Access all Cadastre data with a simple and powerful API

The easiest and most documented way to integrate cadastral data into your applications. Query provinces, municipalities, streets, properties and coordinates with a single REST API that returns well-structured and clear JSON responses.

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Complete access to Cadastre data

Our API provides you with access to all Cadastre services in a simple and documented way. No complications, no SOAP, just REST API with well-structured, consistent and easy-to-process JSON responses.

Access provinces, municipalities, streets and numbers with search by name or code. Get the complete directory with well-structured data and clearly defined fields.
Query cadastral information of properties by address or cadastral reference. Receive structured data with use, surface, construction year and more information clearly organized.
Convert geographic coordinates to cadastral references and vice versa. Receive clear responses with precise coordinates and well-formatted references.

request-example.js

const response =
await fetch('https://catastro-api.es/api/rc',
{
  method: 'GET',
  headers: {
    'x-api-key': 'TU_API_KEY'
  },
  params: {
    'rc': '2749704YJ0624N0001DI'
  }
}
);

const data = await response.json();
console.log(data);

data.json

Expand JSON

Embedded search widgets for your website

Integrate the three playground search tools on your site with an iframe. No custom backend.

Copy an HTML snippet and publish it on any website. The widget loads from our servers.
Address, map and cadastral reference—the same search tools as in the playground.
Choose the initial tab, language and light or dark theme from the widget URL.

Embedded widget

Beta

Preview on your website

This feature is in beta. The API and behavior may change.

https://yoursite.com

Iframe code

<iframe
  src="https://catastro-api.es/en/embed/widget?key=pub_..."
  width="100%"
  height="720"
  style="border:0;background:transparent;color-scheme:normal;"
  loading="lazy"
  title="CatastroAPI cadastral search"
></iframe>

View search tools View documentation Get Embed Key

Clear and complete documentation

Forget about spending hours trying to understand poorly documented APIs. Each endpoint is explained in detail with real examples and practical use cases. In addition, we have Swagger documentation to visually explore the API and a collection ready to import into Postman.

Explore and test all endpoints directly from your browser. Integrated Swagger UI and Postman collection available.
Practical examples and real use cases for each endpoint. Clear and detailed documentation that allows you to implement quickly.
Have questions? Our support team is ready to help you integrate the API into your project.

Interactive Documentation

Detailed endpoints and schemas

GET /api/callejero/inmuebles-rc

Gets cadastral information by cadastral reference

rc requiredstring

Cadastral reference to query (14 or 20 characters)

Response schema

direccion:string

provincia:string

municipio:string

superficie:number

View documentation

Designed for modern developers

Forget about the complicated SOAP services of the Cadastre. Our modern REST API allows you to integrate cadastral data in minutes, not days, with clear and well-structured JSON responses.

REST endpoints with clear, consistent and well-structured JSON responses. Each field is clearly defined and documented. Forget about XML and SOAP, use what you already know.
Explore all endpoints with our interactive documentation. Test queries directly from the browser.
You only need an API Key in the header. No complicated OAuth, no tokens that expire every hour.

Real-Time Monitoring

Complete history of your requests

1,247

Total requests

342

This month

9,658

Remaining

Endpoint	Status	Time
GET`api/rc`	200	Now
GET`api/callejero`	400	3 min ago
GET`api/coordenadas`	200	8 min ago
GET`api/rc`	200	15 min ago

View all

Everything you need to work with the Cadastre

We have simplified access to Cadastre data so you can focus on building your application, not understanding complex services. All responses are structured clearly and consistently.

Province and Municipality Search

Get the complete list of Spanish provinces and their municipalities with official INE and Cadastre codes, organized in a clear and easy-to-process JSON structure.

Street and Road Query

Access the complete street directory of any municipality with well-structured data. Search by type of road (street, avenue, square) and name, receiving clear and organized responses.

Cadastral References

Get the cadastral references associated with a specific address with all their details clearly and structurally organized in JSON format.

Integration-ready data

Consistent, well-structured JSON responses designed to integrate easily into web, mobile and backend applications.

Coordinate Conversion

Convert between geographic coordinates and cadastral references in both directions with structured and clear responses. Supports multiple reference systems with well-organized data.

Query by Codes

All endpoints available by both denomination and official codes for maximum flexibility. Receive structured and consistent responses regardless of the query method.

Use Cases

Build real solutions with our API

Discover the different applications and use cases where our Cadastre API can help you create value and automate processes.

Real Estate Platforms

Integrate cadastral data in real-time into your real estate portal. Display detailed property information, surfaces and technical characteristics for each property.

Valuation Apps

Get cadastral references from GPS coordinates to value properties in real-time. Perfect for mobile appraisal apps.

Market Analysis

Massively query cadastral references for real estate market studies. Automate data collection for statistical analysis and reports.

Municipal Management

Integrate cadastral information into public management systems. Facilitate administrative procedures and improve citizen service with updated data.

GIS Systems

Geolocate plots and properties in map viewers. Compatible with Leaflet, Google Maps and other digital mapping platforms.

Real Estate CRM

Automatically enrich your property data. Complete records with official cadastral information without manual intervention.

Ready to integrate CatastroAPI into your application?

Start with our free trial without the need for a credit card. Get your API Key and make your first query in less than 5 minutes.

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