COI Compliance Checklist for Construction Projects [2026]

A COI compliance checklist for construction projects is a structured verification tool that ensures every subcontractor and vendor carries the insurance coverage required by your contract. At minimum, construction COIs should include Commercial General Liability, Automobile Liability, Workers Compensation, and Umbrella/Excess Liability — each meeting specific limit thresholds — along with key endorsements like Additional Insured, Waiver of Subrogation, and Primary and Non-Contributory status. Without a systematic checklist, gaps in coverage go undetected until a claim forces them into the open.

Construction is one of the highest-risk industries for third-party liability. A single jobsite incident involving an uninsured or underinsured subcontractor can generate seven-figure claims against the general contractor and project owner. This guide provides the complete checklist operations teams need in 2026 to verify subcontractor insurance compliance before work begins.

Minimum Coverage Limits for Construction COIs

Insurance requirements vary by project size, contract value, and risk profile, but the following limits represent the industry standard for most commercial construction projects. Your contract language should specify exact requirements — this checklist serves as a baseline.

Standard Construction COI Limits Checklist

1. Commercial General Liability (CGL)

   • Each Occurrence: $1,000,000 minimum
   • General Aggregate: $2,000,000 minimum
   • Products/Completed Operations Aggregate: $2,000,000 minimum
   • Personal & Advertising Injury: $1,000,000 minimum
   • Damage to Rented Premises: $100,000 minimum
   • Medical Expense: $5,000 minimum
   • Form type: Occurrence (not Claims-Made)

2. Automobile Liability

   • Combined Single Limit: $1,000,000 minimum
   • Coverage must include: Any Auto (owned, hired, non-owned)

3. Umbrella / Excess Liability

   • Each Occurrence: $5,000,000 minimum (varies by project; large projects may require $10M+)
   • Aggregate: $5,000,000 minimum
   • Must follow form over CGL, Auto, and Employers Liability

4. Workers Compensation

   • Statutory limits (as required by the state where work is performed)
   • Employers Liability: $1,000,000 each accident
   • Employers Liability: $1,000,000 disease per employee
   • Employers Liability: $1,000,000 disease policy limit

5. Professional Liability (if applicable — design-build, engineering)

   • Per Claim: $1,000,000 minimum
   • Aggregate: $2,000,000 minimum
   • Retroactive date must precede the contract date

These limits are negotiable but should never be reduced without explicit risk acceptance by your risk management team. Subcontractors who cannot meet these thresholds should either increase their coverage or be replaced with subcontractors who can.

Endorsement Requirements: The Critical Details

Coverage limits are only part of the equation. Endorsements modify the standard policy to extend protections to the parties your contract is designed to protect. Missing endorsements represent some of the most dangerous gaps in construction insurance programs because they are easy to overlook on a COI and devastating when they matter most.

Required Endorsements Checklist

1. Additional Insured — Ongoing Operations (CG 20 10)

   • Names the project owner, general contractor, and other upstream parties as Additional Insureds
   • Provides coverage for bodily injury and property damage arising from the subcontractor's ongoing work
   • The exact legal entity name must appear on the endorsement schedule
   • Edition date matters: CG 20 10 04 13 is the current standard; earlier editions (07 04, 10 01) provided broader coverage

2. Additional Insured — Completed Operations (CG 20 37)

   • Extends Additional Insured coverage to claims arising after the subcontractor's work is complete
   • Essential for construction defect, latent injury, and warranty-period claims
   • Without CG 20 37, your Additional Insured protection evaporates the moment the subcontractor finishes their scope
   • This is the single most commonly missed endorsement in construction COI programs

3. Waiver of Subrogation (CG 24 04)

   • Prevents the subcontractor's insurer from seeking reimbursement from your organization after paying a claim
   • Without this waiver, you could pay for a loss through your own policy and then face a subrogation claim from the subcontractor's insurer
   • Must be in place before any loss occurs

