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C-20 — Warm-Air Heating, Ventilating and Air-Conditioning Contractor

Compliance obligations for California C-20 (Warm-Air Heating, Ventilating and Air-Conditioning Contractor) contractors. Keep every deadline tracked to stay licensed and avoid penalties.

Compliance Obligations

ObligationAgencyCycleFee
CSLB Contractor License RenewalContractors State License Board (CSLB)2 years$450
Contractor License BondContractors State License Board (CSLB)continuous$25,000
Bond of Qualifying IndividualContractors State License Board (CSLB)continuous$25,000
LLC Employee/Worker BondContractors State License Board (CSLB)continuous$100,000
Workers' Compensation InsuranceDepartment of Industrial Relations (DIR)annualVaries by classification and payroll

Workers' Compensation

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Workers' comp is required for C-20 contractors.

Mandatory date: 2023-01-01 (Phase 1). Contractors with employees must carry workers' compensation insurance at all times.

Scope of Work

View full statutory scope of work

A warm-air heating, ventilating and air-conditioning contractor fabricates, installs, maintains, services and repairs warm-air heating systems and water heating heat pumps, complete with warm-air appliances; ventilating systems complete with blowers and plenum chambers; air-conditioning systems complete with air-conditioning unit; and the ducts, registers, flues, humidity and thermostatic controls and air filters in connection with any of these systems. This classification shall include warm-air heating, ventilating and air-conditioning systems which utilize solar energy.

Track your C-20 deadlines automatically.

PermitCal pre-loads every compliance deadline for C-20 (Warm-Air Heating, Ventilating and Air-Conditioning Contractor) contractors. Join the waitlist.

City Business Licenses

In addition to state requirements, you may need a city business license.