Commercial GC Insurance: CGL, Builder's Risk, Umbrella, and AIA Contract Protections

Commercial General Liability (CGL): Your Foundation Policy

Commercial General Liability (CGL) insurance covers third-party bodily injury and property damage claims arising from your construction operations. For a commercial GC, the standard minimum is $1M per occurrence / $2M aggregate, but commercial owners and developers increasingly require $2M per occurrence / $5M aggregate for projects of any significant size.

Key CGL considerations for commercial GCs:

Completed Operations Coverage: CGL covers not just active construction but claims that arise after the project is completed (e.g., a ceiling collapses 18 months after your TI project because of a substrate issue). Completed operations coverage in your CGL continues for years after the project closes. Don't let it lapse — many policies renew annually and completed operations coverage can be inadvertently lost.

Subcontractor provisions: Your CGL policy should include coverage for work performed by subcontractors. Some policies exclude sub work unless they are named or additional insured. Require all your subs to carry their own CGL with limits matching yours, name your company as additional insured, and provide certificates of insurance before they start work.

Additional insured endorsements: Commercial owners will require that their entity be added as an additional insured on your CGL policy. This is standard — have your broker add a blanket additional insured endorsement to your policy so you can comply with any owner's requirement without individual policy changes each time.

Workers' Compensation and Employer's Liability

Workers' compensation is mandatory in every state for any employer with W-2 employees, and it is required on commercial projects before you can pull a building permit. Workers' comp covers medical costs and wage replacement for employees injured on the job.

Employer's Liability (Part B of a workers' comp policy) covers claims by employees who sue you beyond the workers' comp system — coverage limits of $500K/$500K/$500K is standard for commercial work.

Subcontractor workers' comp: Require certificates of insurance from every sub showing active workers' comp coverage before they mobilize. If a sub is uninsured and an employee is injured, your workers' comp policy may be forced to cover the claim, significantly increasing your costs.

Classification codes matter: Workers' comp premiums are calculated based on payroll allocated to specific classification codes (e.g., 5645 for carpentry, 5190 for electrical). Misclassifying employees into lower-rate codes is insurance fraud. Work with a broker who understands construction class codes.

Builder's Risk Insurance

Builder's Risk (also called Installation Floater or Course of Construction insurance) covers the project itself — the structure and materials in place — against physical damage during construction from causes like fire, wind, theft, vandalism, and certain types of water damage.

Who buys builder's risk: Depending on the contract, either the owner or the GC provides builder's risk. AIA A201 assigns builder's risk responsibility to the owner, but some owners push this obligation to the GC. Check your contract carefully.

Coverage scope: Builder's risk covers materials on site, in transit, and temporarily stored off-site (up to a sublimit). It does not cover professional liability (design errors), workers' comp claims, or tools and equipment (covered by a separate inland marine/equipment floater policy).

For a TI project in an occupied building, a wrap-up tenant improvement builder's risk policy from a carrier like Zurich, Travelers, or Markel is appropriate. The policy value should equal the full project value at completion.

Umbrella and Excess Liability: The Commercial Standard

An umbrella (or excess liability) policy sits above your CGL, workers' comp, and auto liability policies, providing additional limits when an underlying policy is exhausted.

For commercial GC work, a $5M umbrella is the practical minimum; many commercial projects require $10M umbrella limits on projects over $5M. Umbrella premiums are relatively affordable given the coverage — expect $3,000–$8,000/year for a $5M umbrella for a startup GC.

Following form: Umbrella policies 'follow form' — they mirror the coverage and exclusions of the underlying CGL. Make sure your umbrella policy follows form to your CGL, including completed operations and additional insured endorsements.

Commercial owner requirements: Review every contract's insurance exhibit carefully. Large commercial projects often specify umbrella requirements exceeding $10M. Get the contract's insurance requirements to your broker before you bind any policy so they can structure your program to comply.

Professional Liability and Design-Build Work

If your commercial GC company offers design-build services — where you are responsible for both design and construction — you have a professional liability exposure that standard CGL does not cover. Design errors, specification mistakes, and coordination failures that result in rework or project failures are professional liability claims.

Professional liability (Errors & Omissions) for design-build GCs: Expect $5,000–$15,000/year in premiums for $1M/$2M limits on a startup design-build GC. Claims-made policy basis means you must keep the policy active continuously — if you let it lapse, you lose coverage for past projects.

If you are purely a construction GC (not providing design services) and you hire a licensed architect or engineer directly, their professional liability sits with them. Ensure your architect/engineer subs carry their own professional liability and name you as additional insured.

OCIP and CCIP: Wrap-Up Insurance for Large Projects

On large commercial projects (typically $10M+), owners or GCs may structure an Owner-Controlled Insurance Program (OCIP) or Contractor-Controlled Insurance Program (CCIP). In a wrap-up program, a single master insurance policy covers all contractors and subcontractors working on the project, rather than each firm maintaining their own policies.

OCIP (Owner-Controlled): The project owner purchases a master CGL, workers' comp, and builder's risk policy covering all enrolled contractors. As the GC, you enroll in the OCIP and exclude the insured trades from your own policy (and receive a credit for the estimated premium you would have spent). Your policy continues to cover non-project work.

CCIP (Contractor-Controlled): Same concept, but the GC purchases the master program and enrolls their subs. CCIPs are increasingly common on large GMP and design-build commercial projects.

For a startup GC, you are more likely to be enrolled in an owner's OCIP than to structure a CCIP. When reviewing an OCIP enrollment, verify the policy limits, exclusions, and claims handling procedures — not all OCIP programs are equal in quality.

AIA Contract Protections: A201 and Risk Allocation

Insurance alone does not protect you — your contract determines how risk is allocated between you, the owner, and your subs. The AIA A201 General Conditions of the Contract for Construction is the industry-standard contract document that defines these allocations.

Key A201 provisions for commercial GCs:

Indemnification (Section 3.18): As GC, you indemnify the owner for claims arising from your work. Review whether this is a 'broad form' indemnity (you indemnify for everything) or 'limited form' (you indemnify only for your own negligence). Broad form indemnity is onerous and increasingly unenforceable in many states.

Retainage (Section 9.3): A201 allows the owner to withhold up to 10% retainage on progress payments. You must flow this down to your subs proportionally. Negotiate retainage reduction clauses — many A201-based contracts now allow reduction to 5% after 50% project completion.

Substantial Completion (Section 9.8): The milestone at which the project is sufficiently complete for the owner to occupy and use it for its intended purpose. Substantial completion triggers: final retainage release (after punch list), warranty period commencement, and the start of the statute of limitations for construction claims in many states.

Flowdown clauses: Your subcontracts should flow down the relevant provisions of the prime contract to your subs. Use AIA A401 (Subcontract Agreement) or a well-drafted custom subcontract reviewed by a construction attorney.

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