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Data & method

Open geodata from the Confederation and the cantons. Our own calculation for every address.

No third-party ratings: SunPlot uses the geodata of the Confederation and the cantons to calculate what sun, shadow and location mean for an address.

Sources

Where the data comes from

Where the data comes from

Freely available, official geodata from the Confederation and the cantons — the same datasets that the Confederation and the cantons publish — supplemented by OpenStreetMap for the nearby places and by the timetable from opentransportdata.swiss.

© swisstoposwissBUILDINGS3DswissALTI3DswissSURFACE3DSWISSIMAGESFOE SonnendachFOEN noiseARE building zonesCantonal hazard mapsMeteoSwissFOT / opentransportdata.swissOpenStreetMap
All datasets with supplier, terms of use and link

All datasets used in the report are cleared for this use and are credited with their source in the report. Two datasets are shown in the app only, see below. The Confederation’s terms are available at opendata.swiss and geo.admin.ch; MeteoSwiss data under CC BY 4.0.

Terrain, buildings, aerial photo
  • swissALTI3D – terrain model 0.5 mSource: swisstopo · Terms: Free use, attribution required (opendata.swiss) · View dataset ↗
  • swissALTIRegio – 10 m elevation model for mountains and the distant horizon up to 100 kmSource: swisstopo · Terms: Free use, specific attribution required (swisstopo) · View dataset ↗Required source attribution (editions from 2025): Bundesamt für Landestopografie swisstopo; Tarquini S., I. Isola, M. Favalli, A. Battistini, G. Dotta (2023). TINITALY, a digital elevation model of Italy with a 10 meters cell size (Version 1.1). Istituto Nazionale di Geofisica e Vulcanologia (INGV). https://doi.org/10.13127/tinitaly/1.1; DGM Österreich, geoland.at; DGM1, Bayerische Vermessungsverwaltung – www.geodaten.bayern.de; DGM 1 Baden-Württemberg: LGL, www.lgl-bw.de, dl-de/by-2-0”; RGEAlti, Institut National de l’information géographique et forestière, données originales tétéchargées sur https://geoservices.ign.fr/rgealti#telechargement5m, mise à jour du juillet 2023
  • swissSURFACE3D – LiDAR point cloud (trees, vegetation)Source: swisstopo · Terms: Free use, attribution required (opendata.swiss) · View dataset ↗
  • swissSURFACE3D Raster – surface modelSource: swisstopo · Terms: Free use, attribution required (opendata.swiss) · View dataset ↗
  • swissBUILDINGS3D 3.0 – building models with roof shapesSource: swisstopo · Terms: Free use, attribution required (opendata.swiss) · View dataset ↗
  • SWISSIMAGE 10 cm – aerial photoSource: swisstopo · Terms: Free use, attribution required (opendata.swiss) · View dataset ↗
  • swissNAMES3D – names of mountains, waters and places (peaks up to 100 km, nearby lakes and rivers, neighbourhoods)Source: swisstopo · Terms: Free use, attribution required (opendata.swiss) · View dataset ↗Source attribution: © swisstopo (Federal Office of Topography swisstopo)
  • Mountain peaks in Austria – names, position and heights (prominent peaks up to 100 km)Source: BEV – Federal Office of Metrology and Surveying (Austria), digital landscape model – geographical names (“Berge mit Höhe”), as of 29.09.2025 · Terms: CC BY 4.0, attribution required · View data portal ↗Source attribution: Datenquelle: BEV – Bundesamt für Eich- und Vermessungswesen. Modified by SunPlot: selection of prominent peaks, conversion to the Swiss coordinate system.
  • Mountain peaks in France – names and position (prominent peaks up to 100 km)Source: IGN – National Institute of Geographic and Forest Information (France), BD TOPO®, updated 06/2026 · Terms: Open Licence 2.0 (Etalab), attribution with date required · View dataset ↗Source attribution: Source : IGN – BD TOPO®, mise à jour 06/2026. Modified by SunPlot: selection of prominent peaks, conversion to the Swiss coordinate system.
  • Peak heights in FranceSource: Wikidata · Terms: CC0 (public domain) · View Wikidata ↗BD TOPO® contains no peak heights. SunPlot only adopts a height if name, position and terrain model agree; French peaks without a height confirmed this way are not shown.
