API for professionals

Analyse parcels and buildings via API, with official data

Integrate Hogarfax's analysis into your system with a REST API: send a cadastral reference or coordinates and receive cadastral identity and geometry, buildings (footprint, floors and gross floor area), natural hazards, land classification, easements and connectivity, with the official publisher behind every data point. Each report is available as structured JSON and as a PDF.

Request access

REST · JSON + PDF · Source per data point · Volume per contract

What the API solves

A complete report per parcel

For each cadastral reference or pair of coordinates, the API returns a structured report: cadastral identity, geometry, uses and units, buildings, 15 hazard and constraint assessments with their status, and the parcel's connectivity.

Cadastral reference or coordinatesStructured JSONPDF report

Built for screening and decisions

Every assessment carries a homogeneous status (clear, caution, alert) and the measured facts behind it: distances, names, official classes and statistics, so you can filter and prioritise sites in your own platform.

Status per assessmentMeasured factsDistance to motorway, rail and substation

Full traceability

Each report lists the official sources it used, with its publisher and licence. Nothing is inferred from photos or satellite imagery: everything is auditable, as professional use requires.

Source per data pointLicence of each sourceOfficial data

One request, the full report

Real excerpt of a response for a logistics warehouse in Illescas (Toledo). The complete OpenAPI specification is provided with access.

POST /api/v1/site-reports
# Request (asynchronous: returns 202 and an id)
POST /api/v1/site-reports
{ "cadastral_reference": "8931924VK2483S" }

# GET /api/v1/site-reports/{id} → result (summary)
{
  "property":  { "plot_area_m2": 7428, "primary_use": "industrial" },
  "buildings": { "gross_floor_area_m2": 4800, "max_floors_above_ground": 2 },
  "assessments": [
    { "key": "river_flooding", "status": "clear", "sources": ["fluvial_t100"] },
    { "key": "radon", "status": "caution", "facts": { "regulatory_zone": 1 } }
  ],
  "connectivity": {
    "nearest_high_capacity_road": { "name": "A-42", "distance_m": 333 },
    "nearest_electrical_substation": { "distance_m": 1219 }
  }
}

Who it is for

Logistics and industrial

Site screening: land, buildings, hazards and distance to motorway, railway and power grid.

Funds and investment managers

Acquisition due diligence with traceable official data, integrated into your platform.

Banks and servicers

Collateral and asset review with the physical-risk and land layer.

Appraisers and insurers

Risk annex and flood and fire exposure inside your workflow.

Every data point cites its official source

The API runs on the same engine as the Hogarfax report, with a response designed for integration: homogeneous statuses, measured facts and the source of every data point. It covers the common-cadastre territory (DGC); Navarre and the Basque Country keep their own foral cadastres and are outside the current coverage. It complements a technical survey, a planning certificate or a Land Registry extract: title and charges are not part of the report.

Frequently asked questions

What does each query return?

Cadastral identity and parcel geometry, uses and units, buildings (footprint, floors above and below ground and official gross floor area), hazard and constraint assessments (flooding, wildfire, seismic, radon, land classification, watercourses, coast, power lines, livestock trails, industrial sites, dams and municipal crime) and connectivity (motorway, railway, substation, airport and industrial land), each with its source. The report is also delivered as a PDF.

Can I analyse many properties?

Yes. Requests are processed asynchronously, and volume, rate limit and quota are set in the contract. Usage is metered per distinct property: repeating a property or a failed request does not count.

How do I get access and how much does it cost?

Access is agreed per case according to volume and intended use. To evaluate the API we provide a test key with a limited number of properties.

Does it include ownership?

No: cadastral ownership is protected data. For shortlisted properties you can request the Land Registry extract (nota simple) directly, or commission our registry study, which interprets it, translates it and integrates it into the report.

Request API access

Tell us your volume and use case and we will propose the technical and commercial fit, with test access to the API.

Request access

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