Off-plan vs key-ready: what changes besides the waiting

Buying a new-build in Spain means choosing between a home that exists and one that does not yet. The trade is straightforward in principle — price and choice against certainty and time — but the legal position differs more than most buyers expect.

What you actually see

With a key-ready home you inspect the finished product: light at different times of day, noise, the real size of the terrace, the quality of the finishes, and what the neighbours built. Off-plan you are buying drawings, a specification and a developer's track record. Everything you cannot verify has to be covered by the contract instead.

The protections that only apply off-plan

Spanish law treats money paid before completion as needing protection. Under the Building Regulation Act, sums a buyer pays on account before the building is finished must be secured by a bank guarantee or an insurance policy, and held in a separate account used only for the construction.Ley de Ordenación de la Edificación If the developer fails to deliver, that is what you claim against.

A contract that takes stage payments without naming the guarantor and the dedicated account is not giving you this protection, whatever else it promises. This is the single most important clause to check before signing anything off-plan.

Warranties apply to both

Once a building is completed, the same statutory warranty periods run whether you bought early or late: ten years for structural defects, three for defects affecting habitability, and one year for the finishes.Ley de Ordenación de la Edificación Buying key-ready shortens the period you still have left on the ten-year cover, since it starts at completion rather than at your purchase.

Timing and money

Off-plan spreads payment across construction milestones, which suits buyers who are selling something else or releasing funds over time. Key-ready generally means paying in full at the deed, and a shorter run from decision to keys. Off-plan also carries delivery risk: check what remedy you have if the estimated completion date passes, and who bears the cost if the first occupation licence is delayed.

Which suits which buyer

Off-plan suits buyers with time, a tolerance for uncertainty, and a preference for choosing plot, orientation and finishes. Key-ready suits buyers who need a date they can rely on, who want to see exactly what they are buying, or who are financing in a way that requires certainty. Neither is safer in the abstract: off-plan carries more risk and more statutory protection at the same time.

This guide describes how the two routes differ. It is not legal advice — appoint an independent lawyer before any money moves.