Surplus Lines Insurance: The Hidden Risks of Non-Admitted Carriers

As the California insurance market has tightened, hundreds of thousands of homeowners have been pushed into a part of the market most of them have never heard of: surplus lines insurance, also called excess and surplus (E&S) insurance. These are policies issued by non-admitted carriers— insurance companies that are not licensed by the California Department of Insurance (CDI) but are permitted to operate in the state under a separate regulatory framework.

Surplus lines insurance has always existed as a niche market for unusual or hard-to-place risks. What is new is the scale: surplus lines transaction volume in California increased by approximately 119% in the first half of 2025 compared to the same period two years earlier, and more than 300,000 California homeowners now have their primary property coverage through a surplus lines carrier. For many of these homeowners, it is the only option — but the differences between admitted and non-admitted coverage are significant, and not all of them are obvious.

What Is Surplus Lines Insurance?

The term “surplus lines” refers to insurance coverage that is not available through the admitted (licensed) insurance market. Under California Insurance Code Section 1763, a surplus lines broker can place coverage with a non-admitted carrier only after making a “diligent search” of the admitted market and determining that the coverage is not available from any admitted insurer willing to write the risk.

Non-admitted carriers are not licensed by the CDI, but they must be listed on the California Surplus Line Association’s (CSLA) List of Approved Surplus Line Insurers. To be listed, a carrier must meet minimum financial requirements and be domiciled in a jurisdiction with adequate regulatory oversight. However, the level of regulatory scrutiny is fundamentally different from what admitted carriers face.

Key Differences Between Admitted and Non-Admitted Carriers

Understanding the differences between admitted and surplus lines carriers is essential for any policyholder evaluating their options:

No CIGA Guaranty Fund Protection

This is the single most significant difference. The California Insurance Guarantee Association (CIGA) is a statutory safety net that pays claims when an admitted insurance company becomes insolvent. CIGA coverage is funded by assessments on all admitted insurers operating in California, and it provides a critical backstop for policyholders whose carrier fails.

Surplus lines carriers are excluded from CIGA. If a non-admitted carrier becomes insolvent, the policyholder’s only recourse is the carrier’s liquidation estate, which typically pays claims at a fraction of their value — and only after years of proceedings. In a catastrophic scenario where a surplus lines carrier is overwhelmed by wildfire losses, policyholders could face the devastating combination of a destroyed home and an insurer that cannot pay.

No Rate Filing Requirements

Admitted carriers in California must file their rates with the CDI and receive approval before those rates take effect. This prior-approval process — established by Proposition 103 — is designed to prevent excessive, inadequate, or unfairly discriminatory rates.

Surplus lines carriers are exempt from this requirement. They can set whatever rates they choose, adjust them at any time, and are not subject to CDI rate review. In practice, this means surplus lines premiums are almost always significantly higher than what an admitted carrier would charge for the same risk — and there is no regulatory check on whether the premium is excessive.

Fewer Regulatory Protections

Admitted carriers are subject to the full range of California insurance regulations, including the Fair Claims Settlement Practices Regulations (10 CCR 2695), the Unfair Insurance Practices Act (Insurance Code 790.03), and CDI oversight of claims handling practices. Policyholders with admitted carriers can file complaints with the CDI and have the Department investigate and take enforcement action.

Surplus lines carriers operate under a reduced regulatory framework. While they are not entirely unregulated — the CSLA provides some oversight, and basic fraud prohibitions still apply — the CDI has significantly less authority over surplus lines claims handling practices. A policyholder with a claims dispute against a surplus lines carrier has fewer administrative remedies and may need to resort to litigation more quickly.

Surplus Lines Tax

Surplus lines policies are subject to a 3% surplus lines tax, plus a stamping fee charged by the CSLA. This tax is passed through to the policyholder and adds to the already higher premium. Admitted carrier premiums are not subject to this additional tax.

Broker-Only Placement

Surplus lines policies can only be placed through a licensed surplus lines broker. A standard insurance agent cannot place surplus lines coverage unless the agent also holds a surplus lines broker license. The broker has a statutory obligation to conduct the diligent search of the admitted market before placing coverage with a non-admitted carrier and to ensure the carrier meets the CSLA’s listing requirements.

Why More Than 300,000 California Homeowners Are on Surplus Lines

The explosion in surplus lines homeowner policies is a direct consequence of the admitted market contraction. When State Farm, Allstate, Farmers, and other major carriers stopped writing new homeowner policies in California or non-renewed existing policies in wildfire-prone areas, homeowners had two options: the California FAIR Plan or the surplus lines market.

