California Surplus Lines (E&S) for Commercial Property: 2026 Guide

Surplus lines insurance, also called non-admitted or E&S (Excess and Surplus) insurance, is coverage written by specialty carriers that are not licensed by the California Department of Insurance and are not rate-regulated, which lets them write risks admitted carriers refuse. By 2025 the surplus lines share of California commercial property reached roughly 20%, up from about 6% a decade earlier, because admitted carriers retreated from wildfire-exposed property. The tradeoff: E&S carriers carry a 3% state premium tax plus a 0.18% stamping fee, and they are not backed by the California Insurance Guarantee Association (CIGA), so there is no state guaranty-fund safety net if the insurer becomes insolvent.

This guide explains what surplus lines is, how the placement works mechanically in California (the diligent search, the role of the surplus line broker and the Surplus Line Association of California), the costs and the CIGA tradeoff, how to vet a non-admitted carrier, and how to find a licensed surplus lines broker. It sits underneath our pillar on California commercial property insurance.

Key Takeaways

• Surplus lines = non-admitted = E&S. These are specialty carriers not licensed or rate-regulated by the CDI. They can underwrite to actual risk and write property admitted carriers decline, per the California Department of Insurance.
• About 20% of California commercial property now goes E&S, up from roughly 6% in 2014, as admitted carriers pulled back from wildfire-exposed segments.
• A "diligent search" is required first. Under California Insurance Code §1763, it is prima facie evidence of a diligent search when three admitted insurers that actually write the line have declined the risk, documented on the SL-2 diligent search form.
• The unique costs are a 3% state premium tax and a 0.18% stamping fee paid to the Surplus Line Association of California, in effect since January 1, 2023.
• No CIGA backstop. Admitted policies are protected by the California Insurance Guarantee Association if the carrier fails; surplus lines policies are not. This is the single most important consumer tradeoff.
• Vet the carrier on AM Best and the CDI's LASLI list. LASLI insurers must hold at least $45 million in capital and surplus and pass CDI review, per the CDI LASLI program.

What Is Surplus Lines Insurance?

Surplus lines insurance is coverage placed with a non-admitted insurer, meaning an insurer that is not licensed by the California Department of Insurance to transact in the state, used when admitted (licensed) carriers will not write the risk. "Surplus lines," "non-admitted," and "E&S" (Excess and Surplus) all describe the same market. These carriers are still regulated, just differently: they answer to their domicile regulator and to California's surplus lines law, but they do not file rates or forms with the CDI for approval. That regulatory flexibility is the whole point. It lets a surplus carrier underwrite to the actual risk and write a wildfire-zone building, a heavy-cooking restaurant, or a large habitational schedule that admitted appetite has abandoned.

A common misconception is that "non-admitted" means "unregulated" or "unsafe." It does not. As the industry puts it, non-admitted does not mean non-regulated. The real, concrete difference for a policyholder is consumer protection, specifically the CIGA guaranty-fund question covered below, not the legitimacy of the carrier.

Why About 20% of California Commercial Property Now Goes E&S

The surplus lines share of California commercial property reached roughly 20% by 2025, up from approximately 6% in 2014, because admitted carriers retreated from wildfire-exposed property faster than they could be replaced. When an admitted carrier files rates with the CDI and those rates cannot rise fast enough to match wildfire and large-loss reality, the carrier stops writing the risk instead. The capacity it vacates does not disappear; it moves to the E&S market, which can price the risk freely.

The shift accelerated after the 2023 to 2025 carrier exits. State Farm announced the non-renewal of roughly 42,000 California commercial apartment policies in March 2024, and carriers including Liberty Mutual, Chubb, Farmers, Nationwide, and The Hartford limited writings in wildfire-exposed commercial segments. For wildfire-zone commercial property today, the surplus lines market is frequently the only market, alongside the California FAIR Plan as the fire-only fallback. If your admitted carrier just non-renewed, our admitted carrier non-renewal commercial California playbook walks through the 60-day replacement clock.

