Código Registral Único: What it is and how to Find It
August 7, 2025

When you want to consult or carry out procedures related to a property, you will often come across a key concept: the Código Registral Único (CRU). This code allows you to unequivocally identify a property in the Land Registry and relate it to the land registry information. Knowing what the Código Registral Único is and how to locate it can save you time and confusion.
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.
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, the CRU legally identifies the property, while the cadastral reference determines its physical location and value.
Where to Find the Código Registral Único?
Locating the Código Registral Único del catastro is relatively simple if you know where to look:
- 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?
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.
Do You Need Help Locating your CRU? At Espígul We Advise You
At Espígul we know that, often, real estate procedures can be complex and full of technical terminology. Therefore, if you need to know what the Código Registral Único of your property is or want to carry out any procedure related to the land registry, we can help you. Our team accompanies you in a clear and close way, resolving your doubts and facilitating all the steps.
Contact us and manage everything related to your home with peace of mind.