General Contractor Insurance: The Coverages GCs Need and the Subcontractor Gaps That Sink Claims

Quick answer: General contractors need six core coverages — general liability, workers' compensation, commercial auto, builder's risk, tools and equipment (inland marine), and excess/umbrella liability. The most damaging gaps come from subcontractors: missing additional-insured endorsements, expired certificates of insurance, and no waiver of subrogation can push a sub's loss straight onto your policy.

A general contractor carries risk that is not entirely its own. You coordinate subcontractors, control the job site, sign contracts that require specific coverage, and stay on the hook for the finished building long after the crews leave. When a sub is uninsured, underinsured, or improperly endorsed, that exposure rolls uphill to you. This guide covers the coverages a GC needs and the subcontractor-driven gaps that most often turn into unpaid claims.

The Six Core Coverages Every General Contractor Needs

General liability (GL)

GL responds to third-party bodily injury and property damage arising from your operations — a visitor injured on site, damage to an adjacent structure, or water intrusion during construction. For GCs, completed-operations coverage is critical because construction-defect claims often surface months or years after a project is finished.

Workers' compensation

Workers' comp pays medical bills and lost wages for injured employees and is required in most states once you hire staff. It matters even if you run a lean office: if an uninsured subcontractor's worker is hurt on your job, your workers' comp policy can be tapped, and your audit can be charged for uninsured subs.

Commercial auto

Trucks, trailers, and equipment haulers need commercial auto because personal policies exclude business use. Include hired and non-owned auto so employees driving their own vehicles for work are covered.

Builder's risk

Builder's risk (course-of-construction) covers the structure and materials while a project is being built — protecting against fire, wind, theft, and vandalism before the building is complete. Confirm who is responsible for placing it on each contract; gaps here are common.

Tools and equipment (inland marine)

A contractor's equipment floater covers tools, machinery, and materials wherever they are — in transit, on site, or in storage. Larger equipment and rented gear should be scheduled or covered on a blanket basis.

Excess/umbrella liability

Umbrella coverage sits on top of your GL and auto limits for catastrophic claims. Owners and developers increasingly require GCs to carry $5M or more before awarding contracts.

The Subcontractor Gaps That Catch GCs Off Guard

Missing additional-insured endorsements

A certificate of insurance is only proof a policy existed on the day it was issued — it does not amend the policy. To actually be protected under a sub's policy, you need the correct additional-insured endorsement on that policy. Many GCs collect certificates and assume they are covered when they are not.

Expired or unverified certificates

Sub policies expire mid-project, and renewal certificates rarely arrive on their own. Tracking dozens of expiration dates by hand is how coverage gaps open up right when a loss occurs.

No waiver of subrogation

Without a waiver, a sub's insurer can pay a claim and then sue you to recover the money, even if you were only partly at fault. Waivers may be required by line — GL, workers' comp, auto, and builder's risk — so check each one against the contract.

Uninsured or underinsured subs

If a sub carries no coverage, thin limits, or exclusions for the work they perform, their loss becomes your loss. Require certificates, verify limits match the contract, and confirm the sub's policy does not exclude the trade they are doing.

Completed-operations and contractual-liability gaps

Construction-defect suits arrive after the job closes. If completed operations is limited, or your contractual-liability coverage does not back the indemnity language you signed, you can be exposed exactly where GCs get sued most.

Key Takeaways

• GCs need six core coverages: GL, workers' comp, commercial auto, builder's risk, tools and equipment, and excess/umbrella.
• A certificate of insurance is not coverage — insist on the additional-insured endorsement itself.
• Track subcontractor policy expirations so coverage never lapses mid-project.
• Require waivers of subrogation by line, matched to your contract.
• Completed-operations coverage protects you against construction-defect claims that surface after closeout.

Frequently Asked Questions

What insurance does a general contractor need?

At minimum, general liability, workers' compensation, and commercial auto. Most GCs also carry builder's risk on active projects, a tools-and-equipment (inland marine) floater, and an excess/umbrella policy to satisfy owner and developer requirements.

What is the difference between a certificate holder and an additional insured?

A certificate holder simply receives proof that a policy existed on a given date. An additional insured is actually granted protection under the policy — but only when the correct endorsement has been added. GCs should require the endorsement, not just the certificate.

Why do general contractors require a waiver of subrogation from subs?

A waiver prevents the sub's insurer from suing the GC to recover money it paid on a claim. It keeps a single loss from turning into litigation between project partners and is commonly required across GL, workers' comp, auto, and builder's risk.

Who is responsible for builder's risk on a construction project?

It depends on the contract — sometimes the owner places it, sometimes the GC does. The critical step is confirming in writing who carries it on each job so the structure is never left uninsured during construction.

How much does general contractor insurance cost?

Premiums vary widely with revenue, payroll, trade mix, subcontractor use, project size, and claims history. Workers' comp and GL are usually the largest line items, so a tailored quote is the only accurate answer.