Contractors want one number for general liability, and the coverage never gives it cleanly. The premium is built from what you do, how big the operation is, and how the work gets done. The honest way to get a real number is a quote built on your actual trade, payroll, and history. What follows are the drivers that move the price, ranked roughly from the ones that matter most to the ones that matter least, and why each one works the way it does. For the broader picture across all contractor coverages, see how much contractor insurance costs.
Trade class and scope, the first read
Your trade is the first thing a carrier looks at, and it sets the tier everything else builds on. Roofing, framing, excavation, electrical, and interior finish carry very different exposures, so the class code assigned to your work matters more than almost any other input. This is why getting the class right is the highest-value thing you can check. If your work has drifted, say from new construction toward remodels, but your class code has not, you may be rated against exposure you do not carry. That mismatch is common, and it is worth fixing before you shop. See class code misclassification for how this goes wrong.
Payroll and receipts, the size of the exposure
After the class, the carrier scales the exposure by how big you are. General liability for contractors is commonly rated on payroll, gross receipts, or both, because those numbers track how much work you are putting into the world. More work means more chances for something to go wrong, so the premium moves with the size of the operation. This is not a penalty for growing. It is the rating following the exposure, and it is why an honest payroll figure at the start avoids a surprise later.
Subcontracted work
How you use subcontractors is one of the strongest levers you control. Subcontracted payroll is generally rated, and the way you hire matters. If your subs carry their own general liability and workers comp, and you collect certificates of insurance and require the right additional insured status, the account tends to read better. If you cannot show that paper, a carrier may assume the exposure sits with you and rate accordingly. See what happens without a sub certificate.
Claims and loss history
History follows the account. Prior general liability claims, especially construction defect or property damage losses, raise how a carrier reads future risk. A clean multi-year record works in your favor over time. This driver rewards patience, because the discipline you build now, from good contracts to documented job practices, is what a future underwriter sees.
Residential versus commercial exposure
Where you work shapes the risk. Residential construction, remodels, and anything tied to homes tend to be viewed differently than commercial jobs, in part because of construction defect exposure and the way homeowner claims develop. Many carriers have appetite limits or surcharges around residential work. If your mix shifts, your rating should reflect it. See residential restrictions on a commercial policy.
Limits and structure
Your limits and how the policy is built round out the price. Higher per-occurrence and aggregate limits add premium, though often less than contractors expect, and your contracts may require a floor anyway. Deductibles, whether the policy is written occurrence or claims made, and whether general liability is bundled into a package all shape the final number. These are choices, and matching them to your contracts and real exposure beats guessing.
Questions to ask your advisor
- Is my class code an accurate match for the work I actually do today?
- Are my payroll and receipts figures current, so I am not over or under rated?
- How is my subcontractor use being rated, and is my certificate process tight?
- Do my limits meet my contract requirements without overbuying?
- Is my residential and commercial mix reflected correctly in the rating?
A coverage review looks at both sides: that you are not overpaying for exposure you do not carry, and that you are not underinsured against the work you actually do. On general liability, the trade class and the subcontractor paper are usually where the money and the risk both hide.
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