4. Primary and Non-Contributory (CG 20 01 or policy language)

   • Requires the subcontractor's policy to respond first, before your own insurance
   • Prevents your policy from sharing in the loss on a pro-rata or contribution basis
   • Without P&NC language, a claim could trigger both policies simultaneously, increasing your loss history and future premiums

5. Per Project Aggregate (CG 25 03)

   • Dedicates the full aggregate limit to your specific project
   • Without this endorsement, the subcontractor's aggregate could be eroded by claims on other projects, leaving insufficient limits for yours

Endorsement Verification Process

Seeing endorsement language in the Description of Operations section of a COI is encouraging but not sufficient. A thorough verification process includes:

1. Confirm the endorsement form number and edition date are referenced on the COI
2. Request a copy of the actual endorsement page from the subcontractor's agent
3. Verify your exact legal entity name appears in the endorsement schedule
4. Confirm the endorsement effective date covers your project timeline
5. File the endorsement alongside the COI in your compliance records

Common Coverage Gaps in Construction COIs

After reviewing thousands of construction COIs, certain gaps appear with alarming frequency. These are the deficiencies that expose project owners and general contractors to the greatest risk.

Gap 1: CG 20 10 without CG 20 37. The COI references Additional Insured status for ongoing operations, but the completed operations endorsement is absent. This is the most dangerous gap in construction insurance because construction defect claims typically emerge years after the work is done — exactly when CG 20 37 coverage is needed.

Gap 2: Claims-Made CGL instead of Occurrence. A claims-made policy only covers claims reported during the policy period. If the subcontractor switches insurers or lets the policy lapse, claims arising from work performed during the policy period may have no coverage. Occurrence-form CGL is the standard for construction.

Gap 3: Expired policies. It sounds obvious, but expired certificates slip through more often than anyone would like to admit. A subcontractor mobilizes on a new phase of work, and no one checks whether their January COI is still valid in July. Automated expiration tracking eliminates this risk entirely.

Gap 4: Insufficient umbrella limits. The CGL meets the per-occurrence requirement, but the umbrella policy falls short. On large construction projects, a single serious injury can exceed the CGL limits within hours. The umbrella is your buffer.

Gap 5: Workers Compensation exclusions. Some states allow sole proprietors or small firms to opt out of Workers Compensation. If an uninsured worker is injured on your jobsite, the project owner's insurance may be the only available coverage. Always require statutory WC from every subcontractor, or obtain a valid exemption certificate.

Gap 6: Wrong certificate holder name. The COI lists "Smith Development" but your legal entity is "Smith Development Group LLC." In a coverage dispute, the insurer may argue that the Additional Insured endorsement does not apply because the entity name does not match. Precision matters.

Building an Expiration Tracking System

Certificate expiration is not a one-time check — it is an ongoing process that lasts for the duration of every vendor and subcontractor relationship. An effective tracking system includes:

1. Central repository — Every COI is stored in a single, searchable system (not scattered across email inboxes and shared drives).
2. Expiration calendar — Every coverage line's expiration date is logged and monitored. Alerts fire at 60, 30, and 14 days before expiration.
3. Renewal follow-up workflow — When an alert fires, the system generates a renewal request to the subcontractor or their agent. If the renewal is not received by the expiration date, the subcontractor's compliance status changes to "non-compliant."
4. Hold work authority — Non-compliant subcontractors should not perform work until valid coverage is restored. This requires coordination between the compliance team and the field operations team.
5. Audit trail — Every certificate received, every compliance check performed, and every deficiency notice sent should be logged with timestamps. If a claim is filed three years later, this documentation proves your diligence.

Spreadsheet-based tracking works for small portfolios (under 20 subcontractors), but it breaks down quickly as volume increases. Automated COI compliance tools like unifi.ai can read certificates, compare them against your requirements, flag deficiencies, and track expirations — reducing the manual burden from hours to minutes. See pricing for plans that include batch processing and automated alerts.

