Building permit in Mellingenfor pergolas, louvred roofs, carports, garden sheds and pools
For small structures in Mellingen, the building law of the canton of Aargau applies, plus the municipality's building and zoning regulations. We prepare the complete application, submit it to the responsible building authority and support you through to the decision: fixed price from CHF 690.
Digital service by SL Handel GmbH, based in Zug, for your project in Mellingen.
What needs a permit in Mellingen
| Structure | Classification (canton of Aargau) | Rule |
|---|---|---|
| Pergola | Building permit required | A pergola over 5 m² needs a building permit, usually in the simplified procedure without profile poles or public notice. |
| Louvred roof | Building permit required | Covered patios up to 40 m² and 3 m high follow the simplified procedure; larger ones the ordinary procedure. |
| Patio cover | Building permit required | Covered patios open on at least one side: simplified procedure up to 40 m² / 3 m. |
| Carport | Building permit required | Carports require a permit; a simplified procedure is possible. |
| Garden shed | Depends on size and location | Tool sheds up to 5 m² and 2.5 m high need no permit. Larger garden sheds: simplified procedure up to 40 m². |
| Pool | Building permit required | Permanently installed pools require a permit; ponds up to around 10 m² are exempt. |
| Heat pump (outdoor unit) | Depends on size and location | Heat pump outdoor units: notification procedure possible with noise protection proof, otherwise building application. |
| Solar installation (special case) | Depends on size and location | Adapted roof or façade systems: notification. Open ground, protected zones, solar carport: building permit. |
This table shows the cantonal rules. The municipality of Mellingen may set additional requirements in core zones, in protected townscape areas and in its building regulations. We check the zoning plan and regulations for your plot. Cantonal information source.
Mellingen at a glance
- Competent office
- Mellingen Building and Planning (Bau und Planung)
- Submission
- Digitally via eBau Aargau in participating municipalities, otherwise with the municipality using the cantonal application form.
- Building and zoning regulations
- Mellingen regulations and zoning plan
- Municipal fees
- Under the Mellingen fee regulations, paid directly to the municipality.
- Cadastral plan
- From the geoportal of the canton of Aargau; we obtain the extract.
- Plan author
- No formal qualification requirement for plan authors; plans must meet the requirements of § 51 BauV.
Official sources checked on 24 October 2026. The municipality's information is authoritative.
How much does a building application in Mellingen cost?
| 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 |
| Fee of the municipality of Mellingen | as per tariffyou pay the municipality |
Example: a 20 m² louvred roof on your house in Mellingen. 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 MellingenDocuments for your building application in Mellingen
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 Mellingen
- 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 Aargau, fully completed
- Construction description, elevations and list of enclosures
- Check of the Mellingen zoning plan and regulations
- Depending on the structure: noise certificate (heat pump), neighbours' consent
Frequently asked questions about building applications in Mellingen
Where do I submit a building application in Mellingen?
At the building authority of the municipality of Mellingen. Digitally via eBau Aargau in the participating municipalities, otherwise at the municipality using the cantonal application form.
Do I need a permit for a louvred roof in Mellingen?
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.
Is a garden shed in Mellingen exempt from a permit?
Tool sheds up to 5 m² and 2.5 m high are permit-free. Larger garden sheds: simplified procedure up to 40 m². Legal basis: § 49 lit. b, § 50 BauV.
How much does a building application in Mellingen cost?
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 added and is set by the fee regulations of the municipality of Mellingen. We tell you the expected amount in the preliminary check.
Who may draw up the application plans in Mellingen?
No formal qualification requirement for plan authors; plans must meet the requirements of § 51 BauV.
How long does a building application in Mellingen take?
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 Mellingen?
If the municipality of Mellingen requires a retrospective building application, the deadline matters. 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 Mellingen
Who signs, whether a scan is sufficient and what simplifications apply. We apply this information automatically in your dossier.
- Submission
- eBau Aargau
- Who signs
- The building owner, the landowner and the project author, on the signature sheet generated by the portal. Representation, for example by a planning office, is expressly permitted.
- Form of signature
- A scan or photo is sufficient
Since 15 December 2025, submission via the portal replaces the paper form. The signed signature sheet is uploaded; during the transition period, some municipalities still ask for a paper copy. - Small projects
- Cantonal forms on fire protection and wastewater are integrated into the portal. Heat pumps: noise protection certificate according to Cercle Bruit.
- 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.
As of October 2026. Practice differs between municipalities; the municipality and canton are authoritative. Sources: Canton of Aargau: eBau, Canton of Aargau: application documents.
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Building application in Mellingen, from CHF 690.
Assessment in 2 working days. Non-binding.