Terrao · Sources and notice

Independent, unofficial app

Terrao is an independent, unofficial app. It does not represent any public administration and is not affiliated with, sponsored or endorsed by Spain's Instituto Geográfico Nacional, the Dirección General del Catastro, the FEGA or any other body. Measurements are for guidance only and do not replace official information or a land survey.

Data sources

The public information Terrao shows comes from these sources, where you can look it up directly:

• Aerial imagery and maps: Instituto Geográfico Nacional (PNOA) · pnoa.ign.es
• Cadastral parcels: Dirección General del Catastro · sedecatastro.gob.es
• SIGPAC plots: FEGA, Spanish Ministry of Agriculture · sigpac.mapa.gob.es
• GNSS corrections: IGN GNSS network · ign.es
• France: IGN Géoplateforme · geoservices.ign.fr · Cadastre · cadastre.data.gouv.fr
• Netherlands: PDOK · pdok.nl · Kadaster · kadaster.nl

What Terrao does

It measures parcels, areas and distances on aerial imagery from public data, and shows the cadastral parcel or the SIGPAC plot of a point with one tap.