Data sources

geopool combines public Swiss geodata with figures Aireon derives from it. This page lists what each layer and panel section is based on.

Parcels

Parcel boundaries, parcel area and the federal parcel identifier (EGRID) come from the official cadastral survey (AV) kept by the cantons.

Buildings

• Footprints come from the cadastral survey (AV).
• Volume and height come from a 3D reconstruction of each building (roofer, LoD2.2) where available. Older measurements used swisstopo swissBUILDINGS3D. Without a 3D measurement, the volume is estimated from footprint times height, or taken from the building register. The map legend marks estimated buildings with a lighter outline.
• Register data (building and dwelling details, registered volume, municipality number) comes from the Federal Register of Buildings and Dwellings (GWR).
• The Detailed 3D view streams swisstopo swissBUILDINGS3D models with real roof shapes.

Zoning and utilization

The canton's zone code and the local zone are shown for each parcel. From the zone rules and the existing buildings, Aireon estimates the current utilization, the building volume ratio, the site coverage ratio, the maximum allowed volume and floor area, and the remaining (unused) building volume. These are estimates to compare parcels, not a building permit assessment.

Noise

Road and railway noise levels in dB(A), for day and night, come from the federal sonBASE noise model and are averaged over the parcel.

Travel times and taxes

• Travel time to the nearest agglomeration center, by car and by public transport, in minutes.
• Income tax rates of the municipality for four household types (single, single parent with one child, married couple, couple with two children), in per mille and as an estimated annual amount in CHF.

Basemaps

Streets and satellite basemaps, and the swisstopo national map, served through the federal geoportal geo.admin.ch.

Canton and municipality statistics

The parcel statistics pages count the parcels of the cadastral survey (AV) per municipality and canton, group them by the municipal zone designation and add building and dwelling counts from the building register (GWR). Municipalities follow today's official numbering. These are derived figures for orientation, not official statistics of the Federal Statistical Office.