Pool in the canton of Solothurn: building permit required?
Building permit required
Short answer: permanently installed pools require a building permit.
Legal basis: § 3 KBV. Planning and Building Act (PBG) and Cantonal Building Ordinance (KBV). 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 Solothurn
A built-in pool alters the terrain, needs equipment, a water connection and drainage, and therefore requires a permit. For mobile above-ground pools, the limits vary by canton: if you keep it up for more than one season, you usually need an application.
Permit-free in the canton of Solothurn: only very minor projects expressly listed in § 3ter KBV are permit-free. Garden sheds, roofed pergolas, carports and pools generally need a building application.
Procedure: Solothurn is considered a restrictive canton: permit-free projects are exhaustively listed in § 3ter KBV (revised 2024). In case of doubt, the building authority decides whether a project is considered minor.
Submission: digitally via eBau Solothurn in activated municipalities, otherwise to the municipality using the cantonal form.
Note the official municipal instructions in the canton of Solothurn and our document checklist.
Our fixed price for a pool in the canton of Solothurn
- 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 pool is already in place and the municipality requires an application.
Frequently asked questions
Does a pool require a permit in the canton of Solothurn?
Building permit required. Built-in pools require a permit. Legal basis: § 3 KBV.
Which procedure applies in the canton of Solothurn?
Solothurn is considered a restrictive canton: permit-free projects are listed exhaustively in § 3ter KBV (revised in 2024). If in doubt, the building authority decides whether a project counts as minor.
Who may submit the application in the canton of Solothurn?
No formal professional qualification is required. You give us a power of attorney; the client and the landowner sign the application.
How much does the building application for a pool in the canton of Solothurn 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.
Municipalities in the canton of Solothurn
Pool in other cantons
Pool in the canton of Solothurn: we submit the application.
Assessment in 2 working days, dossier in 5. Enquire without obligation.