Strata InsuranceJuly 9, 2026 · 7 min read

How Strata Earthquake Insurance Works in BC

How strata earthquake insurance works in BC: why the deductible is a percentage of building value, and what a large earthquake deductible could mean for owners.

Why earthquake coverage is on every BC strata's radar

If you own or help run a strata in Metro Vancouver or the Fraser Valley, you're sitting in one of the most seismically active regions in the country. The Cascadia subduction zone runs off our coast, and geologists have long been clear that a significant quake is a question of when, not if. You don't need to lose sleep over it, but you do need your building's insurance to account for it.

That's where earthquake coverage comes in, and it's one of the most misunderstood lines on a strata policy. Owners often assume that because the strata "has insurance," a quake is fully covered with a manageable deductible, the same way a burst pipe might be. Earthquake coverage doesn't work that way, and the difference can be enormous. This guide walks through how strata earthquake insurance in BC actually functions, why the deductible is calculated so differently, and what a large earthquake deductible could mean for you as an owner.

This article is general information, not legal or insurance advice. Every policy is different — confirm the specifics with your broker and, where it matters, a strata lawyer.

Is earthquake insurance required for BC stratas?

Under BC's Strata Property Act, a strata corporation must insure the common property, common assets, and the buildings shown on the strata plan for full replacement value against a set of named perils. Earthquake is commonly one of those perils, and the large majority of buildings in the Lower Mainland carry earthquake coverage as part of their annual policy.

That said, the exact requirements and any room a strata has to adjust coverage are the kind of details that shift over time and vary by policy. Rather than rely on a general rule, ask your broker to confirm in writing whether earthquake is included on your current policy, and have your council review it each renewal. This fits into the bigger picture of what strata insurance actually covers in BC — earthquake is just one peril among several, but it behaves very differently from the rest.

The part that catches owners off guard: the percentage deductible

Here's the crux of the whole topic. Most deductibles you're used to are flat dollar amounts. A water-damage deductible, for example, might be a fixed figure the strata pays before the policy responds. Earthquake deductibles don't work like that.

An earthquake deductible is almost always expressed as a percentage of the building's insured (replacement) value — not a percentage of the claim, and not a flat dollar figure. Because it's tied to what it would cost to rebuild the entire building, the resulting number is far larger than any ordinary deductible your strata carries. That's why earthquake sits in a category of its own. For a broader primer, our guide to strata insurance deductibles in BC covers the general mechanics.

The actual percentage varies from policy to policy and moves with the insurance market, so it's not something to assume. What matters is that you know two numbers for your own building: the insured replacement value, and the earthquake deductible percentage that applies to it. Multiply them together and you have a rough sense of the strata's exposure before the policy pays a cent.

What a large earthquake deductible could actually mean

Let's make this concrete with an illustration — and to be clear, the figures below are hypothetical, chosen only to show the mechanism, not a prediction of your policy.

Say a small building is insured to rebuild for $30 million, and the earthquake deductible is set at 10% of insured value. That's a $3 million deductible the strata corporation would have to fund before the earthquake coverage responds. In a serious quake that damages the building, the corporation is on the hook for that amount, and there's no insurer covering it.

Where does $3 million come from in a building that might have only a few dozen units? It comes from the owners. A deductible of that size would almost certainly be funded through a special levy, allocated among the strata lots — typically by unit entitlement — and each owner's share could be substantial. Split across only a few dozen owners, the per-unit cost can be eye-watering. This is the scenario the phrase "earthquake deductible" should bring to mind: not a routine line item, but a potentially building-defining financial event.

It's worth being honest that a well-funded contingency reserve fund won't fully absorb a deductible of this scale — reserve funds are sized for planned component replacements, not catastrophe deductibles. That's not a reason to panic, just a reason to plan around the exposure deliberately rather than discover it after the fact.

How your small strata can prepare

You can't lower the seismic risk of the region, but there's plenty a council and its owners can do to reduce the surprise:

Know your two numbers. Ask your broker for the current insured replacement value and the earthquake deductible percentage, and make sure both appear in your AGM insurance summary so every owner can see them.
Review coverage at every renewal. Markets move, and so do deductible percentages and premiums. Treat the renewal as a genuine review, not a rubber stamp.
Talk to owners about personal coverage. The strata's policy responds to the building; it generally won't cover an owner's betterments, belongings, or their share of a deductible. That's where condo owner's insurance comes in — and specifically loss-assessment coverage, designed to help with an owner's portion of a strata deductible.
Build the exposure into long-term planning. Your reserve strategy, insurance review, and depreciation planning should all treat the earthquake deductible as a known, quantifiable risk rather than an abstract one.

None of this removes the risk, but it turns a vague worry into concrete numbers your council can actually manage — often the difference between a community that's caught off guard and one that isn't.

Frequently asked questions

Is earthquake insurance mandatory for a strata in BC? BC's Strata Property Act requires stratas to insure buildings for full replacement value against named perils, and earthquake is commonly included — most Lower Mainland stratas carry it. Because requirements and policy terms change over time, confirm with your broker whether earthquake is on your current policy, and consult a strata lawyer if the answer is unclear.

Why is the earthquake deductible so much higher than other deductibles? Earthquake deductibles are calculated as a percentage of the building's full insured replacement value, not as a flat dollar amount. Because they're tied to the entire rebuild cost, the resulting figure is far larger than a typical water or fire deductible, and it can reach into the millions even for a modest building.

Who pays the earthquake deductible if there's a claim? The strata corporation is responsible for the deductible before the policy responds, and it would typically raise the money from owners through a special levy, allocated by unit entitlement. Each owner's share depends on the deductible size and the number of units, which is why the per-unit cost can be significant in a smaller building.

Can owners protect themselves from a big deductible? Owners can carry condo owner's insurance that includes loss-assessment coverage, designed to help pay an owner's share of a strata deductible. Coverage amounts and terms vary, so speak with your own insurance advisor about how much loss-assessment protection makes sense for your unit.

Does our contingency reserve fund cover an earthquake deductible? Not usually. Reserve funds are built to pay for planned component replacements over time, not a sudden catastrophe deductible in the millions. A serious earthquake deductible would most likely be funded through a special levy on top of whatever reserves exist.