Renting a Flat in Spain: Contract Spanish, Decoded
Fianza, aval, gastos incluidos, prórroga: the Spanish rental contract vocabulary that decides how much you pay up front and how long you can stay.
By Parlazo
25 September 2026 · Updated 29 September 2026 · 4 min read

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 — 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 — 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 — the deposit. For a residential let this is legally one month’s 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 garantía adicional — 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 — 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 landlord’s responsibility rather than the tenant’s, 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 — bills included — and its opposite, gastos aparte.
- los suministros — utilities: la luz (electricity), el agua, el gas, internet
- la comunidad — the building’s service charge, covering the stairwell, lift, cleaning and often the pool. Usually the landlord’s cost, but check.
- el IBI — the annual council property tax. The owner’s bill by default, though some contracts try to pass it on.
- la basura — the refuse charge, small but often forgotten.
The question to ask is direct: ¿la luz y el agua están 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 — which usually requires your NIE.
How long you can stay
Spanish law is generous to tenants on duration, and the relevant word is la prórroga, the extension. A residential contract signed for one year typically renews automatically year by year up to a legal minimum — five years when the landlord is a private individual, seven when it is a company — at the tenant’s option rather than the landlord’s.
Other terms worth recognising:
- el contrato de arrendamiento — the tenancy agreement
- el arrendador / el arrendatario — landlord / tenant. Easy to confuse at speed; the tenant is the longer word.
- la duración — the term
- el preaviso — notice. Typically thirty days to leave, and the contract will state it.
- la actualización de la renta — the annual rent increase, and the index it is tied to
- la cláusula de desistimiento — the break clause letting you leave early, usually after six months
The state of the flat
Adverts compress a lot into a few adjectives.
- amueblado — furnished; sin amueblar — unfurnished, which in Spain can mean no light fittings and no kitchen appliances
- exterior / interior — facing the street or facing an internal courtyard. This is about light, and it matters.
- a reformar — needs renovating; reformado — renovated
- el certificado energético — the energy rating, legally required in the advert
- el inventario — the inventory, and the thing that protects your fianza. Photograph everything on the day you move in.
The paperwork they will ask you for
Expect to be asked for your NIE, your passport, a work contract or proof of income (la nómina for employees, tax returns if self-employed), and often a bank statement. Once you are in, you will want to register at the town hall — el empadronamiento — which usually requires the signed contract, and which you then need for almost everything else.
Both of those have their own vocabulary, covered in our guides to NIE, TIE and the cita previa and to empadronamiento.
Vocabulary
- la fianza — deposit
- el aval — bank guarantee
- gastos incluidos / aparte — bills included / extra
- los suministros — utilities
- la comunidad — building service charge
- el arrendador / el arrendatario — landlord / tenant
- la prórroga — extension of the term
- el preaviso — notice period
- el inventario — inventory
- la nómina — payslip
- amueblado — furnished
- a reformar — in need of renovation
Where to go next
Before a viewing, learn three questions by heart: ¿cuánto hay que pagar por adelantado? (how much is payable up front), ¿qué gastos van aparte? (which bills are extra), and ¿cuál es la duración del contrato? (how long is the contract). Asking them in Spanish, fluently, also quietly signals that you are not going to be easy to confuse.
If you have a viewing or a contract coming up, running the conversation through with a tutor first is time well spent — book a single Spanish lesson on Parlazo, pay for that lesson, no subscription.
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