Fine for Converting a Commercial Property to Residential Use Without a Licence in Spain

Converting a commercial premises into a dwelling is a common undertaking, especially in urban areas where land prices are high. However, the change of use requires a specific licence regardless of whether any building work is carried out. If that licence was not obtained, the council may take action.

What the law actually says

Article 11.3 of Royal Legislative Decree 7/2015 of 30 October (TRLS) establishes the duty to apply for and obtain the licences or authorisations required for acts involving the transformation or use of land and subsoil, including the change of use of properties.

Converting a commercial premises to residential use requires a change-of-use licence (or a building permit if renovation works are involved). For the change of use to be possible, the urban planning instrument must permit residential use on the floor or in the zone where the premises are located.

In many cities, local plans permit residential use on ground floors only in certain zones. If the zone where the premises are located does not allow residential use, the change of use cannot be legalised, regardless of the state of any works.

In addition, the dwelling must comply with the habitability conditions established by regional legislation (minimum clear height, ventilation, lighting, minimum room sizes, etc.).

Steps you can take, in order

1. Check whether the municipal planning instrument permits residential use on the floor and in the zone where the premises are located. This is the fundamental question. If it does not permit it, the change of use cannot be legalised.
2. Check whether the premises meet the habitability conditions required by regional legislation for dwellings.
3. If the change of use can be legalised, consider submitting a licence application. You will need a technical report demonstrating that the premises meet the habitability conditions.
4. Establish when the change of use took place and whether the violation has become time-barred.
5. Request the full case file and verify the basis for the sanction.
6. Submit written representations within the legal deadline.

Common errors made by councils

Error 1: Failing to verify whether the change of use can be legalised before issuing the restoration order. If the planning instrument permits residential use in that zone, legalisation is possible and the restoration order is premature.

Error 2: Confusing the change of use with the carrying out of works. The change of use may occur without any visible building work (the premises were empty and fitted out as a dwelling with furniture). The violation is the change of use, not necessarily the carrying out of works.

Error 3: Failing to take into account the statute of limitations when the change of use is long-standing. If the premises have been occupied as a dwelling for several years, the violation may have become time-barred.

Error 4: Calculating the fine based on the total value of the property rather than the cost of the change of use. The cost of a change of use without works is difficult to calculate, and councils sometimes use incorrect bases.

Anonymous real-life case

Verónica T. had converted a ground-floor commercial premises in Valladolid into her main residence five years earlier. The municipal planning instrument permitted residential use in that zone. The council opened punitive proceedings and restoration-of-legality proceedings. The violation became time-barred after four years under the regional legislation of that autonomous community. We submitted a statute-of-limitations argument. The proceedings were closed. We also submitted a change-of-use licence application to regularise the situation going forward.

Frequently asked questions

Does a change of use require a licence even if no building work is carried out? Yes. The change of use is in itself an act subject to a licence, regardless of whether or not it involves physical building work.

If the premises are in a building without an owners’ community, can I carry out the change of use freely? No. The need for a change-of-use licence does not depend on the existence of an owners’ community, but on the planning instrument.

What happens if the premises do not meet the habitability conditions? If the premises do not meet the minimum habitability conditions (clear height, ventilation, lighting), the change of use cannot be legalised without first carrying out works to remedy those deficiencies.

If the change of use took place more than 10 years ago, is there any protection? If the violation has become time-barred, the punitive proceedings cannot proceed. As for the restoration proceedings, this depends on the regional legislation and the type of land. [CHECK THE LEGAL POSITION]

Can an unlawful change of use prevent the sale of the property? It does not legally prevent a sale, but it can create problems with mortgage financing and registration at the Land Registry. In addition, the buyer may require regularisation as a condition of the purchase.

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Legal notice: This article is for informational purposes only and does not constitute personalised legal advice. Every case has its own particular circumstances. Consult a professional before taking any action.