Bobbie Knowles Plumbing
Bobbie Knowles Plumbing is an active, licensed contractor operating in Vallejo, CA. Operating under a California contractor license established in 2016. They hold 3 license classifications including C-4 Boiler, Hot-Water Heating and Steam Fitting Contractor, C-20 Warm-Air Heating, Ventilating and Air-Conditioning (HVAC) Contractor, and 1 others. They currently maintain an active contractor bond and workers' compensation insurance. No disciplinary actions have been recorded against this license.
License Information
- License Number
- 1018989
- Status
- Active
- Classification(s)
- C-4: Boiler, Hot-Water Heating and Steam Fitting Contractor, C-20: Warm-Air Heating, Ventilating and Air-Conditioning (HVAC) Contractor, C-36: Plumbing Contractor
- Tenure
- Licensed since 2016 (9 years)
- Issue Date
- October 04, 2016
- Expiration Date
- October 31, 2026
- Disciplinary Record
- No Disciplinary Actions
Bond & Insurance
- Contractor Bond
- Bonded ($25000) – AMERICAN CONTRACTORS INDEMNITY COMPANY
- Workers’ Compensation
- Workers' Compensation Insurance – CONTINENTAL CASUALTY COMPANY
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
- 300 MCGRUE AVE
- City
- Vallejo, CA
- ZIP Code
- 94589
- Phone
- (510) 307-6603
About These License Types
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-20: Warm-Air Heating, Ventilating and Air-Conditioning (HVAC) Contractor
Fabricates, installs, maintains, services, and repairs warm-air heating systems and water heating heat pumps, ventilating systems, air-conditioning systems, and the ducts, registers, flues, humidity and thermostatic controls and air filters in connection with these systems. Includes solar-powered HVAC systems.
Not authorized: Does not include boiler or steam heating (see C-4) or refrigeration below 50F (see C-38).
C-36: Plumbing Contractor
Provides means for a supply of safe water and proper disposal of fluid waste, including piping, storage tanks, venting, gas appliances and connections, water and gas piping, water heating equipment including solar, and health and safety devices such as backflow preventers and gas earthquake valves.
Not authorized: Does not include forced warm-air units (see C-20).
Verify on Official CSLB Website
License data sourced from the California Contractors State License Board. Last data update: February 20, 2026.