How a Surplus Lines Placement Works in California

A California surplus lines placement follows a fixed legal sequence: a licensed surplus line broker documents that the admitted market declined the risk, places the coverage with an eligible non-admitted carrier, files with the Surplus Line Association of California, and charges the policyholder the premium plus the surplus lines tax and stamping fee. You cannot simply choose an E&S policy because you prefer it; the law requires that the admitted market be tried first.

Step 1: The diligent search (declinations)

Before placing a risk in the surplus lines market, the broker must perform a diligent search of the admitted market. Under California Insurance Code §1763, it is prima facie evidence that a diligent search was made when three admitted insurers that actually write that type of insurance in California have declined the risk (or when fewer than three admitted insurers write the line at all). Those declinations are documented on the SL-2 Diligent Search Report form filed with the Surplus Line Association. In practice this means a wildfire-zone owner who has already been non-renewed and declined by admitted carriers has, in effect, completed most of the diligent search just by being turned away.

Step 2: The surplus line broker

Surplus lines can only be placed by a person who holds a California surplus line broker license, which is separate from an ordinary property-casualty agent license, per the CDI surplus line broker requirements. The surplus line broker, not the retail agent, signs the regulatory affidavits and takes responsibility for the diligent search and the filings. Many retail brokers access the E&S market through wholesale brokers (such as RT Specialty, Burns & Wilcox, or Amwins) who hold the surplus license and the carrier relationships.

Step 3: The Surplus Line Association of California (SLA) and filings

Every surplus lines transaction must be filed with the Surplus Line Association of California (SLA), the CDI commissioner's designee for receiving and reviewing surplus lines filings. The SLA "stamps" each transaction, reviews it for compliance (correct eligibility, completed diligent search, proper tax), and collects the stamping fee. The broker files the report, typically within 60 days of placing the coverage.

The Costs Unique to Surplus Lines (Tax + Stamping Fee)

California surplus lines policies carry two charges on top of the carrier's risk premium that admitted policies do not: a 3% state premium tax and a 0.18% SLA stamping fee. Both are paid by the broker and passed through to the policyholder, and both are calculated on the premium plus broker fees, net of returns.

• State surplus lines premium tax: 3.0% of gross premium, payable to the state. The 2025 annual premium tax return was due March 2, 2026, per the SLA broker taxes and fees resource.
• SLA stamping fee: 0.18% of premium, payable to the Surplus Line Association of California. This rate has been in effect since January 1, 2023 (reduced from the prior 0.25%), per the SLA. Confirm the current rate at placement, since the SLA Stamping Committee can adjust it.
• Possible broker fee. Some surplus brokers add a separate, disclosed broker fee, which must be disclosed under California law. This is in addition to, not part of, the tax and stamping fee.

Worked example on a $40,000 surplus lines property premium: roughly $1,200 in state premium tax (3%) plus about $72 in stamping fee (0.18%), for roughly $1,272 in surplus lines charges on top of the $40,000 risk premium, before any broker fee. The taxes are modest relative to the premium itself; the larger cost difference versus admitted is in the underlying risk rate, since E&S carriers price wildfire and large-loss exposure without rate-filing constraints.

The Key Tradeoff: No CIGA Backstop

The most important consumer tradeoff of going non-admitted is that surplus lines policies are not protected by the California Insurance Guarantee Association (CIGA). CIGA is the state guaranty fund that pays covered claims (up to statutory limits) when an admitted carrier becomes insolvent, funded by assessments on admitted insurers, per CIGA. Because surplus lines carriers are not licensed in California, they do not pay into CIGA, and their policyholders cannot draw on it. If a non-admitted insurer fails, the policyholder is a creditor in the insurer's home-state liquidation, with no California safety net.

