Buildings Insurance in Spain: How to Calculate Your Home’s True Rebuild Cost

Ask ten new clients what their villa is insured for and most will quote the price they paid for it. It feels logical — and it is wrong in both directions at once. Insure at the market price and you pay premium every year on land and location that can never be destroyed; insure at a figure someone guessed a decade ago and a single clause in Spanish law — the regla proporcional — quietly cuts every future claim, even small ones. After 25 years arranging home insurance in Spain we calculate rebuild values every working day, and this guide sets out the whole method: what the law says, how to work the figure out per square metre, what to add for the pool, the walls and the terraces, which borderline items belong to buildings rather than contents — and what happened in Lorca in 2011, when an earthquake tested thousands of sums insured on the same afternoon.

Rebuild cost vs market value: two numbers that have almost nothing in common

What a Spanish property sells for is mostly a statement about where it is: the plot, the sea view, the walking distance to the beach, the demand from other buyers. What it would cost to rebuild is a statement about construction: materials, labour, professional fees and licences. After a fire or an earthquake the land is still there, the view is still there and the location is still there — none of it needs buying again. Only the construction has to be paid for twice.

That is why the correct buildings sum insured (continente) is the rebuild cost, and on the coast it is usually far below the market price — often only 50–70% of what you paid, because so much of a Costa Blanca price is land and location. The numbers behind that are stark: Sociedad de Tasación data from late 2025 put average national construction cost at €1,360/m² against an average new-build selling price of €3,298/m² — construction is barely 40% of price nationally, and less still in prime locations. This is not just broker opinion, either: the insurance regulator itself, the DGSFP, states that land must never form part of the sum insured, because it is uninsurable by nature — it is not destroyed by any insured peril.

Here is the part worth saying plainly, because it is the opposite of what you might expect from someone who sells insurance: over-insuring is good business for the insurer and for the agent. The premium is calculated on the capital, so a sum insured padded up to market value means more premium every single year — and Spanish law still will not pay out more than the actual loss (Art. 31, Ley 50/1980; more below). We set capitals at rebuild cost because it is the only honest number, not because it is the profitable one.

What Spanish law says: infraseguro, sobreseguro and the regla proporcional

Three articles of the Insurance Contract Act (Ley 50/1980, de Contrato de Seguro) decide what happens when the sum insured and the real value of your property disagree:

• Article 26 — insurance is not a lottery ticket. Insurance cannot be a source of enrichment: the indemnity can never exceed the actual damage suffered, and the sum insured is only the ceiling of what the insurer will ever pay.
• Article 30 — under-insurance (infraseguro) and the proportional rule. If, at the moment of a claim, the sum insured is lower than the real value of what is insured, the insurer indemnifies the damage in the same proportion that the sum insured bears to that real value. This is the regla proporcional.
• Article 31 — over-insurance (sobreseguro). If the sum insured notably exceeds the real value, either party can demand it be reduced — with the excess premium returned — but at claim time you are still only ever paid the actual damage. Everything above rebuild cost is premium spent on nothing.

The proportional rule is where the money is lost, so it deserves a worked example:

Notice what the example shows: the house did not burn to the ground, and the pool and the boundary walls were not touched — yet leaving them out of the capital still cost this owner €15,000 on an ordinary kitchen fire. The proportional rule is applied to every claim, however partial. That is the single most important sentence in this guide, and it is why the sum insured must be enough to rebuild everything on the plot, damaged or not: the comparison the loss adjuster makes is not “was the payout enough for this repair?” but “was the capital enough for the whole property?”.

The square-metre method, step by step

Professional valuers, architects and insurers all estimate rebuild cost the same way: built area × a rebuild rate per square metre, plus everything the rate does not include. Generali’s own guidance to policyholders describes exactly this method — multiply the constructed square metres by the average rebuild cost of similar properties in your area — and it is the method we use when we set up a policy.

Step 1 — find your real built area

Do not guess. Your escritura (title deed), the nota simple from the Land Registry or the free Catastro website all state the superficie construida — the built area including walls. The Catastro entry also itemises garages, storerooms and porches separately, which is exactly the breakdown you need. If you have extended or enclosed a terrace since, add it: the policy insures what exists, not what the paperwork remembers.

