Building permit in Wilfor pergolas, louvred roofs, carports, garden sheds and pools
Small structures in Wil are subject to the building law of the canton of St. Gallen plus the municipality's building and zoning regulations. We prepare the complete application, submit it to the competent building authority and support you until the decision: fixed price from CHF 690.
A digital service by SL Handel GmbH, based in Zug, for your project in Wil.
See the officially documented submission route for Wil
What needs a permit in Wil
| Structure | Classification (canton of St. Gallen) | Rule |
|---|---|---|
| Pergola | Building permit required | The administrative court classified a roofed pergola as a building; open pergolas are assessed case by case: a preliminary assessment is recommended. |
| Louvred roof | Building permit required | Covered patios require a building permit. |
| Patio cover | Building permit required | Patio covers and large shade sails require a building permit. |
| Carport | Building permit required | Carports require a building permit. |
| Garden shed | Depends on size and location | Small garden sheds may fall under Art. 136 para. 2 PBG; larger ones need a building application to the municipality. |
| Pool | Building permit required | Permanently installed pools require a building permit. |
| Heat pump (outdoor unit) | Depends on size and location | Outdoor units: notification with a noise certificate, or a building application. |
| Solar installation (special case) | Depends on size and location | Solar installations under the RPG: notification (cantonal notification form 2026). Protected properties, open land, solar carport: building application. |
This table shows the cantonal rules. The municipality of Wil can set additional requirements in core zones, in areas protecting the local townscape and through its building regulations. We check the zoning plan and regulations for your plot. Cantonal information source.
Wil at a glance
- Competent office
- Wil Department of Building, Environment and Transport, permits (Departement Bau, Umwelt und Verkehr)
- Submission
- Wil requires the building application documents in digital form and in three paper copies. The applicant, the landowner and the project designer must sign the plans. For plan amendments, the city describes how to show existing structures, demolition and new construction in different colours. Official submission guide
- Building and zoning regulations
- Wil regulations and zoning plan
- Municipal fees
- Under the fee regulations of Wil, paid directly to the municipality.
- Cadastral plan
- From the geoportal of the canton of St. Gallen; we obtain the extract.
- Plan author
- No formal professional qualification required.
Official sources checked on 24 October 2026. The municipality's information is authoritative.
How much does a building application cost in Wil?
| Preliminary check: is a permit needed? | CHF 149credited |
| Complete application for a pergola, louvred roof, carport, garden shed, pool or heat pump | CHF 690fixed price |
| Solar special case (core zone or protected building) | CHF 1'290fixed price |
| Municipal fee in Wil | as per tariffyou pay the municipality |
Example: a 20 m² louvred roof on your house in Wil. You pay us CHF 690 for the dossier, submission and follow-up questions. The municipality invoices its permit fee separately. We tell you the expected amount in the preliminary check.
Request a fixed price for WilDocuments for your building application in Wil
You provide little, we handle the rest. Here is how it is split:
To the building application checklist with official submission examples
What you send us
- Address of the property in Wil
- 3 to 5 photos of the site (façade, patio, towards the boundary)
- Dimensions or the manufacturer's drawing of the product
- Signature of the building owner and the landowners
- For condominium ownership: consent of the owners' association
What we obtain and prepare
- Cadastral plan from the official survey
- Site plan with the structure, dimensions and boundary distances
- Application form for the canton of St. Gallen, fully completed
- Construction description, elevations and list of enclosures
- Check of the Wil zoning plan and regulations
- Depending on the structure: noise certificate (heat pump), neighbours' consent
The local submission route in Wil
Wil requires the building application documents digitally and in three paper copies. The applicant, the landowner and the project author must sign the plans. For plan amendments, the city specifies that existing, demolished and new parts are shown in different colours.
- Prepare the site and project plans to scale and obtain the necessary signatures.
- Align the cantonal form G1 and the required additional forms with the digital submission and the three paper copies.
Source: City of Wil: building application and documents, accessed on 24 October 2026.
Frequently asked questions about building applications in Wil
How do I submit a building application in Wil?
Wil requires the building application documents digitally and in three paper copies. The applicant, the landowner and the project author must sign the plans. For plan amendments, the city specifies that existing, demolished and new parts are shown in different colours.
Do I need a permit for a louvred roof in Wil?
Covered seating areas require a building permit. Legal basis: Art. 136 PBG.
Is a garden shed exempt from a permit in Wil?
Small garden sheds may fall under Art. 136 para. 2 PBG; larger ones need a building application at the municipality. Legal basis: Art. 136 Abs. 2 PBG.
How much does a building application cost in Wil?
With us, CHF 690 fixed price for the complete application including submission and follow-up questions; the preliminary check (CHF 149) is credited. The authority's fee is extra and is based on the fee regulations of the municipality of Wil. We tell you the expected amount in the preliminary check.
Who may draw up the application plans in Wil?
No formal professional qualification required.
How long does a building application take in Wil?
We prepare the application file within 5 working days of receiving all required documents. The authority's processing time depends on the procedure, completeness and any objections.
Already built in Wil?
If the municipality of Wil requires a retrospective building application, the deadline is decisive. We confirm it on the same working day, check whether the project can be approved and submit within 3 working days. Retrospective building application
How to sign a building application in Wil
Who signs, whether a scan is sufficient and what simplifications apply. We apply this information automatically in your dossier.
- Submission
- Formular G1 (electronic submission in preparation)
- Who signs
- The landowner, the applicant and the project author; the form has a separate field for the tenant or installation operator.
- Form of signature
- Paper original required
Submission on paper, usually in triplicate, with original signatures. Electronic procedural steps are planned from 2027. - Small projects
- Simplified procedure (Art. 82bis PBG). Solar installations: notification form no later than 30 days before construction starts.
- Power of attorney
- We submit as your authorised representative. We enclose the power of attorney with the application, so we need it with your handwritten signature.
- Tenancy, condominium ownership
- Tenants need the landlord's written consent (Art. 260a CO); as landowner, the landlord also signs the application. With condominium ownership, structural changes to common parts (façade, roof, patio with exclusive right of use) generally require the consent of all condominium owners or a resolution of the owners' meeting (Art. 647d, 647e and 712g CC). The condominium regulations are decisive.
- Neighbours
- Neighbours' consent is usually voluntary but often speeds up the procedure. If boundary or building distances are not respected, it is required, depending on the canton as an easement entered in the land register.
- Good to know
- Plan colours: existing black, demolition yellow, new red.
As of October 2026. Practice differs between municipalities; the municipality and canton are authoritative. Sources: Canton of St. Gallen: notification of solar installations.
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Building application in Wil, from CHF 690.
Assessment in 2 working days. Non-binding.