Register Value ≠ Truth
An entry in the Federal Register of Buildings and Dwellings (GWR) is a reported figure — not a truth verified on site. The year of construction, the energy source, or the number of dwellings can differ from reality if a change was never reported. This page explains what the register value states, what it doesn't, and how alpflo makes the origin of every fact visible.
This page explains publicly accessible registers and does not constitute tax, legal, construction, or financial advice. Consult a qualified professional for legal or tax questions.
Before you buy, you want to know what a figure rests on. Whether a number is reported, measured, or modelled determines how much trust it deserves — which is exactly what an alpflo report makes visible for every fact.
The Federal Register of Buildings and Dwellings (GWR) records base data for every building — year of construction, category, energy source for heating and hot water, number of dwellings. These entries come from reports by municipalities, developers, and owners and are available through the open Federal Statistical Office layer.
Source: Federal Register of Buildings and Dwellings (FSO) · Glossary: GWR
Register data is reported, not checked on site. An energy source recorded in the GWR can be out of date if the heating was replaced but never re-reported. alpflo therefore presents such fields as “on record” — a statement of the register, not a verified truth.
Every fact in an alpflo report carries an honesty state. A reported register value shows as “On record”, a missing one as “None recorded”, one derived from a model as “Modelled”, and one that cannot be retrieved as “Could not resolve”. So you never mistake a report for a measurement.
Source: How alpflo works
The register value is not a property valuation or market value. alpflo deliberately estimates no prices — specialised providers do that. The report shows what is officially recorded and makes the origin of every fact transparent, instead of asserting a number.
Every fact in an alpflo report carries exactly one of these states — so you can see at a glance what's documented and what isn't.
Confirmed in an official Swiss register. Direct source.
Register queried; nothing on this parcel. The absence is documented.
Derived from a model or an API: real, but not directly from the register. Please verify.
Hit an edge case. Stated honestly at the boundary, never silently discarded.
Is the register value the value of my property?
No. The register value refers to the factual data recorded in the Register of Buildings and Dwellings, not a market or fair value. alpflo produces no property valuation.
Why can a register entry be wrong?
Because register data is reported, not checked on site. If a heating system is replaced but not re-reported, for example, the old energy source stays in the register.
How do I know whether a fact is documented?
By its honesty state: “On record” means reported, “None recorded” means no entry, “Modelled” means derived from a model, “Could not resolve” means currently unavailable.
Does alpflo use the protected GWR data?
No. alpflo uses only the publicly accessible GWR layer (Level A) — never the access-restricted register.
See a full report
First check the public sample report — a complete alpflo report with all four states, no sign-up. Then create your own report for a Swiss address in the app.
No subscription · 49 CHF per report · the sample report stays free.