  • swissBOUNDARIES3D – municipal and cantonal boundariesSource: swisstopo · Terms: Free use, attribution required (opendata.swiss) · View dataset ↗
  • National map (colour pixel map)Source: swisstopo · Terms: Free use, attribution required (opendata.swiss) · View dataset ↗
  • Official directory of towns and cities (postcodes and localities)Source: swisstopo · Terms: Free use (opendata.swiss) · View dataset ↗
  • Address search and height query from geo.admin.chSource: swisstopo (geo.admin.ch) · Terms: general terms of use of geo.admin.ch (fair use) · View dataset ↗
  • Federal Register of Buildings and Dwellings GWR (public attributes: year of construction, heating)Source: FSO · Terms: Free use (opendata.swiss) · View dataset ↗
  • Federal Register of Buildings and Dwellings GWR: building status (planned, approved, under construction)Source: FSO · Terms: Free use (opendata.swiss) · View dataset ↗
  • Sectoral plan for transport, road infrastructure partSource: FEDRO · Terms: Free use (opendata.swiss) · View dataset ↗
  • Building lines of national roadsSource: FEDRO · Terms: Free use (opendata.swiss) · View dataset ↗
  • Sectoral plan for transport, rail infrastructure partSource: FOT · Terms: Free use, attribution required (opendata.swiss) · View dataset ↗
  • Sectoral plan for underground freight transportSource: FOT · Terms: Free use, attribution required (opendata.swiss) · View dataset ↗
  • Sectoral plan for aviation infrastructureSource: FOCA · Terms: Free use, attribution required (opendata.swiss) · View dataset ↗
  • Project planning zones for airport installationsSource: FOCA · Terms: Free use, attribution required (opendata.swiss) · View dataset ↗
  • Sectoral plan for transmission lines (in force and in consultation)Source: SFOE · Terms: Free use, attribution required (opendata.swiss) · View dataset ↗
  • Sectoral plan for deep geological repositoriesSource: SFOE · Terms: Free use, attribution required (opendata.swiss) · View dataset ↗
  • Wind energy plantsSource: SFOE · Terms: Free use, attribution required (opendata.swiss) · View dataset ↗
  • Building applications in the Canton of Zurich (from 2025)Source: Canton of Zurich, Statistical Office · Terms: Free use (opendata.swiss) · View dataset ↗
  • Building applications in the Canton of Geneva (last 12 months)Source: Portail des données SITG (État de Genève) · Terms: Free use, including commercial, attribution required (SITG) · View dataset ↗
  • Building applications in the Canton of Basel-LandschaftSource: Geodaten des Kantons Basel-Landschaft · Terms: CC BY, attribution required · View dataset ↗
  • Building notices of the City of BernSource: Geodaten Stadt Bern · Terms: Free use, attribution required (City of Bern) · View dataset ↗
  • Building applications in the cantons of Appenzell Ausserrhoden, Schwyz, Valais, Zug, Obwalden, Nidwalden and Schaffhausen (official gazettes, last 12 months)Source: Amtsblattportal (SECO) and cantonal official gazettes · Terms: Use permitted, including commercial, attribution and the notice “not an official publication” required (Amtsblattportal terms, section 3) · View dataset ↗
  • Population per hectare (STATPOP)Source: FSO · Terms: Free use (opendata.swiss) · View dataset ↗
  • Official cadastral survey – plot boundaries (cantons with open data)Source: Cantons / geodienste.ch · Terms: Free use, attribution required (geodienste.ch, per canton) · View dataset ↗
Sun, solar, energy
  • Solar roof and solar façade – solar potentialSource: SFOE · Terms: Free use, attribution required (opendata.swiss) · View dataset ↗
  • PVGIS – irradiation (our own solar estimate when sonnendach.ch doesn’t cover the building)Source: European Commission, JRC · Terms: Free reuse with attribution (Decision 2011/833/EU) · View dataset ↗
  • Groundwater heat potential, wind atlas, thermal networks, heat demandSource: SFOE · Terms: Free use, attribution required (opendata.swiss) · View dataset ↗
  • Electrical installations above 36 kV (high voltage)Source: SFOE · Terms: Free use, attribution required (opendata.swiss) · View dataset ↗
