If you swing a hammer, run wire, or manage a crew, one dropped tool or one tripped visitor can turn into a claim larger than your annual profit. Commercial general liability (CGL) insurance is the policy standing between that moment and your business. This guide explains exactly what it does, what it costs for your trade, and how to buy it without overpaying.
What commercial general liability actually is
Commercial general liability - often shortened to CGL, general liability, or just GL - is the foundational business insurance policy that pays when your work causes bodily injury or property damage to someone who isn't you or your employees. It is the coverage most people mean when they say a contractor is insured.
Think of it as third-party coverage. It doesn't protect your stuff or your people; it protects everyone else from the harm your operations might cause, and it protects you from the financial fallout of being blamed for that harm - including the legal cost of defending yourself even when you did nothing wrong.
For contractors, that distinction is everything. Your job takes you onto other people's property, near other people's belongings, and around other people's families. The surface area for an accident is enormous, and a single incident can generate a claim in the tens or hundreds of thousands of dollars.
Why contractors specifically need it
Every business carries some liability exposure, but contracting concentrates it. Three forces stack on top of each other:
You work on-site, in the world. Unlike a shop owner whose risk sits behind a counter, your risk moves with you to every job. New site, new hazards, new people who could be hurt.
Your mistakes are physical and expensive. A misplaced pipe floods a finished basement. A stray spark starts a fire. Property damage from construction work isn't theoretical - it's some of the most common and costly liability in any industry.
Everyone downstream requires it. General contractors won't hire uninsured subs. Homeowners increasingly ask for proof. Commercial clients, property managers, and government projects mandate it in writing, usually with specific limits and an additional-insured endorsement.
The practical reality: for most contractors, general liability stopped being about risk tolerance long ago. It's the ticket to being allowed on the job at all. No certificate, no work.
What it covers - and what it doesn't
A standard CGL policy responds to a defined set of third-party harms. Knowing the boundaries is what separates contractors who use their policy well from those who discover a gap at the worst moment.
What CGL typically covers
- Third-party bodily injury: a client, visitor, or passerby is hurt because of your work or on your job site.
- Third-party property damage: you damage property that belongs to someone else while performing your work.
- Products and completed operations: damage or injury that shows up after a job is finished, tied to the work you did.
- Personal and advertising injury: claims like libel, slander, or copyright issues in your advertising.
- Legal defense costs: attorney fees, court costs, and settlements - often paid even for groundless suits.
What CGL does not cover
- Injuries to your own employees - that's workers' compensation.
- Damage to your own tools, equipment, or materials - that's inland marine or a BOP.
- Your vehicles - that's commercial auto.
- Faulty workmanship you have to redo yourself - GL is not a warranty on your own labor.
- Professional design errors - that's professional liability (E&O).
Biggest misconception: general liability does not fix or pay for your own bad work. If you install something wrong and have to tear it out, that cost is on you. GL steps in when your work harms someone else's person or property.
Is this covered? Test yourself
Tap each situation to see whether a standard general liability policy would typically respond. This is the fastest way to build intuition for where the line sits.
What it costs, by trade
General liability premiums vary widely by trade, because risk varies widely by trade. A handyman doing light interior work is a very different bet than a roofer working three stories up. The ranges below are typical annual premiums for a small U.S. contractor carrying a standard $1M/$2M policy - general estimates, not quotes.
The pattern is height and fire. Trades that work at elevation or with heat - roofers, some HVAC and electrical work - sit at the top because the severity of a possible claim is so high. Lower-risk finishing trades sit at the bottom. Your actual price also moves with revenue, payroll, claims history, location, and whether you use subcontractors.
What contractors actually claim
Understanding where claims come from tells you what your policy is really for. Across contractor GL policies, the mix looks roughly like this - a general illustration of typical claim categories, not a precise statistic.
Notice that property damage and bodily injury together drive the majority of claims - exactly the everyday, physical accidents contracting invites. Note too that legal defense shows up even when there's no payout: being sued costs money regardless of fault, which is one of GL's most underrated benefits.
