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What precautions should be taken before purchasing a remote building site?

Verified 18 August 2022 - Legal and Administrative Information Directorate (Prime Minister)

You are interested in buying a remote building site (located off-site).

What do you have to check? Where to get information? We present you the steps you can take to ensure that your construction project is feasible on this land.

You must ensure that the isolated land put up for sale, is constructible according to city planning rules of the town.

You have the option to view the PLU: titleContent. He explains:

  • Construction Rules
  • Demarcation of natural or technological risk areas
  • Servitudes (mines, pipes, protection of water catchments, natural, cultural and sporting heritage to be protected...)
  • Future local development projects

ThePLU: titleContent, the document in lieu of it, the communal card or the national city planning regulation in the communes not covered by a PLU are available at the city planning department of your town hall. In principle, you can also consult these documents on the website of your municipality.

To find out if your project is feasible in the field, you can request a city planning certificate operational. It will provide you with information on city planning taxes and contributions applicable to the land and the condition of existing or planned public facilities.

You must request city planning certificate from the town hall:

Who shall I contact

The city planning certificate tells you if land is serviced, i.e. connected to various roads and networks (sanitation, drinking water, electricity, gas, telephone...).

If this is not the case and connection to the networks is possible, the charges will be at your expense.


If you sign a sales promise, you can suspensive clause the final sales agreement will be signed provided that a positive operational city planning certificate is obtained. If your project is finalised, you can directly plan for a suspensory condition to get the building permit.

The basement of the building site must be able to bear the burden of future construction.

You can find out about natural hazards (flooding, underground cavities, clay fields...) by visiting:

Search for natural and technological risks on Géorises


At the signing of sales promise or if there is no promise, at the signing of theThe authentic sales document, the seller must give you 3 diagnoses depending on the situation of the field. They concern risks and pollution, clay soils and air noise.

The boundary is not required for the sale of a remote site. However, you can ask the seller if there is one because it allows you to know the exact size and boundaries of the land.

If land is enclosed, you must get right of way one of your neighbours before applying for a building permit in the town hall.

If you have a specific architectural project, you can have a architect at the stage of your choice.

Who can help me?

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