Step 2 — choose a realistic €/m² rate

Construction costs in Spain rose steeply after 2020 — the sector’s residential cost index climbed roughly 45% between the end of 2020 and 2025, and here in the Valencian Community the official building module used by architects (the IVE’s Módulo Básico de Edificación) went from €605/m² in 2019 to €950/m² in 2026 — up 57%. That surge is precisely why sums insured set years ago are so often short today. As current references: OCU’s February 2026 rebuild benchmarks run from about €900–€1,260/m² for flats to €1,770–€2,310/m² for single-family homes in the main cities, while Mapfre’s consumer guidance quotes €800–€1,500/m² depending on finishes. In our day-to-day work on the Costa Blanca, these are the working bands we see:

Two honest caveats. First, a “full” rebuild budget is more than bricks. OCU itself warns that its per-m² figures are base construction costs, before: demolition and debris removal (≈€50–€100/m² plus tipping fees), architect’s fees (≈8–12% of the build) and the aparejador’s (≈3–5%), the municipal works tax (ICIO, up to 4%) plus the licence fee, and 10% IVA on the works. Together they add roughly 20–30% to a bare construction estimate — use a rate that allows for them. Second, rates move: a figure that was generous in 2019 is mediocre in 2026. That is what annual review and index-linking are for (below).

Step 3 — add everything the house rate does not cover

The €/m² rate prices the dwelling. It does not price the swimming pool, the 90 metres of boundary wall, the gates, the terraces or the summer kitchen — and on a villa those are real money, as the next section shows.

Step 4 — round up

When the arithmetic lands on €312,000, we insure €325,000 or €330,000 — never €300,000. The reasons are in their own section, because this habit is the cheapest claims protection that exists.

Pools, walls, terraces: what to add for the plot

On Spanish policies the continente is defined generously: it includes the pool, the boundary and retaining walls, fences, paved areas, fixed sports installations and outbuildings — but only up to the capital you declared. Mapfre, to take one insurer’s public wording, covers the pool “provided it is declared on the policy” and requires a pool built later to be notified and incorporated. An undeclared pool is either not covered at all or — worse and more common — it silently drags the whole policy into under-insurance, because the adjuster counts it when measuring the real value of the property against your capital.

Current Spanish trade prices for rebuilding the usual external elements:

Add that column up on an ordinary villa and it comes to €50,000–€70,000 of genuine continente that never appears in a sum insured based on the house alone. Leaving it out does not just leave those items uncovered — it under-insures the whole policy through the proportional rule, exactly as in the kitchen-fire example above.

Buildings or contents? The borderline items people get wrong

Spanish policies split the home into continente (buildings) and contenido (contents), and a handful of items sit close enough to the line that owners regularly put them on the wrong side — which distorts both capitals:

• The fitted kitchen is buildings. Units, worktops and anything fixed to the structure belong to the continente — while the fridge, oven and dishwasher standing in it are contents. A €25,000 kitchen counted as “contents” leaves the buildings figure short and inflates the contents one.
• Fixed air conditioning is buildings. Ducted systems, wall-mounted splits and their external units are fixed installations, like the plumbing and wiring. Only a plug-in portable unit is contents.
• Fitted wardrobes, bathroom suites, solar panels and awnings follow the same logic: fixed to the fabric of the building = continente. If in doubt, apply the classic test — turn the house upside down and shake it: what falls out is contents, what stays put is buildings.
• Garden furniture is contents — outdoors. Policies apply a specific, and usually modest, sub-limit for contents kept in the open air (and often a separate one for items in unlocked outbuildings). The €4,000 teak dining set and the €800 sun loungers are not simply covered because the contents capital is big enough — the open-air limit caps them, and theft from an unfenced or unlocked garden is frequently excluded altogether. If your outdoor furniture is serious money, tell us and we will check the schedule limit against it.

Gardens, glass and falling objects: small print worth reading before a claim

Three areas of a Spanish home policy generate a disproportionate share of surprises at claim time — not because insurers hide anything, but because the limits live in the schedule and nobody reads them until the day they matter:

• Plants, trees and the garden itself. Some policies include garden cover, many do not, and where it exists it is narrower than owners assume: indemnity typically applies only when a plant or tree is dead or destroyed by a covered peril — a tree that is damaged but survives is not replaced — and it is subject to per-tree and per-event limits, usually for a short list of perils such as fire. Replanting a mature olive or a row of established palms is real money; if the garden matters to you, it needs checking, not assuming.
• Glass is a separate guarantee with its own conditions. Breakage cover for windows, glazed doors and often ceramic hobs is standard, but it applies to accidental breakage of fixed glass and can carry per-pane or per-event limits — and curved, laminated or oversized panes and glass curtains may need declaring at their real replacement value. A villa with floor-to-ceiling glazing should not be insured on the assumption that “glass is glass”.
• Falling objects and impact. Impact by vehicles, aircraft and falling trees, masts or aerials is a normal named guarantee — but what it pays for is damage to insured property. If the tree flattens the pergola you never declared, or the neighbour’s pine lands on garden furniture above the open-air sub-limit, the guarantee is working exactly as written and the gap was in the capitals. (Storm damage, by contrast, has its own rules — and a catastrophic windstorm over 120 km/h moves the claim to the Consorcio.)

