There is no statewide minimum limit
The Contractors State License Board requires a license bond and, for most classifications, workers' compensation once there are employees — but for most licensees CSLB does not set a required general liability limit. The exception is an LLC licensee, which must carry liability insurance of at least $1,000,000 (plus $100,000 for each member of the personnel of record beyond five, up to $5,000,000). For everyone else, $1,000,000 per occurrence / $2,000,000 aggregate is common because it is what many contracts and carriers default to, not because it is a legal floor.
That means the actual number that matters is whatever the specific contract, project owner, lender or general contractor requires — and that figure varies by project size and risk.
Sources for this section
- Contractors State License Board (CSLB)Verified 2026-08-21
Where the real number comes from
Public works contracts, larger commercial general contractors and some lenders commonly require umbrella or excess coverage on top of a primary GL policy — $2M, $5M or higher combined limits are routine on larger projects. Residential remodel work for an individual homeowner may never require more than the carrier's standard offering.
Read the actual insurance requirements section of the contract, not just the certificate request — it usually specifies the minimum limit, additional insured status, and whether primary and noncontributory wording is required.
Why the lowest available limit isn't automatically the right choice
Carrying less than a project requires can mean a certificate gets rejected at the worst possible time — after work has started or a bid has been accepted — forcing a rushed endorsement or a lost contract. Carrying meaningfully more than any current contract requires has a cost too.
Reviewing the actual contract requirements before binding, and revisiting the limit as the size of typical projects changes, is usually more useful than picking one limit and never adjusting it.
Common mistake: assuming a personal umbrella covers business work
A personal umbrella policy typically excludes business operations entirely. It does not extend commercial general liability limits for contracting work, even for a sole proprietor working out of a home.
A commercial umbrella or excess liability policy, written over the commercial GL policy, is the correct way to raise limits for business operations.
Coverage remains subject to underwriting
Available limits, pricing and eligibility for any given limit depend on the carrier's underwriting of the specific trade, revenue, subcontractor use and loss history — this post describes how limits are typically set, not a quote.
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Frequently asked questions
7 questions — start typing to filter
Does CSLB require a specific general liability limit?
No. CSLB requires a license bond and, for most contractors with employees, workers' compensation — it does not set a required GL limit. The relevant limit is set by the specific contract or project.
Is $1,000,000 per occurrence enough?
It's a common default and satisfies many smaller contracts, but larger commercial projects, public works, and some general contractors or lenders require higher limits, often with an umbrella or excess layer.
Does a personal umbrella policy cover contracting work?
Typically no — personal umbrella policies generally exclude business operations. A commercial umbrella or excess liability policy is the correct way to raise limits for a contracting business.
How do I know what limit a specific project requires?
Read the insurance requirements section of the actual contract, or ask the general contractor, project owner or lender directly for their written requirement before binding a policy.
Do higher limits always cost proportionally more?
Not necessarily — moving from $1M to $2M per occurrence often costs less per dollar of additional coverage than the base layer itself, since the additional layer is less likely to be reached.
Can a single large claim exhaust a $2M aggregate limit in one policy year?
Yes, especially with multiple claims or one severe claim plus defense costs eroding the aggregate — this is part of why some contracts require per-project aggregate endorsements rather than a shared annual aggregate.
Does umbrella coverage stack on top of the general liability limit automatically?
No — umbrella coverage requires the underlying general liability (and often auto and employer's liability) policy to carry specific minimum limits before the umbrella responds; confirm the underlying limits match what the umbrella policy requires.