Public methodology

Every figure should be verifiable.

TrustHuus keeps official data, modelled values, publicly evidenced statements, verified information and unknown fields separate. V1 does not create an opaque score or treat missing data as a positive result.

Official

Loaded from a public authority and shown with its date and spatial resolution.

Modelled

Calculated on a geographical grid; not a measurement inside the building.

Not available

Remains explicitly unknown. TrustHuus does not fill gaps with assumptions.

V1 source catalogue

Provenance, resolution and limitations

Building and address

Federal Statistical Office / swisstopo

Method
Live address search and retrieval of the associated Buildings and Dwellings Register record via the EGID.
Resolution
Individual building, when the field is recorded in the register.
Limitation
A blank field means “not recorded”; it does not mean that the feature is absent.
Data as of
Current register data
Open official source ↗

Road and rail noise

Federal Office for the Environment — sonBASE

Method
Modelled daytime and night-time values at the selected point.
Resolution
10 m grid, 4 m above ground.
Limitation
Not an indoor measurement and not legally binding.
Data as of
31 December 2021
Open official source ↗

Radon

Federal Office of Public Health

Method
Area-level probability of exceeding 300 Bq/m³.
Resolution
1×1 km grid.
Limitation
Not a building value; only an indoor measurement can establish the exposure.
Data as of
1 January 2025
Open official source ↗

Fibre, gigabit and 5G

Federal Office of Communications

Method
Percentage band of covered building entrances and number of outdoor 5G networks.
Resolution
Fixed network 250×250 m; mobile network 100×100 m.
Limitation
Voluntary, modelled provider data; it does not guarantee a connection or indoor reception.
Data as of
30 April 2026
Open official source ↗

Surface runoff

Canton of Zurich

Method
Modelled depth class in the P100 scenario when the point lies within a mapped area.
Resolution
2025 cantonal model.
Limitation
The absence of a mapped feature at the point is not a guarantee. The data is not a legally binding extract.
Data as of
2025
Open official source ↗

Coordinated construction works

Open Data Zurich

Method
Projects in the geographical search window, ordered by approximate distance from the address.
Resolution
Updated monthly, CC0 licence.
Limitation
Covers the City of Zurich only and includes coordinated works on public land of roughly 100 m perimeter and 30+ days. Outside the city, the source is shown as unavailable and no absence of works is inferred.
Data as of
Monthly
Open official source ↗

Organisations listing the address

Each organisation’s official website

Method
Manual check that an organisation publishes the exact address itself as a location or service point.
Resolution
Individual organisation location linked to the building by address and EGID.
Limitation
Not exhaustive and not an independent on-site inspection. A commercial-register or postal address alone is not proof of operations.
Data as of
Shown for each entry
Open evidence in the dossier

Average residential rent in the canton

UST / BFS / OFS / FSO

Method
Cantonal average, not this building’s rent or current asking rents. Excludes service and heating charges. Does not apply to shops, offices or other commercial premises.
Resolution
FSO · occupied rental dwellings · 2024 data
Limitation
Commercial rent: data unavailable. A source specific to the use and location is needed; residential averages are not used.
Data as of
2024
Open official source ↗

Shops and businesses on the map

© OpenStreetMap contributors · Geofabrik · ODbL 1.0

Method
OpenStreetMap snapshot for Switzerland. Map entries do not confirm a lease or current occupation.
Resolution
Same address listed on OpenStreetMap
Limitation
Incomplete directory, without on-site verification. Street and house number matched within 150 m; nearby businesses within 100 m. Entries without an address are not assigned to the building. Proper names remain in their original language.
Data as of
2026-09-08
Open official source ↗

No shortcuts on prices

Cantonal average, not this building’s rent or current asking rents. Excludes service and heating charges. Does not apply to shops, offices or other commercial premises. Commercial rent: data unavailable. A source specific to the use and location is needed; residential averages are not used.