Surplus lines homeowners’ policies in California surpassed 300,000 in 2025 - a level without precedent in the state's history, according to data from the Surplus Line Association of California - and the properties driving that growth are no longer the wildfire-exposed homes that started the trend.
Analysis published by SLACAL data scientist Mikhail Gorshunov reveals that the portfolio-wide wildfire exposure of California's E&S homeowners’ book fell from a standardized hazard metric of 0.44 in 2020 to just 0.20 in 2025. Urban homes in standard metropolitan areas now represent roughly 90% of all E&S placements in the state. Cities like Bakersfield and San Jose - not associated with wildfire risk - are among the fastest-growing E&S markets. Jonathan Clark, North America public sector managing director at Guy Carpenter, one of the world's largest reinsurance brokers, identifies the cause directly. "When admitted market bureaucracy is mind-numbing or insurance departments won't approve anything, risk capital finds alternative product channels," he said.
The excess and surplus lines market exists to handle risk that admitted carriers cannot profitably write at approved rates. E&S carriers operate without the rate and form filing requirements that bind admitted insurers, giving them the pricing flexibility to take on risks that standard markets cannot serve. That flexibility has long made E&S essential - a pressure valve for risk that the admitted market cannot absorb.
Clark describes how that pressure valve works in practice. "When admitted market bureaucracy is mind-numbing or insurance departments won't approve anything, risk capital finds alternative product channels," he said. "Admitted market coverage is better for consumers and should constitute the majority long-term. But current regulatory conditions are pushing it the wrong way."
The E&S market has responded with speed. Nationally, the E&S sector's share of total US property and casualty premiums reached approximately 9% in 2025 - nearly double its 2017 level, according to AM Best data - with surplus lines premiums in reporting states rising 13.2% in the first half of the year. The market has delivered underwriting profitability and attracted sustained capital inflows for three years running.
Karalee Morell, executive vice president and general counsel of the Reinsurance Association of America, flags the consumer protection dimension. "Programs work best as markets of last resort rather than first resort," she said. Admitted policies carry state guaranty fund protections that E&S policies do not. Coverage terms are standardized in the admitted market in ways that make comparison meaningful. Rate adequacy is subject to regulatory oversight that provides a check on carrier behavior that the non-admitted market does not replicate.
Clark makes the same point from a market structure angle. "Risk capital shrinking leads to higher costs and reduced affordability," he said, describing what happens when rate suppression drives admitted carriers out. "That is what happens when risk is not appropriately priced." California's Proposition 103, which requires prior approval of rate changes, has historically made it difficult to incorporate forward-looking catastrophe model outputs into pricing - the constraint that is sending standard metropolitan risk into E&S channels.
"When admitted market bureaucracy is mind-numbing or insurance departments won't approve anything, risk capital finds alternative product channels, which can undermine consumer interests."
Clark points to recent California reforms as a potential turning point. Changes that make it easier to incorporate frontier catastrophe model outputs in rate filings, and to include reinsurance costs in the ratemaking formula, create conditions in which admitted carriers can price more accurately. "Insurance departments approving methodology updates in a timeframe that keeps pace with the science" is how Clark frames the requirement for the admitted market to function as it should.
Whether those reforms are sufficient to reverse the admitted-to-E&S drift has not yet been demonstrated. The SLACAL April 2026 data shows no reversal. The average assessed value of newly written surplus lines homes fell from $900,000 in 2024 to $800,000 in 2025, and average premiums declined 14.5% - indicating that the profile of E&S placements is moving further into territory that the admitted market was historically built to serve.
Clark draws on the National Flood Insurance Program's evolution as a model for what good outcomes look like. "Dramatic improvements in flood risk analytics have enabled better alignment between private insurers and the public program, creating more consumer choice rather than less," he said. The same logic applies to wildfire: better risk intelligence reduces the uncertainty premium that carriers require, and creates conditions for admitted market participation where it did not exist before. The E&S market excels when risk is genuinely complex. The goal is to make more risk legible, not less.