A worked example: a 180 m² villa near Javea

Pulling the method together for a typical detached villa on an 800 m² plot — standard quality, pool, walled boundary, the usual outdoor life:

Two things stand out. The externals come to €60,000 — nearly 20% on top of the house — which is why a sum insured copied from “the house times a rate” is under-insured on day one. And the final figure may well be barely half of what this villa would fetch on the market: that difference is the land and the location, which no fire can touch and no premium should be paid on.

Why we always round up

Whenever the calculation produces a number, we insure above it, never below. This is not caution for its own sake — it is arithmetic:

• The penalties are asymmetric. Insure €20,000 over and you have spent a few euros a year on headroom — a claim still pays actual cost, no more (Art. 26). Insure €20,000 under and the proportional rule takes a slice of every claim. Cheap option, expensive option.
• Construction inflation eats margins. Build costs rose sharply after 2020; a capital that was exactly right three years ago is short today. Rounding up buys time between reviews, and the policy’s automatic index-linking then works from a healthy base rather than rescuing a deficient one.
• Rebuild estimates are estimates. Nobody prices demolition, debris removal, fees, licences and two years of building-cost drift to the euro in advance. The round-up absorbs the estimate’s own error, in the only direction that is safe.

Lorca 2011: the earthquake that audited a town’s insurance in one afternoon

On 11 May 2011 two earthquakes struck Lorca, in Murcia — a magnitude 4.5 foreshock at 17:05, then the magnitude 5.1 mainshock at 18:47. On paper, 5.1 is moderate. In the ground under Lorca it was anything but: the rupture was extraordinarily shallow — a hypocentre of roughly 1–3 km — and barely outside the town, and the directivity of the rupture focused its energy straight into the urban area, producing a peak ground acceleration of 0.37g, at the time the highest ever recorded in Spain.

Nine people died — essentially all of them struck in the street by falling cornices, parapets and façade masonry shaken off buildings — and more than 300 were injured. Around 80% of the town’s dwellings suffered damage; on the European damage survey 689 buildings recorded serious (grade 4) damage and 329 grade 5 — collapse or fit only for demolition. By the time the post-quake demolition deadline expired that September, 1,164 dwellings had been pulled down. Tens of thousands of residents slept outdoors or in cars that first night.

Then came the insurance audit that nobody had volunteered for. Earthquake is an extraordinary risk in Spain, so the claims went to the Consorcio de Compensación de Seguros, which ultimately paid about €485 million across more than 32,000 claims — to this day the largest earthquake payout in its history, and paid fast: the first payments went out within a fortnight, and four months on it had settled around 85% of registered claims. Among them, the Consorcio indemnified 135 demolished buildings containing 1,240 dwellings, paying €135 million for demolished properties alone — nearly 28% of the entire payout from under 6% of the claim files.

But here is the clause that decided family fortunes: the Consorcio’s own rule for demolished buildings was to pay repair or rebuild cost “up to the limit of the policy’s sum insured or the rebuild value” — whichever ran out first. To check every file, it built a standard valuation from architects’ per-m² construction modules plus demolition, fees and taxes — explicitly comparing each policy’s capital against real rebuild cost to detect infraseguro. Buildings whose communities had kept their sums insured honest were rebuilt on insurance money. Where the declared capital was short, the payout stopped at the capital — and the difference had to come from the owners’ own pockets or from public aid that was slower and far smaller: roughly €78 million of housing aid against €485 million of insurance money, with the final tranche of state reconstruction aid only approved in October 2024, thirteen years after the earthquake. Three years on, the residents’ own association reported that only around 450 of the 1,152 families who had lost their homes had managed to rebuild — and said openly that those still stranded were, above all, the ones who had been under-insured or uninsured and were depending on grants. Commercial premises fared worst of all: the Consorcio found that most of Lorca’s shops carried no insurance at all, many policies having been cancelled to save money in the post-2008 crisis.

