Background
#For PV permitting in Appenzell Innerrhoden, the standard case is this: a sufficiently adapted roof system in a building or agricultural zone is notified rather than permitted.
The notification, including the required documents, must reach the responsible building authority no later than four weeks before construction starts. Systems off the roof, systems that are not sufficiently adapted, and projects on protected objects or in townscape and landscape protection zones require a permit. On pitched roofs, the system may project at right angles by no more than 20 cm; on flat roofs, the rules include no more than 1 m above the roof edge and the 45-degree visibility test.
The decisive questions are therefore the location, protection status and precise integration into the roof or façade, not simply the size of the modules.
For your roof
What fits on your roof?
Enter your address to see roof area, yield and a guide price from federal data. We then clarify notification or permit with your municipality.
Free and non-binding · no unsolicited calls
Rather talk directly? +41 78 615 90 58
What applies in the canton of Appenzell Innerrhoden
#Location separates notification from permitting. Under Article 18a of the Federal Spatial Planning Act and cantonal guidance, a sufficiently adapted system on a roof in a building or agricultural zone only needs notification; a system off the roof requires a building application.
On a pitched roof, the 20 cm limit is specific. The system may project at right angles by no more than 20 cm and must not extend beyond the roof area when viewed from above; otherwise a subsequent building-permit procedure may be triggered.
Flat roofs use different measurement points. The upper edge may rise no more than 1 m above the roof edge, and the system must be set back so it is not visible from below at a 45-degree angle; both criteria belong in the layout design.
Protection status overrides the standard rule. A system on a protected object or in a townscape or landscape protection zone requires a permit; the geoportal shows these layers in the “Zonenplan Schutz Gde” map, and the canton recommends prior advice from heritage conservation or the heritage commission.
The four-week deadline is not merely a planning buffer. A notifiable system, including attachments, must be filed no later than four weeks before construction starts; construction may begin only after the decision on the notification has become legally binding.
Complete plans determine processing. The guidance requires, among other documents, a 1:500 site plan, roof plan or façade drawing, and technical data sheet; missing information is requested later and pauses the processing period.
The process in six steps
#Tick off for your project
Check the location in the geoportal
before requesting quotes, check the building or agricultural zone and the “Zonenplan Schutz Gde” layer for protected objects and protection zones. Where protection applies, involve the heritage and archaeology office or the heritage commission before detailed planning.
Set the procedure
choose notification for a sufficiently adapted roof system in a building or agricultural zone; plan a building application for a system off the roof, a protected object, a protection zone or insufficient adaptation.
Dimension the integration
for a pitched roof, document the 20 cm right-angle projection and roof edge. For a flat roof, show in the plans the maximum 1 m structure above the roof edge and the setback needed for 45-degree visibility.
Compile the documents
prepare the application and notification form, 1:500 site plan, roof plan or façade drawing, roof and façade section, and technical data sheet. Plans must be dated and signed by the client and, where applicable, the project lead.
File on time with the correct authority
submit the notification with all attachments at least four weeks before construction starts. Building Administration Inneres Land AI is responsible for the Inneres Land, while Oberegg district administration is responsible for Oberegg.
Await the decision and release installation
for a notification, build only after the decision is legally binding. In the permit procedure, the canton generally expects ten to twelve weeks after a complete building application; requests for additional information pause that period.
Checked for your roof, not just read up on
What fits on your roof?
Enter your address to see roof area, yield and a guide price from federal data. We then clarify notification or permit with your municipality.
Free and non-binding · no unsolicited calls
Rather talk directly? +41 78 615 90 58
Frequently asked questions
#Sources
#The responsible authorities are decisive. Always verify binding details – amounts, deadlines and conditions – for your specific property against the current status of the respective authority.