The French Genevois, around Annemasse, Saint-Julien-en-Genevois and the towns near the Swiss border, attracts many households who want to build. Available land is in demand and planning rules are often demanding. Searching well and checking well helps avoid unpleasant surprises.

Where to look for buildable land

No single source is enough. Land can be found through several channels:

• online listings and estate agencies: the most visible source, but good plots go quickly;
• notaries: they often know about estates and land sales, sometimes before they are publicly advertised;
• town halls: they know about subdivision projects and changes to the local plan, and the rules can be consulted at the town hall or online on the Géoportail de l'urbanisme;
• subdivision schemes: a developer offers serviced plots with subdivision rules that state what can be built;
• dividing a property: some owners agree to detach a plot from a large property, which requires a proper plot division;
• the local network: builders, surveyors and tradespeople in the area often know which plots are available.

Widening the search to several towns, while keeping commuting time in mind, increases the chances of finding a suitable plot.

Check the PLU zoning and rules

Each town has its local plan (PLU), or sometimes an inter-municipal plan. It classifies land into zones: urban (U), to be urbanised (AU), agricultural (A) and natural (N). Only some zones allow a house to be built.

The zone rules then set the conditions: maximum height, footprint, distances from boundaries and the road, the look of façades and roofs, parking spaces and the share of green space. These rules determine the size and shape of the house you can build. Our article Reading a PLU before building in Haute-Savoie explains how to read them.

Request a planning certificate

The planning certificate (certificat d'urbanisme) sets out the rules that apply to the land. The operational certificate also states whether the intended project is feasible. It is requested from the town hall and fixes certain rules for its period of validity. It is a useful step before signing a preliminary agreement.

Check the servicing

Buildable land is not always serviced. Check:

• access from the public road, and whether it relies on an easement;
• connection to drinking water and electricity;
• sewage: mains network or an individual system, which requires a specific soil study;
• rainwater management, often governed by the PLU.

Connection costs can be significant if the networks are far away: ask the network operators for information before committing.

Identify easements and risks

The title deed and planning documents may reveal easements: rights of way, utilities, views or public-interest easements. Also consult the risk statement attached to the sale and the town's natural risk prevention plan (flooding or ground movement, for example). In some parts of Haute-Savoie, the Mountain Law also applies.

Know the soil

In areas exposed to clay shrink-swell, the seller must provide a preliminary geotechnical study. Elsewhere, a soil study is still recommended: it allows the foundations to be adapted and avoids extra costs during the build. The slope of the land also matters, as it affects earthworks and the position of the house.

Check boundaries and area

Land marked out by a chartered surveyor (géomètre-expert) has certain boundaries. Boundary marking is mandatory in a subdivision and strongly recommended in other cases. It avoids disputes with neighbours and guarantees the area you buy.

Secure the preliminary sale agreement

The preliminary agreement can include conditions precedent: obtaining the loan, obtaining the building permit, no serious easement, a satisfactory soil study. They protect you if the project cannot go ahead. Your notary will advise you on how to word them. Our article What to check before buying buildable land completes these points.

What is the price of buildable land?

The price of buildable land mainly depends on the town, the plot size, what the local plan (PLU) allows you to build, servicing and the surroundings. In the French Genevois, proximity to Geneva also plays a role. To estimate a price, compare recent sales with notaries and have the land studied before you commit.

Buying land and building: where to start?

Start by setting your overall budget, including both land and construction, then check the plot: PLU, planning certificate, servicing, easements, risks and soil. Next, sign a preliminary agreement with conditions precedent for the loan and the permit, and prepare the house project with your builder.

Key points to remember

• Combine sources: listings, agencies, notaries, town halls, subdivisions, local network.
• Check the PLU zoning and rules before any commitment.
• Request an operational planning certificate.
• Check servicing, easements, risks and soil.
• Have the land surveyed and include conditions precedent in the agreement.

This article is general information, checked in November 2026. Consult the town hall, your notary and a chartered surveyor before any purchase: every plot is a special case.