Código Registral Único: What it is and how to Find It

August 27, 2026

When you are going to buy, sell, or carry out any procedure related to a home, it is common to come across different property identifiers. One of them is the Código Registral Único (CRU), a code that allows a property to be unequivocally identified in the Land Registry. Knowing what the CRU is, what it is for, and how to get the CRU of a home can be especially useful when you need to consult the registry information of a property.

What is the Código Registral Único?

The Código Registral Único, also known as CRU del catastro, is a number assigned to each property registered in the Land Registry. Its main function is to establish a direct connection between the Registry and the Land Registry, avoiding duplication or errors in the identification of real estate.

Although people sometimes speak of the ‘CRU del catastro’, it is important to keep in mind that the Código Registral Único belongs to the sphere of the Land Registry. Therefore, the CRU and the cadastral reference are different identifiers, although both are used to identify a property and can be linked in certain procedures.

In other words, the CRU functions as the ID of a property: unique, non-transferable and necessary for many administrative and notarial procedures.

Differences between the CRU and the Cadastral Reference

Although often confused, the Código Registral Único (CRU) and the cadastral reference are not the same. The CRU is an identifier assigned by the Land Registry and is used in legal procedures such as deeds or mortgages. On the other hand, the cadastral reference comes from the Land Registry and is used to identify properties for tax purposes, such as the IBI.

Therefore, if you are wondering what the CRU code is and why it is key in a real estate operation, you must keep in mind that these are two different identifiers that fulfill different functions. While the cadastral reference is linked to the Cadastre, the CRU is related to the Land Registry.

Where to Find the Código Registral Único?

If you need to obtain the CRU with the cadastral reference or locate the code for a home, there are different ways to consult this information:

Deed of sale: appears in the registry description of the property.
Land Registry simple note: it also appears visibly.
Land Registry Portal: you can access the official website and, with the cadastral reference, obtain information that may include the CRU.
Land Registry: if you have any questions, you can go and request the information in person or electronically.

What is the Código Registral Único for?

The CRU facilitates the identification of a property within the Land Registry and may be necessary in different procedures related to a property. Its utility is especially relevant when registry documents, sale operations, or mortgage procedures are involved. This code is essential for:

Notarial or mortgage procedures.
Applications for housing-related aid.
Consultations or modifications in the land registry.
Verifying that a property is correctly registered.

In addition, it guarantees transparency and legal certainty in real estate operations, avoiding confusion between properties with similar addresses.

Can a property be located by its Código Registral Único?

The Código Registral Único allows a specific property to be identified within the Land Registry. For this reason, having the CRU can be useful when you need to perform a registry search or verify that the information corresponds to the correct property.

If you are looking to locate a property by its Código Registral Único, you can use this identifier in the registry procedures and consultations where it is requested. If you do not have the CRU, the deed, a land registry simple note, or the available information about the property can help you locate the necessary registry data.

Do You Need Help Locating your CRU?

If you need to know how to get the CRU of a home, check the registry information of a property, or have doubts about the different identifiers of a property, at Espígul we can help you.

We know that procedures related to a real estate operation can be complex when registry, cadastral, and notarial documentation are involved. That is why our team accompanies you throughout the process and helps you resolve your doubts in a clear and close manner.