Pioneer Builders
Pioneer Builders is a licensed contractor in Sonoma, CA whose license is currently suspended. Operating under a California contractor license established in 1989. They hold 3 license classifications including A General Engineering Contractor, C-4 Boiler, Hot-Water Heating and Steam Fitting Contractor, and 1 others. This license is currently suspended due to a contractor bond issue. Verify bond and insurance status on the official CSLB website before hiring. This license has a current suspension on record. Check the official CSLB website for full details before hiring this contractor.
License Information
- License Number
- 555580
- Status
- Suspended Suspended - Contractor Bond
- Classification(s)
- A: General Engineering Contractor, C-4: Boiler, Hot-Water Heating and Steam Fitting Contractor, C-16: Fire Protection Contractor
- Tenure
- Licensed since 1989 (37 years)
- Issue Date
- January 27, 1989
- Expiration Date
- January 31, 2027
- Disciplinary Record
- No Disciplinary Actions
Bond & Insurance
- Contractor Bond
- Bonded ($25000) – AMERICAN CONTRACTORS INDEMNITY COMPANY
- Workers’ Compensation
- Exempt
A contractor’s bond protects consumers up to the bond amount if the contractor fails to fulfill contractual obligations or violates CSLB regulations.
Workers’ compensation insurance protects homeowners from liability if a contractor’s employee is injured on the job site.
Location
- Address
- 18095 LUCAS AVE
- City
- Sonoma, CA
- ZIP Code
- 95476
- Phone
- (415) 559-6759
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About These License Types
A: General Engineering Contractor
Authorizes construction of fixed works requiring specialized engineering knowledge and skill, including irrigation, drainage, water power, water supply, flood control, inland waterways, harbors, docks, shipyards, dams, hydroelectric projects, levees, railroads, highways, tunnels, airports, sewers, bridges, pipelines, parks, refineries, and power plants.
Not authorized: Does not authorize work under a Class B General Building Contractor license or any specialty (C) classification unless incidental to the engineering project.
C-4: Boiler, Hot-Water Heating and Steam Fitting Contractor
Installs, services, and repairs power boiler installations, hot-water heating systems and steam fitting, including fire-tube and water-tube boilers, piping, fittings, valves, gauges, pumps, radiators, fuel oil tanks, chimneys, flues, and associated solar heating equipment.
Not authorized: Does not include warm-air heating or air conditioning systems (see C-20).
C-16: Fire Protection Contractor
Lays out, fabricates, and installs all types of fire protection systems including all associated equipment.
Not authorized: Does not include electrical alarm systems.
Licensing Resources
What does a workers' comp exemption mean?
How to verify a contractor license
Deposit and payment rules for California contracts
Home improvement contract requirements
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License data sourced from the California Contractors State License Board. Last data update: April 05, 2026.