https://www.insurerbrain.com/w/index.php?action=history&feed=atom&title=Definition%3AProperty_catastrophe_reinsuranceDefinition:Property catastrophe reinsurance - Revision history2026-04-30T11:03:55ZRevision history for this page on the wikiMediaWiki 1.43.8https://www.insurerbrain.com/w/index.php?title=Definition:Property_catastrophe_reinsurance&diff=8100&oldid=prevPlumBot: Bot: Creating new article from JSON2026-03-10T13:42:45Z<p>Bot: Creating new article from JSON</p>
<p><b>New page</b></p><div>🌪️ '''Property catastrophe reinsurance''' is a form of [[Definition:Reinsurance | reinsurance]] that protects [[Definition:Insurance carrier | primary insurers]] against the accumulation of [[Definition:Property insurance | property]] losses arising from a single [[Definition:Catastrophe | catastrophic event]] — such as a hurricane, earthquake, wildfire, or severe convective storm — that triggers a large number of [[Definition:Claim | claims]] simultaneously. Unlike [[Definition:Per-risk reinsurance | per-risk reinsurance]], which responds to individual large losses, property catastrophe covers are designed to absorb the aggregate impact of an event across an insurer's entire book. This line of business sits at the heart of the global [[Definition:Reinsurance market | reinsurance market]] and plays a defining role in determining how much [[Definition:Catastrophe exposure | catastrophe exposure]] a [[Definition:Cedent | cedent]] can safely retain.<br />
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🔧 Structured most commonly as [[Definition:Catastrophe excess-of-loss reinsurance | excess-of-loss]] treaties, property catastrophe reinsurance attaches above a specified retention — the amount the ceding insurer absorbs before the reinsurer's obligation begins — and pays up to a defined limit. Treaties are typically placed in layers, with lower layers carrying higher [[Definition:Rate on line (ROL) | rates on line]] because they attach closer to expected loss levels. Pricing is heavily influenced by [[Definition:Catastrophe modeling | catastrophe models]] from firms like [[Definition:AIR Worldwide | AIR]], [[Definition:RMS | RMS]], and [[Definition:CoreLogic | CoreLogic]], which simulate thousands of possible event scenarios to estimate probable losses. Placement occurs through [[Definition:Reinsurance broker | reinsurance brokers]] and may involve dozens of participating [[Definition:Reinsurer | reinsurers]], [[Definition:Lloyd's syndicate | Lloyd's syndicates]], and [[Definition:Insurance-linked securities (ILS) | ILS]] funds sharing capacity across the program's layers.<br />
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📈 The availability and cost of property catastrophe reinsurance directly shapes the primary insurance market's ability to write [[Definition:Catastrophe-exposed | catastrophe-exposed]] risks in regions like Florida, California, and the Gulf Coast. When reinsurance capacity tightens — as it did following major loss years in 2017 and 2022 — primary [[Definition:Premium | premiums]] rise, [[Definition:Underwriting guidelines | underwriting guidelines]] constrict, and some carriers withdraw from affected geographies altogether. Conversely, abundant reinsurance capital, including flows from [[Definition:Catastrophe bond | catastrophe bonds]] and [[Definition:Collateralized reinsurance | collateralized reinsurance]], can temper rate increases and expand market access. For any insurer with meaningful property concentration, the strategic design and placement of a catastrophe reinsurance program is one of the most consequential financial decisions it makes each year.<br />
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'''Related concepts'''<br />
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* [[Definition:Catastrophe excess-of-loss reinsurance]]<br />
* [[Definition:Catastrophe modeling]]<br />
* [[Definition:Catastrophe bond]]<br />
* [[Definition:Rate on line (ROL)]]<br />
* [[Definition:Retrocession]]<br />
* [[Definition:Insurance-linked securities (ILS)]]<br />
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