The lesson is not that Lorca was unlucky — it is that the Consorcio pays on the same sums insured as your ordinary policy. That is the law, twice over: its statute covers “the same property and the same sums insured” as your policy (Art. 8.2, RDL 7/2004), and the extraordinary-risks regulation applies the same proportional rule to under-insurance as Article 30 does (Art. 5.3, RD 300/2004). The state catastrophe fund does not ask what your home is worth; it asks what your policy says. A capital that is 30% short in a kitchen fire is exactly as short in an earthquake — multiplied across every home in a damaged town, and payable at precisely the moment when every builder in the province has two years of work in front of them. Valencia’s October 2024 DANA floods have since re-run the same audit at nine times the scale — almost €4,500 million paid by the Consorcio to mid-2026, over €1,100 million of it to homes and communities — and the insurance industry’s own published lesson was the same sentence again: sums insured must track the real value of what they protect.

Communities of owners: the same rule at block scale

Everything above applies with more zeros to a comunidad de propietarios. The community’s policy should insure the full rebuild cost of the block — structure, common installations, façades, lifts, garages — and when it is short, the proportional rule scales down the community’s claims exactly as it does a villa owner’s. The difference is what happens next: the shortfall lands on the owners as a derrama, an extraordinary levy voted at exactly the moment nobody can afford it.

Is community insurance compulsory? Nationally, no — the Ley de Propiedad Horizontal only notes that the community’s reserve fund may be used to buy it — but two regions do make building insurance obligatory: the Comunidad Valenciana (fire and third-party cover for residential buildings, with the community responsible for insuring the common elements — Art. 30, Ley 8/2004) and Madrid (Art. 24, Ley 2/1999). On the Costa Blanca, in other words, the block must be insured; the open question is only whether the capital is honest. A worked example used by Spanish community specialists makes the stakes plain: a block that costs €1,000,000 to rebuild but is insured for €800,000 is 20% under-insured — a €100,000 fire claim pays €80,000, and the missing €20,000 is apportioned among the owners by their participation quotas.

Two practical rules for anyone on a community board: have the rebuild value professionally reviewed periodically rather than renewing last decade’s figure with an index bump, and check what the community policy actually covers before assuming it protects your flat — it stops at the communal elements. Your own policy covers your interior, your improvements and your contents; our community insurance page and the comunidad owner’s guide cover both sides in detail, including how community claims work.

Keeping the figure right over time

A correct sum insured is not a one-off achievement; it is a number under slow attack from inflation and home improvement. Three habits keep it honest:

• Let index-linking do its job — from the right base. Spanish policies apply automatic revalorización of capitals at renewal. It tracks general construction-cost drift well, but it can only preserve a correct figure; it cannot repair a wrong one.
• Declare changes when they happen. A new pool, an enclosed naya, a garage, a €30,000 kitchen, solar panels, a glass curtain on the terrace — each one raises the real value of the continente, and each is a phone call to us at the time, not a discovery for the adjuster later.
• Re-run the whole calculation every few years. Rates per m² move faster than indices in construction booms — the professional advice from Spain’s valuation societies is a proper re-check at least every three to five years, and always after major works. Every renewal we can sanity-check the capital against current rates — it takes minutes and it is free.

And if you are comparing policies rather than capitals, our home insurance comparison shows how the main Spanish insurers handle rebuild values and the proportional rule — and our guide to making a home insurance claim in Spain shows the process the capital ultimately has to survive.

Frequently asked questions

Sources & references: Ley 50/1980 de Contrato de Seguro, Arts. 26–31 (BOE consolidated text); Real Decreto Legislativo 7/2004 (Consorcio legal statute, Art. 8.2) and Real Decreto 300/2004 (extraordinary-risks regulation, Art. 5); the DGSFP’s published criterion on damage insurance linked to mortgages and the exclusion of land value from sums insured; Consorcio de Compensación de Seguros — Consorseguros Digital analyses of the 11 May 2011 Lorca earthquakes, its claims and payment record and its study of demolished and indemnified buildings (consorsegurosdigital.com), plus its published DANA 2024 payment data; Ley 8/2004 de la Vivienda de la Comunidad Valenciana Art. 30 and Ley 2/1999 de la Comunidad de Madrid Art. 24 on compulsory building insurance; OCU February 2026 rebuild-cost benchmarks and Sociedad de Tasación construction-cost data; the IVE’s Módulo Básico de Edificación series for the Comunitat Valenciana; Generali and Mapfre published policyholder guidance on continente capital and declared pools; Spanish trade-price guides (Cronoshare, Habitissimo and contractor price books, 2025–26 editions) for the external-element cost table; seismic data from the IGN and the British Geological Survey and the UPM directivity study of the Lorca mainshock. All rebuild rates and element prices are indicative August 2026 guide figures — your property should be calculated individually, which we do as part of any quote. This guide is general information, not financial advice.