Hello everyone, I’m new to Spain and have recently been looking at properties. I’ve noticed that the information provided by many real estate agents or landlords sometimes doesn’t match the reality, especially regarding the specific layout and usable area of the property. I did some research on how to check the official registration information for Spanish properties and wanted to share my findings here. I hope this can help others facing the same confusion.
Key Tools: Nota Simple and Catastro
In Spain, if you want to get the most authoritative and detailed information about a property, you mainly rely on two official systems: the ‘Simple Informative Note’ (Nota Simple) issued by the Property Registry (Registro de la Propiedad), and the public information from the Cadastre (Catastro). The information from these two systems can be cross-referenced to give you a complete picture of the property’s status.
Nota Simple: The Definitive “Property ID”
Nota Simple is the most important document for understanding the property structure and its overall legal status. You can think of it as the property’s ‘ID card’. It provides detailed records of:
- Property Description: This is the most critical part! It specifies the property’s address, usable floor area (superficie útil), and built area (superficie construida). Often, the area quoted by agents is the built area, but what we can actually use is the usable area. It will also describe the number of rooms and bathrooms, and whether it includes a storage room or a garage.
- Ownership: You can clearly see who the owner of the property is, how many people co-own it, and the share each person holds.
- Debts and Encumbrances (Cargas): This is extremely important
! You can check if there are outstanding bank mortgages on the property, if it has been seized by a court, or if there are unpaid taxes. If you see any records here, you must be extra cautious.
How do you get a Nota Simple? The most convenient way is to apply online through the official Registradores de España website. You’ll need to provide the property’s registration data or its exact address. It usually costs a few euros, and you’ll receive the PDF file within 24-48 hours, which is very convenient.

Catastro: The “Household Registry” on the Map
The Cadastre’s website is another super useful and free tool. It’s more like a geographic information system (GIS)
where you can directly locate any building on the map.
| Item | Key Information |
| Cadastral Ref. | Each property has a unique “ID number” (Referencia Catastral) used to look up all its details. |
| Year Built | You can see the year the property was constructed, helping you determine its age. |
| Floor Plan | The website provides a basic layout diagram, giving you a general understanding of the building’s structure. |
| Assessed Value | This is the government’s official valuation (valor catastral), used as the basis for calculating property tax (IBI). |
Using the Catastro, you can visually see the property’s location, floor level, and year of construction, and even get a rough estimate of the annual property tax. By combining its data with the Nota Simple, you can build a very complete profile of the property. In short, whether you’re buying a house or renting a long-term apartment in Spain, checking this information yourself will give you peace of mind and help you avoid future disputes. I hope this information is useful to everyone!