The Algarve is one of the most seismically exposed regions in Portugal — the 1755 earthquake that devastated Lisbon originated offshore to the south-west. Yet many Algarve condominium buildings carry only the legally required fire insurance, which can leave owners dangerously exposed if the ground moves. This guide explains why earthquake cover matters here, what mandatory cover leaves out and how to close the gap.
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We find the gaps mandatory fire cover leaves out — in English.
What the law requires — and what it doesn't
Portuguese law requires condominiums (propriedade horizontal) to hold fire insurance on the building's common and private fractions. That is the legal minimum. It is not the same as full multi-risk cover, and it does not automatically include earthquake. Many condominium policies treat seismic cover as an optional extension — one that is frequently left off to keep the quota low.
Why earthquake cover matters in the Algarve
- Real seismic risk — the south-west Iberian margin is an active zone; the region's exposure is well documented.
- Shared structure, shared loss — in a condominium, structural damage hits every owner. Without seismic cover, the cost of rebuilding common structure can fall on owners directly.
- Underinsurance multiplies the problem — if the building is insured below its real rebuild value, payouts are reduced proportionally, even for covered events.
What a complete condominium policy should include
- Earthquake and seismic phenomena.
- Storm, flood and water damage.
- Public liability for the common areas.
- A building sum insured set to the real reconstruction cost, reviewed regularly.
How to close the gap
The starting point is a policy audit: confirm whether seismic cover is actually included, check the building's insured value against today's rebuild cost, and compare the market for a multi-risk condominium policy that adds the missing perils. We do this for Algarve buildings in English, with the administrator or owners' committee. For the wider picture on what shared policies miss, read what your condominium insurance doesn't cover, and see our condominium insurance in the Algarve page.
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A worked example
A buyer completing on a 1970s apartment in Portimão asked us to review the policy the bank had arranged with the mortgage. The building sum insured was €180,000, which was reasonable. Fenómenos sísmicos did not appear anywhere on the schedule. It had not been declined; it had simply never been added, because the bank’s product covered the minimum the loan required and nothing beyond it.
Adding it cost €68 a year, with a 2% excess on the building sum — €3,600 — applying only to a seismic claim. That is the entire trade-off, and the reason we raise it on every Algarve property we look at.
Why this is a live question here and not elsewhere
The Algarve sits on the Azores–Gibraltar fracture zone. The 1755 Lisbon earthquake and the tsunami that followed it did their worst damage on this coast, and the 1969 event was felt across the region. Portuguese seismic building codes have applied since 1958 and were substantially strengthened in 1983 and again with the Eurocodes; a building’s construction date is therefore the first thing an underwriter looks at.
| Construction period | Seismic design | Effect on cover |
|---|---|---|
| Before 1958 | None | Cover available but rated; some insurers decline |
| 1958–1983 | Early code | Usually available; higher excess |
| 1983–2010 | RSA code | Standard terms |
| After 2010 | Eurocode 8 | Standard terms, best rating |
How the excess works, and why it surprises people
Seismic cover almost always carries a percentage excess rather than a fixed one — commonly 1% to 5% of the building sum insured. On a €400,000 sum at 2%, you carry the first €8,000 of any earthquake claim. That is deliberate: the cover exists for the event that destroys the building, not for cracked plaster. Owners who expect a €250 excess and find €8,000 tend to conclude the cover is worthless, which is the wrong conclusion drawn from the right observation.
What the insurer asks at underwriting
- The year of construction, and the year of any structural alteration.
- The construction type — reinforced concrete frame, masonry, mixed, traditional stone.
- The number of floors and whether the ground floor is open (a soft storey materially worsens the risk).
- Whether the building has been surveyed or reinforced.
- For an apartment, whether the condominium policy carries seismic cover on the structure.
The three mistakes we see repeatedly
- Assuming it is included. It is optional in Portugal and is absent from a large share of policies, particularly those sold with a mortgage.
- Owning a fraction with seismic cover in a building without it. If the condominium policy has no seismic section, the structure is uninsured for it and your contents cover will not rebuild the block. Check both.
- Declining it on the excess. The excess is high because the cover is catastrophe cover. The question is not whether you would claim for €5,000 of damage, but whether you could fund a rebuild.
What to do
Look for fenómenos sísmicos on your condições particulares. If it is not there, ask us what it costs on your specific building — on most Algarve properties the answer is between €40 and €150 a year. See also what the condominium policy does not cover.
What it costs on an Algarve property
Seismic cover is one of the cheapest extensions in the Portuguese market. On a modern apartment with a building sum of €180,000 to €250,000, expect €40 to €90 a year. On a villa with a €500,000 rebuild value, €110 to €220. Pre-1958 masonry construction is rated higher and occasionally declined outright, in which case the specialist market is the route.
Two things to settle when you add it. Confirm the excess as a percentage and work out the euro figure on your own sum insured, so there is no surprise later. And confirm the building sum insured is a genuine reconstruction cost rather than a purchase price or a bank valuation — because a total loss is exactly the claim where the proportional rule does the most damage, and an earthquake is the peril most likely to produce one.
Part of our complete guide to home insurance in Portugal. For a free comparison across Zurich, Allianz, Hiscox and Liberty Mutual, request a quote in 24 hours.
As an ASF-registered insurance broker we audit your current cover and reply within 24 hours.
Adler & Rochefort is a commercial brand of Ownizo, Unipessoal Lda., registered with the ASF under no. 425591790/3. General guidance only; conditions and cover vary by insurer and building.
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