Water leak in a Spanish flat: neighbour, community or your insurer — who pays

01First 48 hours: stop it, document it, say it in writing

Whoever ends up paying, the first two days decide how easy it will be to make them pay. Water damage evolves: a wet ceiling patch today is peeling paint next week and a mould problem next month. Insurers and courts reconstruct the story from what you fixed on paper in those first hours — not from what you remember later.

Do these four things, in this order:

• Stop the source. Close the stopcock in your flat; if the water comes from above or from a shared pipe, alert the neighbour and the building’s property administrator (administrador de fincas) immediately so they can act on their side. Stopping the damage is also your duty as the insured — letting it spread can cost you part of the payout.
• Document everything, dated. Photos and video of the ceiling, walls, floors and damaged belongings, taken so the date is provable (cloud timestamps are fine). Repeat every few days while the stain evolves — a leak’s trajectory is evidence of its origin.
• Tell the administrator and the neighbour in writing. A phone call fixes nothing on paper. An email or a message to the administrador and the upstairs neighbour, describing what you see and when it started, creates the timeline every later claim will lean on.
• Keep every receipt. Emergency plumber, dehumidifier, temporary repairs — urgent mitigation costs are recoverable from whoever is liable, but only if you can show what you paid and why it could not wait.

02Who is liable: the three-way map

Spanish law answers “who pays” with two general rules. Article 1902 of the Civil Code (Código Civil) makes anyone who causes damage through fault or negligence liable to repair it — the workhorse of every leak claim, so expect to see art. 1902 quoted in demand letters. Article 1910 adds a stricter rule for dwellings: the head of the household answers for damage caused by things falling or thrown from it, and Spanish case law applies art. 1910 to water escaping from a flat.

In practice — and this is how insurers, administrators and courts actually sort leak files day to day — the question is not “whose fault” but “whose installation”. The working map has three branches:

• Your own installation. The pipe under your sink, your washing machine hose, your water heater: damage in your flat (and any damage you cause below) is your problem and, normally, your home policy’s problem.
• The neighbour’s flat. A private pipe or appliance in the flat above → the neighbour is liable (art. 1902; art. 1910 for the dwelling), and in practice the claim is handled between your insurer and the neighbour’s home insurer.
• A common element. The communal downpipe (bajante), the general risers, the roof, the façade: in practice these belong to the owners’ association (comunidad de propietarios), so the comunidad — and its master building policy — answers for what they leak.

03The insurance clocks: seven days and forty

Two deadlines in the Insurance Contract Act (Ley de Contrato de Seguro, LCS) shape every water-damage file, and both start earlier than most owners think.

First, notification. Article 16 LCS gives you seven days from the moment you learn of the incident to notify your insurer — your policy can extend that window, but never shorten it. Missing it does not automatically kill the claim: if the insurer learned of the incident some other way it cannot refuse outright, but it can deduct the damages your late notice caused. With a leak, where every dry week the insurer did not see matters, that deduction is real money — so notify first, investigate later.

Second, payment. Article 18 LCS obliges the insurer, within 40 days of receiving the claim declaration, to pay at least the minimum amount it may owe (importe mínimo) even while the final figure is still being argued. If your insurer has gone silent past that mark, you are entitled to chase the minimum payment — silence is not a lawful option for them.

One counter-intuitive rule of practice: notify your own insurer even when the leak is obviously the neighbour’s fault. Your policy is the fastest route to getting your ceiling repaired; in practice your insurer then recovers what it paid from the liable party’s insurer (subrogation), and the two companies argue between themselves instead of you arguing with the neighbour. Waiting for the neighbour’s insurer to volunteer is the classic way an absent foreign owner loses months.

04When the neighbour or the comunidad denies it

Denial is the default opening move: the neighbour “has no leak”, the comunidad says the communal downpipe (bajante) “is fine”, and everyone hopes you will repaint and forget. The answer is paper, not arguments in the stairwell.

Start with a formal written demand — in Spain that means a certified letter (burofax) with proof of content and delivery, addressed to the neighbour and/or the comunidad through its administrator. It states what happened, what the damage is, and what you demand (repair of the source, compensation for your damage). A burofax converts a shrug into a documented refusal — which is exactly what an insurer or a judge needs to see.

The comunidad cannot simply opt out: keeping common elements in repair is its core legal duty, so a leak traced to the bajante, roof or façade belongs on the community’s desk and its master policy. And if a neighbour refuses to let anyone in to locate the leak, the law hands you a lever: article 9.1.d of the Horizontal Property Act (Ley de Propiedad Horizontal, LPH) obliges every owner to allow entry to their flat for repairs to common elements. Quote art. 9.1.d in the burofax — access disputes tend to evaporate once the owner sees the obligation in writing.

When the disagreement is with an insurer about the cause or the amount, each side appoints its own insurance expert (perito), and if the two disagree the art. 38 LCS procedure brings in a third expert whose position carries decisive weight. We will not re-explain that machinery here — the step-by-step version lives in our guide to rejected insurance claims in Spain, which owns that ground.

05Special cases: absent owner, floods, tenants

Three situations come up constantly with foreign-owned flats, and each changes the playbook slightly.

• You were away and found the damage weeks later. The seven-day clock of art. 16 LCS runs from when you learn of the incident, not from when the pipe burst — so notify your insurer immediately on discovery and document, in writing, when and how you found out (arrival ticket, a neighbour’s message, the administrator’s email). Then over-document the damage itself: with an old leak the fight is about origin and timeline, and your dated photo series is what wins it.
• Flood or extraordinary weather. When the water comes from an extraordinary event — flooding, the Mediterranean “gota fría” — the payer is not your insurer but the state insurance pool, the Consorcio de Compensación de Seguros. You claim through the Consorcio even though your policy is with a private company; your insurer or broker can confirm whether your event falls under that regime and help route the claim.
• A tenant lives in the flat. The tenant is your eyes: instruct them (in writing, ideally in the lease) to report any leak to you and the administrator the same day. But the insurance notification is the policyholder’s job — the tenant tells you, you tell your insurer within the seven days. A tenant who “mentioned it at some point” is how owners discover the clock expired.

06Escalation path: refusal, lowball, court

Most leak files close at the insurer stage. When yours does not — the claim is refused, or the offer would barely cover the paint — escalate in order, cheapest step first.

A refusal or a lowball from an insurer is a documented position you can attack: check it against your policy wording, the expert report (peritaje) and the art. 18 LCS minimum-payment duty. The full sequence — internal complaint, the insurer’s customer-defence service, the supervisor, and the art. 38 expert route — is the same as for any rejected claim, and our insurance-claim-denied playbook walks through it step by step. Do not skip the written stages: each one either fixes the problem or builds the file for the next.

The last step is court. Water-damage claims against a neighbour, a comunidad or an insurer are ordinary civil claims, and for modest amounts the Spanish small-claims track keeps costs proportionate. By then, everything from the first 48 hours pays off: the dated photos, the burofax, the receipts and the expert reports are the case.

Before you answer an insurer’s refusal, accept a settlement figure or sign anything from a perito — it is worth a second pair of eyes. That is exactly what the document check below is for.