  • Pipelines – consultation zonesSource: SFOE · Terms: Free use, attribution required (opendata.swiss) · View dataset ↗
  • Municipal electricity pricesSource: ElCom · Terms: Free use (opendata.swiss) · View dataset ↗
  • Climate normals for sunshine duration, hail hazard, SwissMetNet measurementsSource: MeteoSwiss · Terms: CC BY 4.0 · View dataset ↗
Natural hazards
  • Cantonal hazard maps (flooding, landslide, rockfall, avalanche)Source: Cantons / geodienste.ch · Terms: set by each canton, attribution required · View dataset ↗
  • Flood hazard map Basel-StadtSource: Canton of Basel-Stadt · Terms: CC BY 4.0 · View dataset ↗
  • Surface runoff hazard mapSource: FOEN · Terms: Free use (opendata.swiss) · View dataset ↗
  • SIA 261 earthquake zones and seismic subsoil classesSource: FOEN · Terms: Free use (opendata.swiss) · View dataset ↗
  • Groundwater resources (Hydrogeological Map 1:500,000) and groundwater bodiesSource: swisstopo / FOEN · Terms: Free use (opendata.swiss) · View dataset ↗
Noise, air, other nuisances
  • Road and railway noise day/night (sonBASE)Source: FOEN · Terms: Free use, attribution required (opendata.swiss) · View dataset ↗
  • Aircraft noise – noise exposure cadastre for civil airfieldsSource: FOCA · Terms: Free use, attribution required (opendata.swiss) · View dataset ↗
  • Air quality NO₂, PM10, PM2.5Source: FOEN · Terms: Free use (opendata.swiss) · View dataset ↗
  • Major Accidents Ordinance – railway installations and operationsSource: FOT · Terms: Free use, attribution required (opendata.swiss) · View dataset ↗
  • Major Accidents Ordinance – civil airfield operationsSource: FOCA · Terms: Free use, attribution required (opendata.swiss) · View dataset ↗
  • Consultation zones along national roadsSource: FEDRO · Terms: Free use, attribution required (opendata.swiss) · View dataset ↗
  • Cadastre of contaminated sites – railways and civil airfieldsSource: FOT / FOCA · Terms: Free use, attribution required (opendata.swiss) · View dataset ↗
  • Road accidents with personal injurySource: FEDRO · Terms: Free use (opendata.swiss) · View dataset ↗
  • Mobile phone antennas, 4G/5G coverage, broadband atlasSource: OFCOM · Terms: Free use (opendata.swiss) · View dataset ↗
Planning, transport, surroundings
  • Building zones (harmonised), public transport quality classes, share of second homesSource: ARE · Terms: Free use, attribution required (opendata.swiss) · View dataset ↗
  • Cantonal PLR cadastres – land-use zones, noise sensitivity level and other restrictions on the plotSource: Cantons (PLR cadastre offices) · Terms: set by each canton, attribution required; canton’s credit line and extract date in the report · View dataset ↗
  • PLR cadastre Basel-StadtSource: Canton of Basel-Stadt · Terms: CC BY 4.0, summarised in the report · View dataset ↗
  • PLR cadastre ValaisSource: Canton of Valais · Terms: CC BY-SA 4.0, summarised in the report · View dataset ↗
  • PLR cadastre status – directory of cantonal PLR services and property identifier (EGRID)Source: swisstopo · Terms: Free use (opendata.swiss) · View dataset ↗
  • Federal inventories: BLN, mire landscapes, floodplains, dry grasslands, hunting reservesSource: FOEN · Terms: Free use, attribution required (opendata.swiss) · View dataset ↗
  • ISOS – Federal Inventory of Swiss Heritage SitesSource: FOC · Terms: Free use, attribution required (opendata.swiss) · View dataset ↗
  • Public transport stopsSource: FOT · Terms: Free use, attribution required (opendata.swiss) · View dataset ↗
  • Timetable (departures, frequency)Source: opentransportdata.swiss · Terms: opentransportdata.swiss terms of use, attribution · View dataset ↗
  • Surroundings: schools, shopping, doctors, leisure, etc.Source: OpenStreetMap contributors · Terms: ODbL, Share-alike · View dataset ↗
Only in the app, never in the report
  • Radon mapSource: FOPH · Terms: view in the app only, never in the report · View dataset ↗
  • NFI vegetation height model (comparison tool for trees)Source: WSL · Terms: ODbL + DbCL, view in the app only, never in the report · View dataset ↗

