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In what cases should an architect be employed?

Verified 21 janvier 2020 - Directorate for Legal and Administrative Information (Prime Minister)

As a general rule, the use of the architect is mandatory in order to draw up the plans for your file building permit.. However, in some cases, you may be exempted.

Individual

New Construction

More than 150 m²

You have to resort to an architect when you're building a non-farm building, like a detached house, including the floor surface is more than 150 m².

Less than 150 m²

You don't have to resort to an architect when you're building a non-farm building, like a single-family home. floor surface is less than or equal to 150 m².

Existing Building Expansion

Construction of more than 150 m² after works

When you apply for a building permit to expand an existing building, you are required to apply to an architect if the floor surface or right of way on the ground after works exceed 150 m².

Construction of less than 150 m² after construction

When you file a building permit to expand an existing building, you do not have to resort to an architect if the floor surface or right of way on the ground after works do not exceed 150 m².

Agricultural operator (natural or legal person)

New Construction

Agricultural building
Over 800 m²

Farms are obliged to use an architect for a building for agricultural use which floor surface and right of way on the ground are more than 800 m². The same is true of agricultural equipment co-operatives.

Less than 800 m²

Farms do not have to resort to an architect for an agricultural construction whose floor surface and right of way on the ground are less than or equal to 800 m². The same is true of agricultural equipment co-operatives.

Greenhouse
Over 2,000 m²

Farms are obliged to use an architect to build a greenhouse whose floor surface and right of way on the ground are more than 2000 m². The same is true of agricultural equipment co-operatives.

Less than 2,000 m²

Farms do not have to resort to an architect to build a production greenhouse. The sizes of this greenhouse must be less than 4 meters high and floor surface and ground right of way must be less than or equal to 2000 m². The same is true of agricultural equipment co-operatives.

Existing Building Expansion

Agricultural building
Over 800 m² after renovation

Farms are obliged to use an architect to extend an existing building for agricultural use, if floor surface or right of way on the ground after works exceed 800 m². The same is true of agricultural equipment co-operatives.

Less than 800 m² after works

Farms do not have to resort to an architect to expand an existing building for agricultural use if the floor surface or right of way on the ground after works are less than 800 m².

Greenhouse
Greenhouse more than 2 000 m² after works

Farms are required to use an architect to expand an existing greenhouse if the floor surface orground right of way after works exceed 2 000 m². The same is true of agricultural equipment co-operatives.

Greenhouse of less than 2 000 m² after works

Farms do not have to resort to an architect to expand an existing greenhouse if the floor surface orground right of way after works are less than 2,000 m². The same is true of agricultural equipment co-operatives.

Legal persons

The legal persons must use the services of an architect to establish their architectural project any construction or works project..

Free advice is available from

  • an architect from the architectural, urban and environmental council (CAUE)
  • or the town planning department of the municipality where the land is located.
Who shall I contact