Buying and renovating a home near Alicante, Costa Blanca, Spain

Buying and Renovating a Home near Alicante: Licences, Planning Rules and the Legal Side of the Works

28 September 2026

An old finca in the hills, a townhouse in the historic centre or a 1980s villa with a sea view: the Alicante area is full of properties with potential. For many international buyers, the plan is simple on paper—buy below market value, renovate, and end up with a home designed around their own way of living. In practice, a renovation project in Spain starts long before the first wall comes down. The legal and planning status of the property decides what you can build, how long it will take and how much it will really cost.

This guide covers the key points to review before and after buying property in Alicante with the intention of renovating it.

1. Check the planning status before you sign anything

The single most important question is what type of land the house sits on. Properties on urban land (suelo urbano) can usually be renovated and, within the municipal plan’s limits, extended. Properties on rustic or non-developable land (suelo no urbanizable) are much more restricted: extensions, new pools or changes of use may be forbidden, and existing structures built without a licence can create serious problems.

Before paying a deposit, it is worth confirming that:

The description in the Land Registry (Registro de la Propiedad) matches the Cadastre (Catastro) and the reality on the ground—number of rooms, built area, annexes, pool.
There are no open planning infringement proceedings at the town hall.
Any extensions or outbuildings were built with a licence, or are old enough and legally regularisable.
The property has, or can obtain, its occupancy licence (licencia de ocupación), which is needed for utility contracts and future sales.

This legal due diligence is part of any well-managed purchase, and it is especially relevant when buying property on the Costa Blanca as a foreign buyer who may not be familiar with how Spanish registries and municipal rules interact.

2. Minor works or major works?

Spanish town halls distinguish between two broad types of intervention:

Minor works (obra menor): new kitchens and bathrooms, flooring, painting, replacing windows without changing openings. In the Valencian Community many of these are processed through a declaración responsable, a sworn statement that allows work to start quickly, often with a short technical description.
Major works (obra mayor): anything affecting the structure, the façade, the volume or the layout in a significant way, as well as extensions and changes of use. These require a project signed by an architect and a building licence before work starts.

Getting this classification wrong is one of the most common mistakes. Starting structural works under a minor-works permit can lead to fines, stop orders and, in the worst cases, demolition orders. The town hall will also charge a construction tax (ICIO) and licence fees calculated on the budget of the works, so they should be included in your numbers from day one.

3. The architect and the timeline

For major works, the architect prepares the basic and execution project, handles the licence application and supervises the works together with a technical architect. Licence timelines vary a lot between municipalities—from a few weeks to several months—so it is sensible to plan the purchase and the renovation budget with that waiting period in mind, especially if you are financing with a mortgage or paying rent elsewhere.

4. The legal side of the works

Once the licence is in place, the focus moves to contracts. A written agreement with the builder should include a detailed budget, a payment schedule linked to completed stages, deadlines, penalties for delays, guarantees and who is responsible for obtaining certificates at the end. Paying large amounts upfront or working on a verbal agreement is a frequent source of disputes.

When the works are finished, the new situation has to be reflected officially. Extensions or substantial changes must be declared through a declaración de obra nueva before a notary, registered at the Land Registry and updated in the Cadastre. Skipping this step can cause problems later with insurance, inheritance or a future sale.

5. The same logic applies across the province

These rules are not limited to the city of Alicante. Buyers looking at coastal towns such as Denia, Jávea, Altea or Torrevieja face very similar questions: what type of land the property is on, whether previous owners built without permits, and which licence each part of the project needs. Each town hall applies its own municipal plan, so what is allowed in one municipality may not be in the next.

A renovation project near Alicante can be an excellent investment, but it depends on a solid legal starting point. Checking the planning status before signing, choosing the right type of licence and formalising the works correctly once they are finished will save time, money and stress. Working with an independent lawyer and an architect from the start is the most reliable way to turn an old property into the home you had in mind.

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