Many homeowners have chosen surplus lines because, despite its limitations, a surplus lines policy can offer broader coverage than the FAIR Plan’s basic fire-only policy. A surplus lines homeowner policy typically includes theft, water damage, liability, and other coverages that the FAIR Plan does not provide. For homeowners who need comprehensive coverage and cannot find it from an admitted carrier, surplus lines may be the most practical option — even at a significantly higher price.

Coverage Gaps to Watch For

Not all surplus lines policies are created equal. Because non-admitted carriers are not bound by the same standardized policy forms that many admitted carriers use, surplus lines policies can vary significantly in their terms, conditions, and exclusions. Policyholders should carefully review the following:

• Valuation method. Does the policy provide replacement cost value (RCV) or only actual cash value (ACV)? Some surplus lines policies default to ACV, which deducts depreciation and can result in significantly lower claim payments.
• Code upgrade coverage. Is building code upgrade (ordinance or law) coverage included, and at what limit? Some surplus lines policies exclude it entirely or provide inadequate limits.
• Additional living expenses (ALE). What is the ALE limit, and is there a time limit? Some surplus lines policies cap ALE at 12 months, which may be insufficient for a total loss rebuild.
• Water damage sublimits. Many surplus lines policies impose sublimits on water damage that are significantly lower than the overall policy limit. A $500,000 policy with a $25,000 water damage sublimit provides far less protection than most homeowners realize.
• Wildfire-specific exclusions. Some surplus lines policies include exclusions or limitations specific to wildfire that would not be found in a standard admitted carrier policy.
• Deductible structure. Surplus lines policies may use percentage-based deductibles (e.g., 5% of dwelling coverage) rather than flat dollar deductibles. On a $500,000 policy, a 5% deductible means $25,000 out of pocket before coverage begins.

For homeowners on the FAIR Plan who are considering a surplus lines Difference in Conditions (DIC) policy to fill coverage gaps, the same vigilance applies. DIC policies from surplus lines carriers can vary widely in what they cover and exclude.

How to Evaluate a Surplus Lines Carrier

Because the regulatory safety net is weaker for surplus lines carriers, the policyholder’s own due diligence becomes more important. When considering a surplus lines policy:

• Check the AM Best rating. AM Best is the primary credit rating agency for insurance companies. Look for a carrier rated A- (Excellent) or higher. A rating below A- does not necessarily mean the carrier is unsound, but it warrants additional scrutiny.
• Verify CSLA listing.Confirm the carrier is on the California Surplus Line Association’s current list of approved surplus line insurers. The list is available on the CSLA’s website.
• Review the carrier’s California exposure. A carrier with heavy concentration in California wildfire zones faces more risk than one with a diversified portfolio. Heavily concentrated carriers are more vulnerable to the kind of catastrophic event that triggers insolvency.
• Understand the corporate structure. Some surplus lines carriers are subsidiaries of larger, well-capitalized groups. Others are smaller, standalone entities. The financial backing of the parent organization matters.
• Ask about reinsurance.A well-managed surplus lines carrier should carry substantial reinsurance to protect against catastrophic losses. The broker should be able to provide general information about the carrier’s reinsurance program.

When Surplus Lines May Be the Only Option

For some California homeowners, surplus lines insurance is not a choice — it is the only option. This is particularly true for:

• Homes in high and very high fire hazard severity zones where all admitted carriers have withdrawn
• Properties with characteristics that admitted carriers will not insure (older roofs, wood shake, limited access, excessive vegetation)
• High-value homes that exceed the FAIR Plan’s coverage limits
• Homeowners who need comprehensive coverage (including liability and water damage) and cannot accept the FAIR Plan’s fire-only limitations

In these situations, a well-evaluated surplus lines policy from a financially strong carrier may genuinely be the best available option. The key is to go in with open eyes about the differences and limitations rather than assuming the policy provides the same protections as admitted carrier coverage.

For more on the broader market conditions driving homeowners into surplus lines, see the overview of the California insurance crisis.

Key Takeaways

• Surplus lines (E&S) insurance is issued by non-admitted carriers that are not licensed by the CDI and operate under a reduced regulatory framework.
• The most critical difference: surplus lines policyholders have no CIGA guaranty fund protection if the carrier becomes insolvent.
• Surplus lines carriers are exempt from CDI rate approval, meaning premiums are unregulated and typically significantly higher than admitted market rates.
• Over 300,000 California homeowners are now on surplus lines policies, driven by admitted carrier withdrawals from wildfire-prone areas.
• Policy terms vary widely. Policyholders must carefully review valuation methods, sublimits, deductible structures, and exclusions — surplus lines policies are not standardized.
• Always check the carrier’s AM Best rating (A- or higher preferred), CSLA listing, and financial strength before purchasing a surplus lines policy.
• A surplus lines policy from a strong carrier may be the best available option, but policyholders should understand the reduced protections and plan accordingly.