This is the real reason the diligent-search requirement exists: the state wants admitted, CIGA-backed coverage tried first. It is also why vetting the carrier's financial strength matters more in the E&S market than the admitted market. The flip side is access and flexibility. For a wildfire-zone commercial building that no admitted carrier will write, an A-rated surplus carrier with no CIGA backstop is categorically better than no coverage, a force-placed lender policy, or a fire-only FAIR Plan policy with major gaps.

How to Vet a Non-Admitted Carrier

Vet a surplus lines carrier on two things: its financial strength rating and its California eligibility status. Because there is no CIGA backstop, the carrier's ability to pay claims is the policyholder's only protection, so financial strength carries more weight here than in the admitted market.

• AM Best rating. Confirm the carrier's financial strength rating on AM Best's Rating Center. For a high-value placement, an A- (Excellent) or better is a reasonable floor. Most reputable surplus carriers (Lloyd's syndicates, Tokio Marine HCC, and similar) carry strong Best ratings.
• CDI LASLI list (preferred). The List of Approved Surplus Line Insurers (LASLI) is the CDI's optional list of pre-reviewed non-admitted insurers. LASLI carriers must hold at least $45 million in capital and surplus, demonstrate three years of seasoning (or an exception), and pass CDI financial review. Placing with a LASLI carrier is the cleanest eligibility path.
• Eligible (non-LASLI) carriers. Carriers not on the LASLI can still be eligible if they meet the standards in California Insurance Code §1765.1 and the federal Nonadmitted and Reinsurance Reform Act (NRRA). The CDI does not pre-approve these, so the broker carries more of the eligibility burden. Ask the broker to confirm eligibility in writing.
• Read the policy form. Surplus forms are not standardized. Scrutinize protective-safeguards endorsements (coverage voids if a sprinkler system is out of service), vacancy clauses (often triggering at 30 to 60 days), ordinance-or-law sub-limits, and per-location wildfire or windstorm deductibles that can run 2% to 5% of insured value.

How to Find a Licensed Surplus Lines Broker in California

To place commercial property in the California E&S market, you need a broker who either holds a California surplus line broker license or works directly with a wholesale broker who does. An ordinary retail agent cannot sign the surplus lines affidavits. The practical steps:

1. 1.
   Confirm the surplus license. Verify the broker or their wholesale partner holds an active California surplus line broker license; you can check license status through the CDI license lookup.
2. 2.
   Choose an independent broker, not a captive agent. Captive agents represent one carrier and cannot access the E&S market or the FAIR Plan. An independent brokerage can quote admitted, surplus lines, and FAIR Plan in parallel.
3. 3.
   Confirm wholesale relationships. Ask which surplus wholesalers and carriers the broker can access. Breadth of E&S markets is what finds the best wildfire-zone terms.
4. 4.
   Ask how they document the diligent search. A broker who handles the SL-2 form and the SLA filing cleanly is one who does this routinely.
5. 5.
   Verify they also place the wrap. For wildfire-zone property, the E&S option is often weighed against a FAIR Plan policy plus a Difference in Conditions (DIC) wrap. A broker who can structure both lets you compare the true total cost.

Independent brokers can run admitted, E&S, and FAIR Plan submissions simultaneously, which is the only way to know whether surplus lines is actually your best option or just your most available one. For the FAIR Plan comparison, see our California FAIR Plan vs admitted carrier breakdown and the alternatives to the California FAIR Plan guide.

When Surplus Lines Is (and Isn't) the Right Choice

Surplus lines is the right choice when admitted carriers have declined the risk and the alternatives (a fire-only FAIR Plan policy, force-placed lender coverage, or no coverage) are worse. For most California wildfire-zone commercial property in 2026, that describes the situation exactly. E&S delivers broader coverage than the FAIR Plan in a single policy, which can be simpler than the FAIR Plan + DIC stack.

Surplus lines is not the right choice when an admitted carrier will still write the risk at a competitive rate, because admitted coverage is cheaper, more standardized, and CIGA-backed. It is also worth pausing when the only available E&S carrier is thinly capitalized or unrated, since the missing CIGA backstop makes a weak carrier a real risk. In wildfire-zone cases the practical decision is usually between an E&S single policy and a FAIR Plan + DIC package; the right answer is whichever delivers the coverage the lender requires at the lower total cost. That comparison is the core of what a multi-channel broker does at every renewal.

