Referencia Catastral — Spanish Property Glossary

The referencia catastral is a unique 20-character alphanumeric code assigned to every property in Spain by the Catastro (land and property registry). It serves as the property's official identification number for tax and administrative purposes. The reference is composed of several segments encoding the province, municipality, zone, plot, and specific unit within a building. You can find a property's referencia catastral on IBI receipts, the escritura, or by searching the Catastro website (sedecatastro.gob.es) using the property address. The referencia catastral is essential for tax filings, utility connections, and verifying that the physical property matches official records. When buying, always check that the referencia catastral matches the property being sold and that the Catastro description (size, number of rooms, boundaries) is accurate. Discrepancies between the Catastro and the Land Registry are common, especially for older properties or those that have been extended without proper permissions. Resolving these discrepancies may require a surveyor and additional documentation.