What a surplus lines insurer is
A surplus lines insurer, also called an excess and surplus (E and S) carrier, is an insurance company that is not licensed, or "admitted," in Florida but is allowed to write coverage here through a licensed surplus lines agent. Surplus lines carriers exist to cover risks the standard admitted market will not take: high-value coastal homes, properties with older roofs, heavy loss history, or unusual exposures. As Florida's admitted market tightened, more homeowners were pushed into surplus lines policies.
The key tradeoff: no FIGA backstop
The single most important difference for a policyholder is insolvency protection. When an admitted Florida insurer fails, the Florida Insurance Guaranty Association (FIGA) steps in and pays covered claims up to its statutory caps. Surplus lines carriers are not members of FIGA, so if a surplus lines insurer becomes insolvent, there is generally no state guaranty fund standing behind your claim. That makes the financial strength of a surplus lines carrier something to check before you buy, not after a loss.
What else is different
Surplus lines rates and policy forms are not reviewed and approved by Florida regulators the way admitted policies are, so coverage terms, exclusions, and deductibles can vary widely and can be less favorable. A surplus lines premium also carries a separate surplus lines tax. Read the policy form closely, because sublimits, roof schedules, and water-damage caps in a surplus lines policy are often written more in the carrier's favor than what you would see on an admitted form.