Frequently Asked Questions

What is surplus lines insurance?

Surplus lines insurance, also called non-admitted or E&S (Excess and Surplus) insurance, is coverage written by specialty carriers that are not licensed by the California Department of Insurance and do not file rates with the state. Because they are not rate-regulated, they can write risks that admitted carriers decline, such as wildfire-zone commercial property. The main tradeoff is that surplus lines policies are not protected by the California Insurance Guarantee Association (CIGA).

What is the difference between admitted and non-admitted (surplus lines) insurance in California?

Admitted carriers are licensed and rate-regulated by the California Department of Insurance and are backed by the California Insurance Guarantee Association (CIGA) if they become insolvent. Non-admitted (surplus lines) carriers are not licensed and not rate-regulated, are not backed by CIGA, and carry a 3% state premium tax plus a 0.18% stamping fee, but they can write hard-to-place risks admitted carriers refuse.

How much are surplus lines taxes and fees in California?

California surplus lines policies carry a 3.0% state premium tax plus a 0.18% stamping fee paid to the Surplus Line Association of California, both calculated on premium and broker fees net of returns. On a $40,000 premium that is roughly $1,200 in tax and about $72 in stamping fee. The 0.18% stamping fee has been in effect since January 1, 2023; confirm the current rate at placement.

Is non-admitted (surplus lines) insurance safe?

Non-admitted does not mean unregulated. Surplus lines carriers are regulated by their home-state regulator and California's surplus lines law, and many carry strong AM Best ratings. The real difference is that there is no CIGA guaranty-fund backstop if the carrier fails, so vetting the carrier's AM Best rating and CDI LASLI status matters more than with an admitted carrier.

How do I find a surplus lines broker in California for commercial property?

Use an independent brokerage that either holds a California surplus line broker license or works directly with a licensed wholesale broker, since a captive agent or ordinary retail agent cannot place E&S coverage. Confirm the surplus license through the CDI license lookup, ask which surplus wholesalers and carriers they can access, and confirm they can also quote the FAIR Plan and a DIC wrap so you can compare the true total cost.

Why is so much California commercial property going to the surplus lines market?

The surplus lines share of California commercial property rose from roughly 6% in 2014 to about 20% by 2025 because admitted carriers retreated from wildfire-exposed property faster than rate filings allowed them to price it. When admitted appetite withdraws, the E&S market absorbs the capacity because it can price the risk freely, making surplus lines frequently the only market for wildfire-zone commercial buildings.

How Latent Insurance Services Helps

Latent Insurance Services is an independent California brokerage (NPN #20972791) that compares admitted, surplus lines (E&S), and FAIR Plan + DIC options in one quote, so you can see whether surplus lines is genuinely your best path or just your most available one. We run the diligent search, document the declinations, vet each non-admitted carrier on AM Best and LASLI status, and read the surplus policy form line by line for the endorsements and deductibles that catch owners off guard. For wildfire-zone commercial property we price the E&S single-policy option against a FAIR Plan + DIC package and reconcile both to your lender's insurance covenant.

To review your specific commercial property exposure and the surplus lines options for it, book a strategy call or start with our pillar guide at California commercial property insurance.

Sources

• California Department of Insurance, List of Approved Surplus Line Insurers (LASLI)
• California Department of Insurance, Surplus Line Insurers overview
• California Department of Insurance, Surplus Line Broker license requirements
• California Legislature, Insurance Code §1763 (diligent search)
• Surplus Line Association of California, Broker Taxes & Fees (3% tax, 0.18% stamping fee)
• Surplus Line Association of California, SL-2 Diligent Search Report instructions
• California Insurance Guarantee Association, CIGA
• AM Best, Rating Center

Last updated: May 29, 2026.