The owners have lived in their cortijo for years. They receive their IBI bill, the house appears on the Catastro map and the electricity bill arrives every month.
Then they decide to sell.
A buyer starts asking questions about the paperwork, and suddenly there’s a conversation about an AFO. The owners are surprised. As far as they’re concerned, the house has always been there, the authorities know about it, and all the bills have been paid.
It’s an understandable reaction. When a property appears in official records, it is easy to assume that everything relating to the house has already been checked and approved. But the different records in Spain serve different purposes, and one document rarely tells the whole story.
That doesn’t automatically mean there is a problem with the property. It does mean that it is worth understanding what each document actually tells you.
First, what is the Catastro?
The Catastro is an administrative record of property in Spain. It contains information such as a property’s location, boundaries, surface area, buildings and recorded use. It is also used for tax purposes, including the calculation of IBI.
You can look at a Catastro record and see a building marked on a rural plot. You may even see a description that refers to residential use.
That is useful information. But an entry on the Catastro is not, by itself, proof that a building has the necessary planning permissions or that its current use complies with planning rules.
Think of it as one part of the picture. It tells you what has been recorded for Catastro purposes; it does not answer every question about how or when the house was built.
And what about the property registry?
The Registro de la Propiedad, or property registry, is a separate record. Among other things, it contains information about registered ownership, the description of the property and registered charges.
The Registro and the Catastro do not always describe a property in the same way. A building may appear on one record and not the other, or the recorded sizes may differ. A house may also have changed over the years without every change appearing in both places.
A difference does not tell you, on its own, why it exists or how difficult it will be to resolve. The first step is to compare the records with what is actually on the land, then establish what needs further investigation.
This is often where an owner discovers that the “house” they have thought of as one property contains several different pieces of history: the original building, an extension, a converted store room, a pool or an outbuilding. Each may need to be considered separately.
So where does an AFO come into it?
AFO stands for asimilado a fuera de ordenación. You may also hear people refer to a DAFO.
In Andalucía, the AFO process concerns the administrative recognition of the status of certain buildings that do not comply with current planning rules and for which, subject to the applicable legal conditions, the administration can no longer order restoration of planning legality.
The detail matters here. An AFO is not the same thing as an original building licence, and it should not be described as a document that simply makes every part of a property legal.
It can, however, be an important part of understanding and documenting the position of an eligible property. The application is made to the town hall where the property is located, with the required supporting documentation.
Not every rural building needs an AFO, and not every building will qualify for one. Some properties have other evidence of their planning status. Others may have features or circumstances that need closer examination before an application is possible.
That is why the right question is not simply, “Does the property have an AFO?”
A better starting point is: “What is the planning position of the buildings that actually exist, and what evidence do we have?”
“But we’ve been paying IBI for years”
We hear versions of this question regularly, and it is a reasonable one.
Paying IBI means that the property is being taxed. It is an important part of ownership, but a tax bill does not replace a planning licence or settle whether later building work was authorised.
The same applies to utility bills. Having an electricity or water account tells you something useful about the property’s services. It does not, on its own, answer every planning question about the buildings.
There may be perfectly valid explanations for the documents an owner has. The point is to check what those documents establish, rather than expecting one piece of paperwork to answer everything.
Does an AFO cover the whole property?
That depends on what was assessed and what the town hall’s decision actually says.
Imagine a cortijo with a main house, a pool and a separate building used as a guest room. If someone says, “The property has an AFO,” it is still sensible to ask for the decision and the accompanying plans. Which buildings or works were included? What use is recorded? Has anything changed since it was issued?
A document that relates to the main house should not automatically be assumed to cover every later addition. Likewise, a property’s position can differ from that of a neighbouring cortijo, even when the two look very similar.
If your plans involve changing the use of a building, extending it or carrying out works, take advice before committing money. The permitted work and approval route depend on the circumstances. For example, the Junta’s published guidance distinguishes a change of use in an AFO building on rural land from some smaller works.
What if you want to sell?
The most useful time to look at the paperwork is before the property goes on the market.
That gives you a chance to compare the records, identify anything that needs an explanation and find out what your realistic options are. It also gives you time to speak with the appropriate professionals rather than trying to answer difficult questions while a buyer is waiting.
A buyer may ask for:
- The title deeds and an up-to-date registry extract.
- The Catastro record and plan.
- Any planning licences, certificates or town hall decisions you hold.
- Documents relating to extensions, a pool or other buildings.
- Information about access, water and utilities.
- An existing AFO decision and its plans, if there is one.
You may not have every document to hand, particularly if you bought the property many years ago. That is a reason to start gathering information, not a reason to panic.
It is also worth remembering that not every discrepancy can be dealt with in the same way. Sometimes a record needs correcting. Sometimes a technician needs to establish what exists and when. In other cases, there may be a restriction or a problem that needs to be explained honestly to a prospective buyer.
What if you are buying?
A beautiful rural property can make it tempting to focus on the view, the olive trees and where the table will go on the terrace. Those things matter. But before you commit, make sure somebody is also looking at the property you are buying on paper.
Ask for the documents early and allow time for proper checks. If you have a particular plan for the property—renovating an outbuilding, adding a pool or using it for holiday accommodation—explain that plan from the start. The fact that a building exists does not automatically mean it can be used or changed in the way you hope.
A legal or planning review and a physical survey answer different questions. One looks at the property’s documentation and status; the other looks at its physical condition. Depending on the property, you may need both.
And if you are being asked to sign a reservation or pay a deposit, have the paperwork and proposed terms reviewed before you do so. The protections you need depend on the property and the agreement.
Where should you start?
Start by bringing together what you already have: your deeds, the most recent IBI bill, the Catastro reference, any plans and any correspondence or decisions from the town hall.
Then make a simple list of what is physically on the land. Include the main house, extensions, pools, terraces, stores and other buildings. Note any changes made during your ownership and find the paperwork you have for them.
The aim at this stage is not to diagnose the property yourself. It is to give the people checking it enough information to see where the questions are.
At Solving Spain, we help owners and buyers make sense of rural property paperwork, understand when an AFO may be relevant and coordinate the next steps with the appropriate professionals. If you are considering selling, or you have found a rural property you would like to buy, get in touch and tell us what you already know. We can help you work out where to begin.













