Housing inventory and secondary homes rate
type: DataService
description: The apartment inventory map service shows the status in blue primer of the municipalities that are subject to the building regulations of the Second Housing Act (ZWG, SR 702) and are only allowed to set up second homes under strict conditions (ZWG Art. 7ff.). The Second Homes Act defines the limit… @de
description: This API provides a map service showing municipalities subject to the Swiss Second Homes Act (Zweitwohnungsgesetz, ZWG, SR 702), which restricts the construction of second homes in municipalities where the share of secondary residences exceeds 20 percent. Municipalities affected are highlighted, and the underlying housing inventory data indicates the secondary-home rate per municipality. It is published by the Swiss Federal Office for Spatial Development (ARE), part of the Swiss Confederation, and covers the national territory. The service supports planning authorities, municipalities, and property developers in determining whether building permit restrictions under the ZWG apply to a given location.
endpoint URL: https://api3.geo.admin.ch/rest/services/api/MapServer/ch.are.wohnungsinventar-zweitwohnungsanteil
landing page: http://data.europa.eu/88u/dataset/ed80ebde-99a0-4523-bc8a-4ec23426d966-bundesamt-fur-raumentwicklung-are
spatial: CHE
keyword: housing
keyword: legislation
keyword: geospatial
access rights: PUBLIC
issued: 2026-06-29T02:44:56.284Z
modified: 2026-08-16T15:28:48.529Z
is part of: catalog

Swiss Confederation
type: Organization