A · Building & structure

Insurance Requirements for California General Engineering Contractors

General engineering contractors work on infrastructure and civil projects: highways, bridges, dams, pipelines, airports, sewer systems, and utility installations. The scale and public-facing nature of these projects creates insurance requirements well beyond what most residential contractors carry.

What the CSLB Requires

An A license requires the standard $25,000 contractor license bond and workers' compensation insurance. Given the scale of engineering projects, virtually all A-license holders employ crews and carry active workers' comp coverage.

General Liability for Engineering Contractors

General engineering contractors carry high liability limits relative to other trades. Public works contracts typically specify minimum limits of $2 million to $5 million per occurrence, and larger infrastructure projects may require $10 million or more.

Premiums reflect the scale of exposure. Heavy equipment operation, excavation, blasting, and work in public rights-of-way all contribute to higher rates.

Additional Coverage for Engineering Contractors

1. Professional liability. A-license contractors who provide engineering design services need professional liability (errors and omissions) coverage in addition to general liability.
2. Pollution liability. Infrastructure work often involves soil disturbance, dewatering, and work near contaminated sites. Standard CGL policies typically exclude pollution-related claims.
3. Contractor's equipment coverage. Heavy equipment (excavators, cranes, graders) represents a significant capital investment. Equipment floaters or inland marine policies protect against theft, damage, and breakdown.
4. Performance and payment bonds. Public works contracts in California require separate performance and payment bonds in addition to the CSLB license bond. These are project-specific and typically required at 100% of the contract value.

What Project Owners Should Verify

1. Active A license on the CSLB record.
2. Workers' comp and license bond confirmed current.
3. General liability insurance at limits appropriate for the project scope.
4. Performance and payment bonds if the project is a public work or exceeds residential thresholds.

Related Guides

• Contractor bond and insurance guide
• How to verify a contractor license
• California contractor license requirements

Browse by Trade

• B: General Building Contractor
• C-10: Electrical Contractor
• C-36: Plumbing Contractor
• C-20: HVAC Contractor
• C-39: Roofing Contractor