Climate change is driving up the cost of house and home insurance (and it’s not subtle)

Once upon a time, “home insurance” was the boring direct debit you paid so you could sleep at night while the wind tried to rearrange your roof tiles into modern art. Now it’s becoming a live commentary on the climate: more floods, more storms, more subsidence, bigger claims, and—inevitably—bigger premiums.

In the UK, insurers are already paying out eye-watering sums for weather damage. The Association of British Insurers (ABI) reports £6.1bn in property insurance payouts in 2025, with storm and flood claims both jumping, and the average payouts rising sharply (storms and floods aren’t just more frequent; they’re more expensive when they hit). That money comes from somewhere, and a chunk of it lands back on our doormats as higher premiums and excesses.

Why climate change pushes premiums up

1) More claims, more often
Warmer air holds more moisture, which helps supercharge heavy rainfall. Add saturated ground and overwhelmed drains, and “a bit of water in the garden” becomes “why is the lounge trying to become a paddling pool?”. More claims means insurers adjust prices to match reality.

2) Repairs cost more than they used to
Even if the weather stayed the same (it isn’t), building materials and labour have got pricier. When a storm knocks off ten tiles, it’s no longer a ten-tile bill.

3) Reinsurance costs are rising
Insurers buy insurance too—called reinsurance—to protect themselves in bad years. As global disaster losses rise, reinsurance can get more expensive, and those costs feed through into local premiums. Global catastrophe-loss summaries from major reinsurers keep highlighting how large insured losses have become.

4) Some places become “hard to insure”
When the risk gets too high (or too uncertain), insurers may restrict cover, raise excesses, or decline altogether. That’s how you end up with homes that are technically lovely… but financially awkward—because mortgages and sales often depend on insurability. Recent reporting has highlighted growing “uninsurable” pockets and the knock-on effects for homeowners.

The UK safety net: Flood Re (helpful… but not forever)

The UK has Flood Re, a scheme designed to keep flood insurance available and more affordable for higher-risk households. But it’s explicitly time-limited and currently set to end in 2039—based on the idea that the country will reduce risk and improve resilience by then. That’s the plan, anyway.

So the long-term direction of travel is pretty clear: as climate risks rise, insurance pricing becomes more “risk-reflective” unless we invest heavily in flood prevention, drainage, nature-based solutions, and resilient building.

What can you do as a homeowner (besides sigh heavily at the renewal email)?

A few practical moves can genuinely help—either by reducing risk, making you more attractive to insurers, or limiting damage:

• Flood resistance / resilience: door barriers, airbrick covers, raising sockets, tiled floors downstairs, sump pumps (where appropriate).

• Maintenance that prevents “avoidable” claims: gutters cleared, roofs checked, loose tiles fixed—insurers are increasingly picky about wear-and-tear vs storm damage.

• Reduce escape-of-water risk: modern hoses on washing machines/dishwashers, leak detectors, stopcock you can actually reach.

• Subsidence awareness: manage trees near buildings, keep drainage in good order, and watch for cracks early in drought-prone areas.

And zooming out: the biggest “insurance discount” society can buy is adaptation—better flood defences, upgraded drainage, smarter planning rules, and restoring wetlands to hold water back before it hits your street.

The blunt takeaway

Home insurance is becoming a climate bill. The more we let extreme weather damage homes, the more we collectively pay—through premiums, taxes (for defences and recovery), and falling property liquidity in high-risk areas. ABI’s 2025 payouts are a giant neon sign flashing: this is no longer a niche issue.