Renting a Flat in Spain: Contract Spanish, Decoded
Fianza, aval, gastos incluidos, prĂłrroga: the Spanish rental contract vocabulary that decides how much you pay up front and how long you can stay.
Par Parlazo
25 September 2026 · Mis à jour le 23 October 2026 · 4 min de lecture

A Spanish rental contract is four pages of formal legal Spanish handed to you at the moment you are least able to read it carefully â standing in an empty flat with an agent waiting and three other people viewing it that afternoon. The vocabulary is not hard, but it is specific, and almost none of it appears in a language course.
These are the terms that decide what you pay, what you get back, and how long you can stay. None of what follows is legal advice â rules change and vary by region, so check anything that matters with a professional. But knowing the words means you can ask the right question before you sign.
Money up front
The first shock is how much you need on day one. Three separate things are usually being asked for, and they are not the same.
- La fianza â the deposit. For a residential let this is legally one monthâs rent, and in most regions the landlord must lodge it with a regional housing body rather than keep it in their own account. You get it back at the end, minus damage.
- La garantĂa adicional â an extra guarantee on top of the fianza, often another month or two. Legally distinct from the deposit, and worth asking how and when it is returned.
- El aval bancario â a bank guarantee. The bank promises to cover unpaid rent, and to provide it you normally have to freeze a sum in your own account. Commonly asked of the self-employed, of foreigners without a Spanish payslip, and of students.
Also ask who pays the agency fee: los honorarios de la agencia. Since the 2023 housing law, agency fees on residential lets are the landlordâs responsibility rather than the tenantâs, but it is still worth confirming in writing what you are being charged and for what.
What the rent actually includes
The single most expensive misunderstanding in Spanish renting is the phrase gastos incluidos â bills included â and its opposite, gastos aparte.
- los suministros â utilities: la luz (electricity), el agua, el gas, internet
- la comunidad â the buildingâs service charge, covering the stairwell, lift, cleaning and often the pool. Usually the landlordâs cost, but check.
- el IBI â the annual council property tax. The ownerâs bill by default, though some contracts try to pass it on.
- la basura â the refuse charge, small but often forgotten.
The question to ask is direct: Âżla luz y el agua estĂĄn incluidas o van aparte? And if the utilities are to go in your name, you will need el cambio de titularidad, the transfer of the account â which usually requires your NIE.
How long you can stay
Spanish law is generous to tenants on duration, and the relevant word is la prĂłrroga, the extension. A residential contract signed for one year typically renews automatically year by year up to a legal minimum â five years when the landlord is a private individual, seven when it is a company â at the tenantâs option rather than the landlordâs.
Other terms worth recognising:
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