Louvred roof in the canton of Aargau: building permit required?
Building permit required
Short answer: covered seating areas up to 40 m² and 3 m high go through the simplified procedure; larger ones through the ordinary procedure.
Legal basis: § 50 BauV. Building Act (BauG) and Building Ordinance (BauV). As of October 2026. Applies within the building zone and outside core zones and protected areas. Municipalities may be stricter.
What specifically applies in the canton of Aargau
A louvred roof protects against rain and sun. Because it protects against the weather, almost all cantons and municipalities treat it like a covered seating area: it counts towards the built area, must meet boundary distances and usually needs a building permit, even if the dealer says otherwise.
Permit-free in the canton of Aargau: very small structures up to 5 m² footprint and 2.5 m total height with minimal impact (tool sheds, bike shelters) as well as ponds up to about 10 m² are permit-free (§ 49 BauV).
Procedure: simplified procedure without profile poles or public display for small and annex structures such as garden sheds, covered seating areas and individual parking spaces within the building zone (§ 50 BauV), up to 40 m² footprint and 3 m building height.
Submission: digitally via eBau Aargau in participating municipalities, otherwise to the municipality using the cantonal application form.
Note the official municipal instructions in the canton of Aargau and our document checklist.
Our fixed price for a louvred roof in the canton of Aargau
- Preliminary check CHF 149, written assessment with the procedure, documents and fee range of your municipality. Credited towards the application.
- Building application CHF 690, complete dossier, submission, queries and deadlines until the decision. Excl. municipal fees.
- Retrospective building application CHF 990, if a louvred roof is already in place and the municipality requires an application.
Frequently asked questions
Does a louvred roof need a permit in the canton of Aargau?
Building permit required. Covered seating areas up to 40 m² and 3 m high go through the simplified procedure; larger ones through the ordinary procedure. Basis: § 50 BauV.
Which procedure applies in the canton of Aargau?
Simplified procedure without building profiles or public display for small structures and annexes such as garden sheds, covered patios and individual parking spaces within the building zone (§ 50 BauV), up to 40 m² floor area and 3 m building height.
Who may submit the application in the canton of Aargau?
No formal qualification requirement for plan authors; plans must meet the requirements of § 51 BauV. You give us a power of attorney; the client and the landowner sign the application.
How much does the building application for a louvred roof in the canton of Aargau cost?
Our fixed price is CHF 690 for the dossier including submission and follow-up questions. Official fees and any agreed additional services are extra; the official tariff depends on the location.
Louvred roof in the canton of Aargau, we file the application.
Assessment in 2 working days, dossier in 5. Enquire without obligation.