What each source status means

Queried
The source answered and the figure appears with its date.
No data today
The source did not answer on the day of the query; it is neither good nor bad news.
Outside coverage
The source does not cover that area, such as an inspection register outside its region.
Not available yet
The check has no source connected yet, such as asbestos, and is shown as no data.

The building: Catastro and inspection registers

The property record (year of construction, use, floor area, number of units and plot plan) comes from the open services of the Directorate-General for the Cadastre. Only non-protected data is read: never owners' names or cadastral values. In the Basque Country the record comes from the official Basque street directory and the cadastre of each provincial council.

The recorded condition of the building comes from each region's building inspection register (ITE or IEE): today, those of the Valencian regional government, the Basque Country (Euskoregite) and the Community of Madrid, in the municipalities that file their reports with it. Energy certificates are looked up in the open registers of the Valencian Community and the Basque Country; in the other regions, Catalonia included, the check shows no data for now.

The ground and natural hazards

Flood zones come from MITECO's National Flood Zone Mapping System (SNCZI) and, in the Valencian Community, also from the regional PATRICOVA plan. Seismic hazard comes from the IGN, which publishes the reference ground acceleration for each point over a 475-year return period.

Ground movement is measured by satellite through the European Copernicus EGMS service; geology, with the MAGNA map of the Spanish Geological Survey (IGME); radon, with the municipal zone set by Spain's Building Code, which is based on the CSN radon potential map; and wildfires, with MITECO statistics and Copernicus active-fire data.

The plot from the air, and the sun

Current and historical aerial photographs from the National Aerial Orthophotography Plan (PNOA) of the IGN show how the plot has changed over the years. The solar potential of the roof comes from IGN SOLAR.

Hours of sunlight per façade are our own calculation from the cadastral geometry of the building and its neighbours, using the sun's position on 21 June and 21 December. It is a calculation, not an on-site measurement.

Price, land and surroundings

Valuation figures come from the statistics of the Ministry of Housing and Urban Agenda; the reference rent, from SERPAVI, which the ministry builds from tax data on main-residence rental contracts; and the planning classification of the land, from the Urban Information System (SIU).

Climate comes from AEMET's climate normals at the nearest station; noise, from the strategic noise maps; recorded crime, from the Interior Ministry's crime report with population from the INE statistics institute; industrial facilities, from the PRTR register; and distances to roads, railways, power lines and woodland are calculated on OpenStreetMap.

Where to find the source in your report

Each check ends with a line giving its source and validity, and the “Methodology and sources” section brings together, in one table, the official source, the date of the data and the status of each query. Images carry their attribution.

You can see this in the sample report, or on your own home with the free report, which shows the traffic light of every check before you pay anything.

Limits of the sources

Each register covers what it covers. Navarre is not available yet because its cadastre is run by the regional government and is not connected, and the recorded condition of the building only exists in the three regions above. Some figures refer to the municipality or the province rather than the building, and the report says so.

We use sources whose re-use is permitted under Spain's Law 37/2007 and credit their authors. An official source describes what is on record, not the current state of the property, which is why the report is not a substitute for an on-site technical inspection of the building.

Short answers

Is the data in the report public?

Yes: it comes from open official records and services. What the report adds is bringing them together for one specific building, with dates, and explaining them in plain language.

Does the report show who owns the property?

No. Only non-protected Catastro data is read; owners, charges and mortgages are left out. The nota simple (land registry extract) tells you who the owner is; HOUSINGFAX tells you what state the building is in.

How up to date is the data?

Most sources are queried when you order the report. Statistics such as prices, rents or crime come from the latest official release, and the report states their period.

Why is the building's condition missing for my region?

Because not every region publishes its inspection register in a form that can be queried. Today the Valencian Community, the Basque Country and the Community of Madrid are connected; elsewhere the report includes all the other checks.

Which source tells you whether an area is prone to flooding?

MITECO's official flood zone maps (SNCZI) and, in the Valencian Community, the regional PATRICOVA plan as well. An area that has not been mapped is not proof that there is no risk.

Official sources you can consult

The links let you review the primary source. Their inclusion does not widen their purpose or turn a piece of context into a diagnosis.