The 22 checks

CriterionWhat it tells youOfficial source
01 · Building condition assessmentResult, defects and deadlines of the registered inspection (Complete report only)Regional registers of the Valencian Community, Basque Country and Madrid
02 · Risks by year of constructionWhich problems are common in a building of that yearCadastre and indicative table by period
03 · AluminosisProbability level in words, with the reasonCadastral year, registered inspection and documents you provide
04 · AsbestosWhether it may be present given the year of constructionYear of construction
05 · Cadastral recordUse, floor area, year, units and plot planSpanish Directorate-General for the Cadastre
06 · Energy efficiencyRating, consumption and emissions of the registered certificateRegisters of the Valencian Community and the Basque Country
07 · Price and marketValuation figures, reference rent and indicative purchase costsSpanish Ministry of Housing and Notaries' Statistical Portal
08 · Land historyAerial photographs of the same spot over the decadesIGN, historical PNOA
09 · Land classificationPlanning class of the land and plan in forceUrban Information System (SIU)
10 · Flood riskWhether the plot is in an official flood zoneMITECO (SNCZI); PATRICOVA in the Valencian Community
11 · Geology and drainageWhat ground lies beneath and which watercourses are nearIGME and IGN
12 · SeismicitySeismic acceleration of the area and the code in force when it was designedIGN
13 · Ground movementWhether the ground is sinking or rising, measured by satelliteCopernicus EGMS
14 · Surroundings and noiseOfficial noise and distance to road, railway and airfieldStrategic noise maps and OpenStreetMap
15 · Site constraintsNearby watercourse, high-voltage line and industrial estateIGN and OpenStreetMap
16 · Industrial facilitiesRegistered industry nearby and its distancePRTR-Spain and E-PRTR
17 · Recorded crimeCriminal offences per 1,000 inhabitants against the national averageSpanish Ministry of the Interior and INE
18 · Hours of sunlight per façadeDirect sunlight on each façade in summer and winterOwn calculation on Cadastre data
19 · Roof solar potentialRoof irradiation and indicative outputIGN
20 · Climate and light pollutionClimate normals and night-time lightAEMET and VIIRS
21 · WildfiresRecorded fires and nearest woodlandEFFIS, wildfire statistics and OpenStreetMap
22 · Radon gasRadon potential of the areaSpanish Nuclear Safety Council and Building Code

How to read the report

  1. The essentials

    Conclusion, findings and limits on one screen.

  2. The checks, line by line

    The rating and verdict of each check.

  3. Each check

    The figure, its source, its date and the image.

  4. Points to check

    What to ask before making an offer.

What each colour means

✓ No alert
The source responded and nothing calls for action. It does not promise there is no risk at all.
⚠ Worth noting
There is a figure worth reviewing before you buy, and the report says which one.
○ No data
The source did not respond, does not cover the area or holds no record: it is not a good result.
○ Not checked yet
Public transport and nearby schools do not have a connected source yet: the report never shows them as a result or counts them as good.

1. The essentials

The report opens with a one-screen summary: one sentence with the overall conclusion, up to three findings grouped as «worth noting», «good to know» and «no data», the reference price if there is one, and one sentence on the limits.

The summary is written automatically from the checked facts: it adds no figures, sources or dates that are not in the checks. Paid reports also include, shortly afterwards, a separate AI summary: the priorities in plain language, with the defects recorded by the building inspection if there is one, to read on screen or download as a PDF.

2. The checks, line by line

Next comes a table with all twenty-two checks in a fixed order: number, name, short verdict with its rating and the key figure where there is one. It is the quickest way to see what deserves a closer look.

You can see it with your own building's real data in the free report, before paying anything, or browse the sample report of a flat in València.

3. Structure and aluminosis

Checks 01 to 04 cover the building. Check 01 brings together the result of the building inspection (ITE or IEE) held in the regional register, with its defects and deadlines; today it is available in the Valencian Community, the Basque Country and Madrid, and only in the Complete report.

Check 02 explains which problems are common in a building of that year, 03 gives the probability level of aluminosis in words (never as a percentage) and 04 says whether asbestos may be present given the year of construction.

4. Building and home

Check 05 shows the cadastral record with the plot plan; 06, the rating, consumption and emissions of the registered energy certificate where the register can be consulted (Valencian Community and Basque Country); and 08, aerial photographs of the same spot in different decades, to see how the area has changed.

Anything a source does not hold is not filled in: it shows as «no data».

5. Ground and natural hazards

Checks 10 to 13 look at the ground: official flood zone (plus the regional PATRICOVA plan in the Valencian Community), geology and drainage, seismicity and ground movement measured by satellite. Check 18 calculates the hours of sunlight on each façade, 19 the roof's solar potential and 22 the radon potential given by the Spanish Nuclear Safety Council.

A source that does not respond shows as ○ no data: no value and no conclusion.

6. Price, surroundings and land

Check 07 shows official valuation figures, the reference rent for the area, indicative purchase costs and a link to the notarial price. Check 09 gives the planning class of the land; 14 to 17, noise and distances to infrastructure, nearby site constraints, industrial facilities and recorded crime; 20, climate and night-time light; and 21, wildfires.

The report does not calculate a target price or a discount; the thresholds that trigger a ⚠ are editorial and are explained in each check.

7. Points to check

A list of up to eight concrete actions: those that come from a ⚠, with the figure behind them, and those worth doing in any purchase or because an important source could not be consulted.

They tell you what to ask the seller, the owners' association or a surveyor at the viewing.

8. Methodology, sources and images

At the end, a table with the official source, the date of the data and the status of each check, and the list of sources with their licence. Images (aerial photographs, cadastral plan, flood zones, satellite points) carry their attribution.

Limits: the report is built from official records and is no substitute for an on-site technical inspection, a valuation or professional advice. The link is private and expires.

Short answers

What is the difference between the Essential and the Complete report?

The Complete report adds check 01 with the registered building inspection: result, defects, deadlines and validity. It is only offered when the regional register holds one; otherwise the Essential report brings all the other checks.

Does the report include the nota simple?

No. The nota simple (the Land Registry extract) tells you who owns the property; HOUSINGFAX tells you what state the building is in. You request the nota simple from the Spanish Land Registry.

What does «no data» mean on a check?

That the source did not respond, does not cover the area or is not connected yet. It is neither a good nor a bad result: the report says so and, if it matters, adds it to the points to check.

In what format do I receive the report?

As a private web page and a PDF, with a link sent to your email if you give one. The free report is a web preview only, without a PDF.

Can I see a report before paying?

Yes. The sample report is a real case with identifying details blurred, and the free report shows the rating of every check for your own building.

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.