California Contractor Insurance

Professional Liability Insurance E&O Coverage for Design-Build Contractors

Professional liability (E&O) covers design errors and bad advice that general liability excludes. Which California contractors need it.

Quick answer: Professional liability, also called errors and omissions (E&O), covers claims that your professional advice, design or project management was wrong and caused a client financial loss. General liability excludes professional services, so design-build contractors, construction managers and contractors who prepare plans or specifications often need it.

What GL does not cover

ClaimGeneral liabilityProfessional liability
A worker's mistake injures a customerYesNo
A tool damages the customer's floorYesNo
Your design or plans are wrong and the client must redo workUsually excludedYes, if it arises from a covered professional service
Bad cost estimate or project management causes delay and lossUsually excludedMay be covered, subject to terms
Failure to follow specifications you were hired to prepareUsually excludedMay be covered

Who should consider it

  • Design-build contractors, who design as well as build
  • Construction managers and owner's representatives
  • Contractors who prepare plans, drawings or engineering
  • Contractors who recommend materials or systems and are paid for that advice
  • Anyone whose contract requires professional liability limits

How it is written

  • Most professional liability is claims-made. The claim must be made while the policy is in force, and the policy has a retroactive date
  • Defense costs are often inside the limit, so they reduce what is left for a settlement
  • Some contractor programs combine it with pollution liability, which can cost less than two separate policies

Get a professional liability quote

Tell us what you design, advise or manage and your revenue and we will show you carriers and limits. Call (858) 925-9555 or request a review online — only your name, phone and email are required; we collect project details by phone. Asena Capital Insurance Services, CA License #6008596.

Frequently asked questions

Is professional liability the same as general liability?

No. General liability covers bodily injury and property damage. Professional liability covers financial loss from professional errors in design or advice.

Does a contractor need E&O insurance?

Only if you provide design, engineering, management or advice, or a contract requires it. A contractor who only builds to someone else's plans usually does not.

What does claims-made mean?

The policy covers claims first made during the policy period, subject to the retroactive date. It does not cover claims made after the policy ends unless you buy extended reporting.

Can I get professional liability with pollution liability?

Some contractor programs offer them together.

Sources

Related pages

Reviewed by Roy Elshad, California-licensed insurance broker, CA License #6008596 — October 4, 2026.

General information only, not legal advice; your contract and policy wording control.

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