A building age certificate documents the estimated completion date, configuration, and verifiable floor areas of an existing building. Its content should be adapted to the specific procedure and supported by an on-site inspection and the available documentation.

What is a building age certificate?
It is a document issued by a qualified professional that describes an existing building and explains, based on the evidence and records reviewed, when it is considered to have been completed. It may be requested for notarial or Land Registry procedures, to clarify documentary discrepancies, or as part of other administrative files.
The first question should always be: what procedure is the certificate needed for? The required information is not always the same. Before preparing it, it is advisable to review the requirements indicated by the notary, Land Registry, cadastral authority, or public administration that will receive the document.
Important: proving age is not the same as legalizing the building
The certificate records physical and chronological facts that the professional can verify. By itself, it does not grant a permit, automatically change cadastral or Land Registry records, or guarantee that the construction complies with planning regulations. If there are extensions, changes of use, or undocumented structures, it may also be necessary to review their planning status and the applicable procedure.
What is checked during the work
When can it be useful?
- Declaration or documentary update of an existing building.
- Property sales, inheritance, or financing where the age of the building needs to be demonstrated.
- Discrepancies between the built condition and the cadastral or Land Registry description.
- Administrative files where it is necessary to distinguish the original construction from later extensions.
- Preliminary studies for legalizing extensions or a technical review before purchase.
Recommended documentation
For an initial review, it is usually useful to provide the address or cadastral reference, a recent Land Registry extract, deeds, plans, permits, old receipts, photographs, and any available municipal records. You do not need to have everything before making an inquiry: the first step is to identify what is missing and what can be obtained from official sources.
How the commission is carried out
Frequently asked questions
Can a building age certificate be used to legalize a home?
Not by itself. It may form part of the documentation in a broader file, but feasibility and the required procedure depend on the planning regulations, the type of work, and the procedure being requested.
Do cadastral and Land Registry records prove exactly the same thing?
No. They are different sources and may contain different dates, uses, or floor areas. The technical work should identify those discrepancies and explain which information can be verified.
Is an on-site inspection necessary?
Normally, yes. The professional needs to verify that the existing building corresponds to the description being certified and identify any relevant differences.
Can I request an initial assessment before gathering all the documents?
Yes. With the location, cadastral reference, and an explanation of the procedure, an initial review can be carried out and the documentation that needs to be requested can be defined.
Ask about a building age certificate
If you need to document the age of a home, commercial unit, or other building in Murcia, send the location or cadastral reference and explain which procedure requires it. I will first review the appropriate scope.