The nearby places come from OpenStreetMap (© OpenStreetMap contributors, ODbL). They are only displayed in the report and are not passed on as a dataset; we will share the method we use to prepare the extract on request.

The report summarises the information from the cantonal PLR cadastres; in the chapter “Plot and land-use planning” it states the canton’s credit line, the date of the extract, the notice text from the extract and a link to the official extract. Extracts from Basel-Stadt are licensed under CC BY 4.0, extracts from Valais under CC BY-SA 4.0; we reproduce them in summarised and therefore modified form. We do not take over any content from cantons for which use in the report is not permitted or not yet clarified; there, the report only shows a link to the canton’s PLR cadastre.

List as of 12 October 2026. We add new datasets here and in the report.

Privacy by design

In the app and in the checker, your browser does the calculating; ordered reports are created by our server. No user accounts. Coordinates are sent to federal services, to the cantons, to OpenStreetMap and to our own geodata server.

The report is non-binding additional information and does not replace an expert opinion or official information. Values are calculated, not measured.

Method

Figures and charts, calculated specially for your address

Official maps show what is there. SunPlot calculates what that means for your address: sun, shadow and view are recalculated every 10 minutes throughout the year — from terrain, building models and trees from laser scanning. The values apply to a point at the roof ridge of the building. They are calculated, not measured, and do not replace an expert opinion or official information.

The basis is freely accessible geodata from the Confederation and the cantons (swisstopo, SFOE, FOEN, ARE, cantonal hazard maps and others) as well as OpenStreetMap for the surroundings. The analysis — the sun and shadow values, the charts, the comparison — is SunPlot’s own calculation work and is created afresh for each address.

Our own calculations in detail →  ·  How it differs from the official shadow diagram →

Coverage

What’s available at your address?

Terrain, aerial photo, trees and all filter maps come from the Confederation and cover the whole country. The 3D building models with roof shapes (swissBUILDINGS3D 3.0) cover all of Switzerland; the data date varies by map sheet. Some cantonal hazard maps are not released for commercial use. The checker shows you this for every address before you buy.

Check an address now

Building models: swissBUILDINGS3D 3.0 with roof shapes, covering all of Switzerland. The data date varies by map sheet (captured 2013 to 2025); new buildings put up since then are missing from the model, so their height comes from the laser surface model instead.

Privacy

What happens to your address

In the app and in the checker, your browser does the calculating; we don’t store the addresses you enter there. Ordered reports are created by our server; for this we store the property address and coordinates together with the order. Coordinates are sent to federal services, to the cantons, to OpenStreetMap and to our own geodata server. What we store when you order, and for how long, is set out in the privacy policy.

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