Restoring a ruin or an old farmhouse on rustic land in Spain
In much of Spain you cannot put up a new house on rustic land, or only on very large plots. Restoring a building that already stands is often the only legal way to live there. But not every building qualifies.
What some of the laws say
- Catalonia: the masías and rural houses the town plan lists in its catalogue can be rebuilt and restored, including as homes (DL 1/2010, arts. 47 and 50). If it is not listed, no.
- Madrid region: existing buildings can be restored to preserve them, including as homes, even when they no longer fit the plan, with the extensions needed to make them habitable (Ley 9/2001, art. 29.3.f).
- Extremadura: a traditional building more than 30 years old when the law came into force (2019) can be restored on its plot even below 1.5 ha, if the plot was not divided in the five years before (Ley 11/2018, art. 70.3).
- Canary Islands: buildings of ethnographic or architectural value can be restored or rebuilt, including as homes, against a guarantee of 15% of the cost (Ley 4/2017, art. 60).
Other regions set their own terms and the town plan decides: each region's rule sums up what can be built new.
What to check about the building
- That it is legal. Built with a licence, or before one was needed. Being in Catastro does not prove it.
- What still stands. Walls, roof, floor area. A ruin with no walls may not count as an existing building.
- Whether it is "fuera de ordenación". A building that does not fit today's plan only allows certain works.
- What it was used for. Turning a store or a stable into a home is a change of use that needs permission.
Each plot's report in the map shows what Catastro records as built: use, floor area and year.
What to ask before buying
The town hall for a certificado urbanístico stating whether the building can be restored, and for what use. The seller for the licence or the date it was built, and the nota simple. An architect for a visit before the deposit.
Laws read on 9 October 2026. Information, not advice: the town hall has the final word.