Industry-Specific Considerations

Different construction sectors have additional insurance requirements beyond the standard checklist:

Residential construction typically requires completed operations coverage for an extended period (often matching the statute of repose in the applicable state, which can be 6-12 years). Builder's risk insurance is often provided by the project owner but should be verified.

Infrastructure and heavy civil projects often require higher umbrella limits ($10M-$25M), railroad protective liability if work occurs near rail lines, and pollution liability for projects involving excavation or environmental remediation.

Commercial interior buildouts may have lower limit requirements but still require full endorsement packages. The building owner (landlord) will typically require Additional Insured status on both the tenant's and the contractor's policies.

Government and public works projects frequently require payment and performance bonds in addition to insurance, and may have specific insurance requirements set by statute rather than contract negotiation.

The Complete COI Compliance Checklist

Use this consolidated checklist to verify every subcontractor COI before allowing work to begin:

1. Named Insured matches contracted entity name exactly
2. Certificate date is current (not a stale reissue)
3. CGL — Occurrence form, per-occurrence limit meets contract minimum
4. CGL — General aggregate meets contract minimum
5. CGL — Products/completed operations aggregate meets contract minimum
6. Auto — Combined single limit meets contract minimum, "Any Auto" selected
7. Umbrella — Each occurrence meets contract minimum, follows form over CGL/Auto/EL
8. Workers Compensation — Statutory limits, employers liability meets contract minimum
9. Additional Insured — CG 20 10 referenced (ongoing operations)
10. Additional Insured — CG 20 37 referenced (completed operations)
11. Waiver of Subrogation — CG 24 04 referenced
12. Primary and Non-Contributory language present
13. Certificate Holder name matches your exact legal entity
14. All policy expiration dates are at least 30 days in the future
15. Insurer financial strength ratings are A- VII or better (A.M. Best)
16. Actual endorsement documents collected and filed (not just COI references)

Frequently Asked Questions

What happens if a subcontractor cannot meet the insurance requirements?

You have several options: negotiate lower limits with documented risk acceptance from your risk management team, require the subcontractor to purchase additional coverage (which they can often do through their broker), or engage a different subcontractor who already meets the requirements. Never waive insurance requirements verbally or informally — any modification should be documented in a written amendment to the contract.

How often should I re-verify subcontractor COIs?

At minimum, re-verify at every policy renewal (typically annually). Best practice is to also re-verify at the start of each new project phase, after any change in scope, and whenever you receive a certificate that was not specifically requested. Automated expiration tracking ensures you never miss a renewal date.

Is the general contractor liable if a subcontractor's insurance lapses?

Potentially, yes. Under the doctrine of respondeat superior and various contractual indemnification theories, a general contractor can be held liable for the acts of its subcontractors. If the subcontractor's insurance has lapsed, the general contractor's own policy — and ultimately the general contractor's assets — may be exposed. A robust COI compliance program is the general contractor's primary defense.

Do I need to verify the actual endorsement, or is the COI reference sufficient?

The COI reference is a starting point, not proof. The ACORD 25 form itself states that it "does not amend, extend, or alter the coverage afforded by the policies." Only the actual endorsement document, attached to the policy, can confirm that the coverage exists, that the correct entities are named, and that the endorsement terms match your contract requirements.

What is the difference between CG 20 10 and CG 20 37?

CG 20 10 provides Additional Insured coverage for claims arising from the subcontractor's ongoing operations — work that is currently in progress. CG 20 37 provides Additional Insured coverage for claims arising from the subcontractor's completed operations — work that has been finished. Construction projects need both because many of the most serious claims (structural defects, latent injuries) do not manifest until after the work is complete.

---

Construction COI compliance is too important and too complex to leave to manual processes. A single missed endorsement or expired policy can expose your project to catastrophic liability.

Try unifi.ai free — no signup required.