Why are insurance costs exploding across hurricane-prone islands?

Property insurance premiums across hurricane-prone Caribbean territories have risen sharply over the last several years. In many cases, premiums have doubled or tripled. Coverage exclusions have widened. Deductibles have grown. Some homeowners and small businesses have been priced out of insurance entirely. The pressure is real, it is broad-based, and the reasons sit largely outside the region.

The first reason is the global reinsurance market. Local Caribbean insurers do not carry the full risk of a major hurricane on their own balance sheets. They pass most of that risk on to international reinsurers — large global firms whose business is to absorb catastrophic risk in exchange for premium income. When reinsurers face elevated losses globally — and the last several years have produced exactly that, with major losses from Atlantic hurricanes, Pacific wildfires, European floods, and other events — they re-price their coverage upward. That re-pricing flows directly into the rates local Caribbean insurers must charge their customers.

The second reason is climate science. Reinsurance pricing is built on catastrophe models that estimate the frequency and severity of major events. Those models have been updated to reflect the consensus that warming Atlantic surface temperatures produce more frequent and more intense storms, that rainfall extremes are increasing, and that storm surge risks are growing as sea levels rise. The model updates have produced higher expected-loss estimates for Caribbean exposures. Higher expected losses mean higher premiums.

The third reason is local market scale. The Caribbean insurance market is small in global terms. Premium volumes are limited. The number of local insurers is also limited, and competitive pressure to discount aggressively is correspondingly limited. When reinsurance costs rise, local insurers pass them through with relatively little absorption.

The fourth reason is concentration of exposure. A single major hurricane can damage a substantial share of a small territory’s built environment. For islands where most insured property sits in a narrow coastal corridor, the risk concentration is uncomfortably high. Reinsurers price that concentration explicitly. Premiums in territories with more dispersed risk are typically lower than premiums in territories where one event can produce catastrophic losses across the entire portfolio.

The fifth reason is construction quality. Building codes vary across the region, enforcement varies even more, and the existing stock of buildings includes a substantial share of structures that would not survive a major hurricane intact. Reinsurers know this. Higher loss expectations for vulnerable construction translate into higher premiums for the entire market, including for owners of well-built properties who are effectively cross-subsidising weaker construction.

Policy responses are emerging — the Caribbean Catastrophe Risk Insurance Facility provides parametric coverage for governments, regional discussions about a sovereign reinsurance pool continue, and individual countries have been pushing for inclusion in climate finance mechanisms that recognise insurance as a climate adaptation cost. None of these mechanisms have yet meaningfully lowered the premiums that ordinary Caribbean households and businesses pay. The pressure is structural and is likely to intensify before it eases.