General Liability Insurance for Contractors: Policy Comparisons and Coverage Guide

General liability insurance for contractors costs most operations between $700 and $3,000 per year for low-risk trades, while high-risk trades like roofing, demolition, and excavation pay significantly more based on payroll, project type, and claims history.

For contractors, general liability is the foundation of the insurance program. It covers third-party bodily injury and property damage, and it is the coverage general contractors and project owners require before you set foot on a job site.

What General Liability Covers for Contractors

General liability responds when a third party is injured or their property is damaged because of your work. The policy has three main coverage parts, and understanding which one responds to which scenario prevents coverage disputes after a claim.

These are the three coverage parts and how they apply to contractor operations.

• Premises and operations: Covers injuries and damage that happen during your work at a job site. A painter’s ladder falls on a homeowner, a plumber floods a bathroom, or a framing crew drops material onto a car parked below
• Products and completed operations: Covers claims that arise after you finish the job and leave the site. An electrical connection you made causes a fire six months later, or a deck you built collapses during a party
• Personal and advertising injury: Covers claims like defamation, false advertising, or wrongful eviction. Less common for contractors but relevant for firms that market aggressively or have disputes with competitors
• Medical payments: Pays small medical bills for third-party injuries on your premises or job sites regardless of fault, up to $5,000 or $10,000. This is a goodwill coverage that settles minor injuries without a lawsuit
• Damage to premises rented to you: Covers fire damage to rented spaces like offices, workshops, or temporary site trailers

What GL Does Not Cover

The exclusions in a contractor’s GL policy are where most coverage disputes originate. Understanding what GL does not cover prevents expensive surprises at claim time and tells you which additional policies the program needs.

Five common exclusions create gaps that contractors discover too late.

• Your own property and equipment: GL covers third-party property only. Your tools, equipment, and materials need an inland marine or contractor’s equipment policy
• Your own employees: Employee injuries are excluded from GL and covered under workers compensation. Operating without workers comp exposes you to both regulatory penalties and uninsured claims
• Vehicles: Any injury or damage caused by a vehicle is excluded from GL. Commercial auto insurance is required for work trucks, vans, and trailers
• Professional errors: Design errors, engineering mistakes, and planning failures need professional liability or errors and omissions coverage, not GL
• Intentional damage and contractual liability: Damage you cause deliberately is excluded, and GL typically does not cover liability you assume by contract unless an insured contract exception applies

How Contractor GL Premiums Are Priced

Carriers price contractor GL using a classification rate multiplied by your exposure base, which is either payroll or gross receipts depending on the trade. The classification rate reflects the inherent risk of your trade, and it varies enormously between low-risk and high-risk work.

These five factors determine where your premium lands within the range.

Executives should also review personal exposure — our guide to personal umbrella insurance covers how to extend liability limits beyond standard policies.

• Trade classification: A painting contractor might pay $8 per $1,000 of payroll while a roofing contractor pays $40 or more. The ISO classification code for your trade is the single biggest cost determinant
• Payroll or gross receipts: The higher your exposure base, the higher the premium. Carriers audit your actual numbers at the end of the policy period and adjust the premium accordingly
• Claims history: A three-to-five-year clean loss run earns the best rates. One or two losses over $25,000 can increase the renewal by 15% to 30%
• Subcontractor management: If you use subcontractors, carriers want to see certificates of insurance, written contracts with indemnification language, and documented sub qualification processes
• Project types: Residential remodel work generally costs less than commercial new construction, and government projects may require higher limits and specific endorsements

Additional Insured and Contract Requirements

Before a subcontractor starts work on most commercial projects, the general contractor or property owner requires proof of insurance with specific provisions. The additional insured endorsement is the most common and most misunderstood requirement in contractor insurance.

GL coverage works alongside builders risk to protect construction projects — our guide to builders risk alongside contractor GL coverage explains how these policies layer and what builders risk actually costs.

General liability is the foundation of every construction insurance program, but it does not stand alone — our guide to contractor general liability and construction coverage details the full coverage stack contractors need.

Meeting these requirements correctly prevents delays, back-charges, and coverage disputes.

• Additional insured endorsement: This adds the GC or property owner to your GL policy as a covered party for claims arising from your work. It does not give them coverage for their own negligence
• Primary and noncontributory: Many contracts require your GL to respond first, before the GC’s own insurance. The primary and noncontributory endorsement accomplishes this
• Waiver of subrogation: This prevents your insurer from suing the GC to recover claim payments. Most construction contracts require it, and carriers charge a small additional premium for the endorsement
• Per-project aggregate: Standard GL has one aggregate limit for all projects combined. The per-project aggregate endorsement gives each project its own aggregate, which is required on larger contracts
• Certificate of insurance timing: Certificates must be in hand before work begins. Our brokers issue same-day certificates and can set up blanket additional insured endorsements that cover all GCs and property owners automatically

Building a Complete Contractor Program

General liability is the foundation, but it is only one component of a complete contractor insurance program. A gap in any of the supporting coverages can leave the business exposed to a loss that GL was never designed to handle.

Mechanical trade contractors need GL policies that account for completed operations and refrigerant liability — see our detailed guide to general liability coverage for HVAC contractors for how standard policies leave gaps.

A complete contractor program stacks these coverages on top of GL.

• Workers compensation: Required by law in virtually every state for contractors with employees. Covers employee injuries and occupational illness, and the premium is based on payroll and trade classification
• Commercial auto: Covers work trucks, vans, and trailers. If any vehicle is used for business purposes, personal auto insurance will not cover a work-related claim
• Inland marine and equipment: Covers tools, equipment, and materials in transit or at job sites. Standard GL and property policies exclude mobile equipment
• Umbrella or excess liability: Extends the limits of GL, auto, and employers liability. Contracts requiring $2M or more in coverage typically need an umbrella policy
• Builders risk: Covers the structure under construction against fire, wind, theft, and vandalism. Required by lenders and often by the property owner’s contract. Our builders risk cost guide breaks down pricing by project type