grundpass v0.4

Property profile from official data

Enter an address. We show you what the federal registers know about the property.

Year of construction, parcel, noise, sun, radon. From the open registers of the Swiss Confederation and the PLR Cadastre of 25 cantons, on one page. Free, no login, no tracking.

Example: Maygutstrasse 26, 3084 Wabern. Takes about three seconds.

What you see

01 Building Year of construction, category, floors, heating, dwellings
02 Parcel Area, number, built-up share
03 Zone Zone, noise sensitivity level, cadastre entries (PLR Cadastre of 25 cantons)
04 Location Public transport access, road and railway noise with limit values
05 Sun Irradiation, roof suitability, solar yield
06 Risks Radon
07 Natural hazards Overland flow, floods (rough), seismic zone
08 Townscape and monuments Federal inventory of cultural property protection

Next to every technical term, it says what it means. And where the register has a gap, we say so instead of guessing.

Sources, all open

Address → buildingswisstopo / FSO
RBD buildings and dwellingsFSO
Cadastral survey: parcelswisstopo / cantons
sonnendach.ch: solar potentialSFOE
Public transport quality categoryARE
Radon mapFOPH
Road noise, day and nightFOEN
Railway noise, day and nightFOEN
Natural hazards (federal layers)FOEN
PCP Inventory (protection of cultural property)FOCP
PLR CadastreCantons (PLR Cadastre)
Responsible officesswisstopo (Cadastral Surveying Switzerland)

Every figure comes with its source and date. The data layer is open source.

Why does this exist?

I build software and was fed up with trawling ten federal portals for a single question: what does the state know about this property? So the answers are now on one page. For everyone, free, with the source next to every figure.

grundpass does not estimate a price. The market value is a job for a professional.

Changelog

v0.4 · 08.11.2026Valais added, PLR Cadastre in 25 cantons, live on grundpass.ch
v0.3 · 16.10.2026PLR Cadastre in 24 cantons, reading version in French, Italian and English
v0.2 · 16.10.2026Railway noise, natural hazards, cultural property, responsible offices, passport as PDF
v0.1 · 15.10.2026Address to EGID, RBD, parcel, sonnendach, public transport, road noise, radon