Buying off-plan on the Costa del Sol

How off-plan works here

Buying off-plan means buying a property that is not yet built, or not yet finished, from a developer (a promotor). You commit on the basis of plans, a specification document, and a show unit if one exists. In return you usually pay less than the finished resale price, and you have some say over finishes while the building goes up.

The trade is straightforward. You accept time and construction risk, and you accept that your money is tied up for the build period. The legal framework in Spain is built to manage that risk, but only if the protections are actually in place on your specific purchase. The rest of this guide covers what those protections are and how to check them.

Off-plan is a purchase made on paper. The quality of that paper is the purchase.

The structure is consistent across the Costa del Sol. You reserve, you sign a private purchase contract, you pay against construction milestones, and you complete at the notary once the licence of first occupation is granted. Each step has its own document and its own things to verify.

The payment stages

Payments are spread across the build rather than paid in one sum. A reservation takes the unit off the market while contracts are drafted. The private purchase contract (contrato privado de compraventa) then formalises the deal, usually with a deposit that brings your committed total to around 20 to 30 per cent. Further instalments fall due as the building reaches agreed stages, and the balance is paid at completion.

These shares vary by developer and by scheme. Some front-load payments more heavily, which raises your exposure if the project stalls. The figures above are a common pattern, not a rule, so read the payment schedule in your own contract and check what each instalment is actually tied to.

All sums are subject to VAT (IVA), currently 10 per cent on new residential property, plus stamp duty (AJD). Budget for these from the start. They are paid on top of the headline price, and the VAT is generally charged on each payment as it falls due.

Protections and the licence

The single most important protection is the bank guarantee. Under Spanish law, every amount you pay before completion, including the reservation, must be secured by a bank guarantee (aval bancario) or an insurance policy, and held in a dedicated account separate from the developer's general funds. If the project is not delivered, you are entitled to your money back with interest.

• Ask for the individual guarantee certificate for your unit, in your name, not a general policy reference for the development.
• Confirm the issuing bank or insurer, the sum guaranteed, and that it rises as you pay further instalments.
• Check that payments are made into the named guaranteed account, and keep every receipt.
• Verify the build licence (licencia de obras) has been granted by the town hall, not merely applied for.

The build licence matters because a project without one is not legally permitted to proceed, and selling off-plan before it is granted carries real risk. A valid licence, a registered guarantee, and a clean title on the land are the three things to confirm before any money leaves your account. If a developer cannot produce them, that is the answer.

A guarantee you cannot see is a guarantee you do not have.

Completion timelines and slippage

The completion date in the brochure is a target. Construction on the Costa del Sol runs into the same delays seen elsewhere: licensing queues at the town hall, supply and labour shortages, and weather. Slippage of six to twelve months past the marketed date is common, and longer is not rare. Plan your own finances and any sale or mortgage around a later date than the one you are given.

What protects you here is the contract wording. Look for the agreed delivery date, the grace period the developer is allowed before penalties apply, the penalties themselves, and the point at which delay lets you withdraw and reclaim your money. These clauses decide what a delay actually costs you, so they deserve as much attention as the price.

Why an architect review matters

The brochure shows you a render and a price. It does not reliably show you the real ceiling heights, the wall build-up and insulation, the glazing specification, the true orientation of the living space, or where the developer has chosen to spend and where to save. An architect reading the plans and the memoria de calidades (the specification) reads all of this, before you commit.

1. 1Compare the floor plans against the written specification, and both against what the show unit implies.
2. 2Check orientation and sightlines for real sun and privacy, not the optimistic render angle.
3. 3Read the specification for the things that are expensive to change later: glazing, insulation, climate systems, and structure.
4. 4Identify which finishes are standard and which are upgrades quietly priced as extras.

This is the part of off-plan where buyer-side, architect-led advice earns its place. The developer's documents are written to sell. A technical reading tells you whether the spec matches the asking price, what the genuine cost of ownership will be, and which changes are worth negotiating while the building is still on paper and changes are cheap.

Promotor

The developer building and selling the scheme.

Contrato privado de compraventa

The private purchase contract that formalises the off-plan sale before completion at the notary.

Aval bancario

The bank guarantee securing your pre-completion payments, returnable with interest if the project is not delivered.

Licencia de obras

The municipal build licence that legally permits construction to proceed.

Memoria de calidades

The written specification listing the materials, systems, and finishes the developer commits to.

Licencia de primera ocupación

The licence of first occupation, confirming the building is finished and habitable, required before completion.