In Spain, renovation works are classified as either minor (obra menor) or major (obra mayor). Minor works — painting, tiling, kitchen and bathroom renovation without structural changes — require a simplified notification or minor licence that can often be issued in days. Major works — structural changes, wall removal, new openings, roof modifications — require a full building licence that typically takes 2–4 months in Marbella and other Costa del Sol municipalities.
Do you need a permit to renovate in Spain?
Yes — virtually all renovation work in Spain requires some form of municipal licence or notification, even if only a basic one. The specific requirement depends on the nature and extent of the works. The permit system is managed by the local ayuntamiento (council), and the rules can vary slightly between municipalities. Marbella, Málaga, Fuengirola, Benalmádena and Torremolinos each have their own licensing departments, though the national framework is the same.
For non-resident property owners, the permit process is managed by your contractor, who should include this service as part of the project management. If a contractor tells you no permit is needed for structural works, that is a red flag.
Obra menor: minor works licence
An obra menor covers cosmetic and non-structural renovation works: internal painting and plastering, replacing tiles in bathrooms and kitchens (without structural changes), changing flooring, replacing fixtures and fittings, and updating the kitchen or bathroom layout within the existing plumbing positions. In most Costa del Sol municipalities, a minor works licence requires a simple application to the ayuntamiento with a basic description of the works. Processing times range from a few days to 2–3 weeks depending on the municipality.
The cost of an obra menor licence is typically €150–€600 depending on the estimated cost of works. Your contractor handles the application.
Obra mayor: major works licence
An obra mayor is required for any works that affect the structure of the building: removing or modifying load-bearing walls, creating new openings in exterior walls or between floors, modifying the roof structure, adding extensions, or changing the use of a space. This type of licence requires a full technical project prepared by a registered architect, the project to be approved by the municipal planning department, and a construction director to supervise the works.
In Marbella municipality, obra mayor licences currently take 2–4 months to process. In Málaga city, processing times can be longer. This timeline must be factored into your renovation schedule — works cannot legally begin before the licence is issued. For a full renovation involving structural changes, see our full renovation Costa del Sol guide.
The declaración responsable — a faster option
In some cases, a declaración responsable (responsible declaration) can replace the full obra mayor process. This is a declaration by a registered architect that the proposed works comply with urban planning regulations, submitted to the ayuntamiento without requiring prior approval. The works can begin once the declaration is submitted (not after approval), which significantly accelerates the project.
Not all municipalities accept this route for all work types, and the works must genuinely comply with all planning regulations. Your architect determines whether this option is available for your specific project.
What requires an architect?
In Spain, any structural renovation — obra mayor — requires the involvement of a registered architect (arquitecto) who prepares the technical project and acts as the project's official director of works (director de obra). This is a legal requirement, not optional. The architect's fee for a renovation project typically ranges from 5–8% of the construction cost.
For non-structural obra menor works, an architect is not legally required. However, some contractors choose to involve an architect or technical architect (aparejador) as project supervisor for quality control — this is separate from the permit requirement.
Timescales and costs in the Costa del Sol
| Permit type | Timescale | Indicative cost |
|---|---|---|
| Obra menor (minor works) | Days to 3 weeks | €150 – €600 |
| Declaración responsable | 1–4 weeks | €800 – €2,500 |
| Obra mayor (Marbella) | 2–4 months | €1,500 – €5,000+ |
| Architect fee (obra mayor) | — | 5–8% of build cost |
What happens if you renovate without a permit?
Renovating without the correct permit in Spain exposes you to several risks: the ayuntamiento can issue a stop-work order and fine; in serious cases, the works may be ordered to be demolished at your expense; and illegal works create complications when you come to sell, as the buyer's solicitor will identify the discrepancy between the registered property and what has been built.
The most common scenario is an owner who carries out structural works without an obra mayor licence on the advice of a contractor who said it wasn't necessary. This creates a legal and financial problem that can cost significantly more to resolve than the permit would have cost in the first place. For guidance on working with a reliable contractor on the Costa del Sol, see our renovations for expats guide.