Kostum FAQ — Pergolas
Answers to your questions
Last updated:
I want to install a pergola, where should I place it in my garden?
The choice of location depends on your lifestyle:
South-facing: For maximum sun exposure and intense light throughout the day.
East: To enjoy the gentle morning sun (ideal for outdoor breakfasts).
West: To capture the light at the end of the day and extend your evenings in the sun.
I want to install a pergola, but how does the water drain?
The pergola is designed to efficiently drain rainwater. A gutter integrated into the beam directs water to a high-flow drain concealed within one of the posts.
Do I need a building permit for a pergola?
Regulations depend on the area and type of installation:
Less than 5 m²: No action required (outside protected areas).
Between 5 and 20 m²: A simple prior declaration is sufficient.
Over 20 m²: A building permit is required.
Special case: If your pergola is wall-mounted and you are in an urban zone (PLU), the prior declaration may suffice for up to 40 m².
Tip: Local rules vary (historic districts, housing developments). Always contact your city hall’s urban planning department before starting your project.
My patio is already tiled/waterproofed. Won’t the installation damage everything?
Installing a pergola on a tiled patio or one built on pedestals is a common procedure that your installer is fully qualified to handle. However, in the case of a patio with a waterproofing system, special care is required: it is generally not recommended to drill into the Support to avoid compromising the waterproofing.
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