What is an ACORD 25 Certificate of Insurance?

ACORD 25 is the standardized form used across the U.S. insurance industry to summarize an insured party's coverage on a single page. It lists general liability, auto liability, umbrella, workers compensation, and other policy information. California construction projects typically require contractors to produce an ACORD 25 before work begins.

What are the minimum insurance limits for California contractors?

Most California general contractors require subcontractors to carry at least $1M per occurrence and $2M aggregate general liability, plus workers compensation as required by state law. Some public works and high-value projects require higher limits. Always read the project's insurance requirements against the ACORD 25 before starting work.

What is an "additional insured" endorsement and why does it matter?

An additional insured endorsement extends your liability policy's coverage to name another party (typically the project owner and/or general contractor) as an insured. California construction contracts almost always require it. A COI that lists the additional insured in the description box but is not backed by an actual endorsement form is a red flag.

What if the policy expires before the project ends?

The contractor must renew before the expiration date and provide an updated ACORD 25. A policy that expires mid-project leaves everyone exposed — including the general contractor who hired the sub. PaidWrite flags any policy expiring before the project completion date provided.

How to Read an ACORD 25 Certificate of Insurance (Contractor's Checklist) — PaidWrite

An ACORD 25 is the single page of insurance paperwork that every California contractor must produce before starting work on most projects. It summarizes — on one standardized form — every insurance policy the contractor carries, so the project owner or general contractor can verify coverage at a glance.

Reading one correctly is a skill every subcontractor needs. A COI with the wrong limits, missing endorsements, or an expired policy can get you removed from a project or leave you uninsured when a claim hits.

What ACORD 25 is

ACORD (Association for Cooperative Operations Research and Development) is the insurance industry's standards body. The ACORD 25 form is the most widely used COI in the United States. Every U.S. insurance carrier uses it; every project owner recognizes it.

The form has five main sections you need to check: producer (broker), insured (you), insurers (who's underwriting each policy), coverages (limits and dates), and certificate holder (who the COI was issued to).

The California contractor's ACORD 25 checklist

1. Named insured matches your business legal name

The "Insured" block (top-left) must match the legal name on your contractor's license. A COI issued to "John Smith" when the license is held by "Smith & Sons Construction, Inc." can be rejected by a project's compliance team.

2. General liability limits meet the project minimum

California residential and commercial projects commonly require:

General Liability: $1,000,000 per occurrence / $2,000,000 aggregate
Products/Completed Operations: $2,000,000 aggregate
Personal & Advertising Injury: $1,000,000

Read the project contract's insurance clause carefully — some public works, high-rise, and owner-controlled-insurance (OCIP) projects require $2M/$4M or higher.

3. Workers compensation shows actual coverage, not an exclusion

California requires workers compensation for every employer with even one employee. An ACORD 25 that shows workers comp as "EXCLUDED" or has the limits section blank is a critical problem if you have employees on the job. Sole proprietors with no employees may legally have none, but a general contractor may still require it.

4. Additional insured status is clearly indicated

Look at the "Description of Operations" box (bottom). It should explicitly state the project owner and/or general contractor is an Additional Insured for ongoing and completed operations. In California, this usually means endorsements CG 20 10 (ongoing) and CG 20 37 (completed operations) are attached to the underlying policy.

Red flag: a COI that mentions "Additional Insured" in the description box but does not identify which endorsement was used, or lists only blanket additional insured wording. Ask for copies of the actual endorsement forms.

5. Policy dates cover the entire project

The effective date must be on or before the work start date, and the expiration date must be on or after the project completion date. A project scheduled to run 8 months cannot be covered by a policy expiring in 6.

6. Waiver of subrogation, if required

Many California construction contracts require a waiver of subrogation in favor of the owner/GC on both general liability and workers compensation. Check the project contract, then look for language in the "Description of Operations" confirming this endorsement is attached.

7. Certificate holder is the right party

The "Certificate Holder" block (bottom-left) should list the exact legal entity the project contract requires — usually the owner, the general contractor, or both. A COI issued to "XYZ Construction" when the contract is with "XYZ Construction Group, Inc." can be rejected on a technicality.

Common ACORD 25 red flags

Handwritten modifications. ACORD 25 is a standardized form. Handwritten edits should never appear on a COI produced by a broker.
Liability limits below project minimums. The most common reason a contractor is kicked off a job at week 1.
Workers compensation "excluded" when employees are on the job. Violates California law.
Additional insured mentioned but no endorsement form referenced. Wording alone is not coverage — you need the actual CG 20 10 / CG 20 37.
Policy expiring mid-project. Renewal must be tracked.

How PaidWrite analyzes your ACORD 25

PaidWrite reads every section of an ACORD 25 against the California minimums and the project requirements you provide. It flags missing endorsements, coverage gaps, expiration risk, and certificate holder mismatches — bilingually, in under 30 seconds.

Related guides

Educational reference. PaidWrite cites California statutes but is not a substitute for a licensed attorney on binding matters. See Disclaimer.