Julio Antonio Castillo
Julio Antonio Castillo is an active, licensed contractor operating in Ontario, CA. Operating under a California contractor license established in 2004. They hold C-10 Electrical Contractor and C-20 Warm-Air Heating, Ventilating and Air-Conditioning (HVAC) Contractor licenses. They currently maintain an active contractor bond and workers' compensation insurance. No disciplinary actions have been recorded against this license.
License Information
- License Number
- 844311
- Status
- Active
- Classification(s)
- C-10: Electrical Contractor, C-20: Warm-Air Heating, Ventilating and Air-Conditioning (HVAC) Contractor
- Tenure
- Licensed since 2004 (21 years)
- Issue Date
- August 09, 2004
- Expiration Date
- August 31, 2026
- Disciplinary Record
- No Disciplinary Actions
Bond & Insurance
- Contractor Bond
- Bonded ($25000) – WESTERN SURETY COMPANY
- Workers’ Compensation
- Workers' Compensation Insurance – CLEAR SPRING PROPERTY AND 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
- 750 E PLAZA SERENA
- City
- Ontario, CA
- ZIP Code
- 91764
- Phone
- (909) 648-1062
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About These License Types
C-10: Electrical Contractor
Places, installs, erects, or connects electrical wires, fixtures, appliances, apparatus, raceways, conduits, solar photovoltaic cells, or any part thereof which generate, transmit, transform, or utilize electrical energy.
Not authorized: Electricians working under a C-10 must be certified per CA Labor Code.
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).
Licensing Resources
Workers' comp requirements for California contractors
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: May 31, 2026.