Understanding your limits and key terms
A few numbers and phrases on your policy do most of the heavy lifting. Learn these and you can read any GL quote.
Per-occurrence limit
The most the policy pays for any single claim. The near-universal standard for contractors is $1,000,000 per occurrence.
Aggregate limit
The most the policy pays across the entire policy year. The standard pairing is $2,000,000 aggregate. Once you exhaust it, you're exposed until renewal - which is one reason active contractors watch it closely.
Additional insured
An endorsement that extends your coverage to another party - usually the general contractor or property owner who hired you. It's the single most-requested item on a certificate of insurance, and often a contractual requirement.
Completed operations
Coverage for damage that appears after you've finished and left. For contractors this is essential, because construction defects and failures frequently surface months later.
Need higher limits? Big commercial and public jobs may require $5M or more. Contractors usually reach those numbers by stacking a commercial umbrella policy on top of a standard $1M/$2M GL, which is far cheaper than raising the base limit.
CGL vs the coverages it's confused with
Most coverage gaps come from assuming general liability does more than it does. Here's how it lines up against the policies contractors most often confuse it with.
| Coverage | Protects against | Do contractors need it? |
|---|---|---|
| General Liability | Injury/damage you cause to others | Almost always - the baseline |
| Workers' Comp | Injury to your own employees | Yes if you have employees (often legally required) |
| Commercial Auto | Accidents in work vehicles | Yes if you drive for the business |
| Tools and Equipment | Your own gear, stolen or damaged | Usually worth it |
| Professional Liability | Design/advice errors | If you design or consult |
| Umbrella | Claims above your other limits | For larger jobs / higher requirements |
Many contractors bundle general liability with property and other coverages into a Business Owner's Policy (BOP), which is often cheaper than buying each piece separately.
How to buy general liability the smart way
Match your limits to your contracts, not your fears. Start with the $1M/$2M standard, then check what your biggest clients actually require and meet that with an umbrella if needed.
Classify your work honestly. Your trade classification drives your rate. Misclassifying to save money can void a claim - the worst possible outcome.
Get certificates and additional-insured endorsements handled early. These are what clients ask for; having them ready wins jobs.
Compare like-for-like. A cheap quote with a lower limit, a big deductible, or a completed-operations exclusion isn't cheaper - it's less coverage.
Understand before you sign. Read what's excluded. The gaps you don't know about are the ones that hurt.
Frequently asked questions
Do sole proprietors and 1-person contractor businesses need general liability?+
Yes, in almost every case. Liability exists the moment your work touches someone else's property or safety, regardless of company size. Most clients, general contractors, and landlords also require proof of GL before they let you on site - so for many one-person operations it's less optional than it feels.
How much general liability coverage do contractors usually carry?+
The most common baseline is $1,000,000 per occurrence and $2,000,000 aggregate. Larger commercial and public projects frequently require higher limits, which contractors typically reach by adding a commercial umbrella policy on top rather than raising the GL limit directly.
Is general liability the same as being licensed and insured?+
Not quite. Licensed refers to your trade license; insured usually means you carry general liability (and often workers' comp). They're separate - a license doesn't pay for damage you cause, and GL doesn't make you licensed.
Does general liability cover my tools and equipment?+
No. GL covers damage or injury you cause to others. Your own tools, equipment, and materials are covered by separate policies like inland marine or a business owner's policy (BOP). This is one of the most common misunderstandings.
Why do general contractors ask subs for a certificate of insurance?+
Because a sub's claim can otherwise land on the GC's policy. The certificate (COI), often with the GC named as an additional insured, pushes liability for the sub's work back onto the sub's own GL policy.
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Start your free assessmentThis article is general educational information, not insurance advice or a quote. Cost figures are typical ranges, not offers. Coverage terms vary by policy and carrier - always confirm details with a licensed insurance professional.