C-36 — Plumbing Contractor
Compliance obligations for California C-36 (Plumbing Contractor) contractors. Keep every deadline tracked to stay licensed and avoid penalties.
Compliance Obligations
| Obligation | Agency | Cycle | Fee |
|---|---|---|---|
| CSLB Contractor License Renewal | Contractors State License Board (CSLB) | 2 years | $450 |
| Contractor License Bond | Contractors State License Board (CSLB) | continuous | $25,000 |
| Bond of Qualifying Individual | Contractors State License Board (CSLB) | continuous | $25,000 |
| LLC Employee/Worker Bond | Contractors State License Board (CSLB) | continuous | $100,000 |
| Workers' Compensation Insurance | Department of Industrial Relations (DIR) | annual | Varies by classification and payroll |
| Cal/OSHA: Permit required before starting any trench or excavation 5 feet or more in depth | Cal/OSHA - Division of Occupational Safety and Health (DOSH) | annual | Varies |
Cal/OSHA Permits Required
C-36 contractors may need the following Cal/OSHA permits depending on project scope.
Workers' Compensation
Workers' comp is required for C-36 contractors.
Mandatory date: 2028-01-01 (Phase 2). Contractors with employees must carry workers' compensation insurance at all times.
Scope of Work
View full statutory scope of work ▼
A plumbing contractor provides a means for a supply of safe water, ample in volume and of suitable temperature for the purpose intended and the proper disposal of fluid waste from the premises in all structures and fixed works. This classification includes but is not limited to: (a)Complete removal of waste from the premises or the construction and connection of on-site waste disposal systems; (b)Piping, storage tanks and venting for a safe and adequate supply of gases and liquids for any purpose, including vacuum, compressed air and gases for medical, dental, commercial and industrial uses; (c)All gas appliances, flues and gas connections for all systems including suspended space heating units. This does not include forced warm air units; (d)Water and gas piping from the property owner's side of the utility meter to the structure or fixed works; (e) Installation of any type of equipment to heat water, or fluids, to a temperature suitable for the purposes listed in this section, including the installation of solar equipment for this purpose; and (f)The maintenance and replacement of all items described above and all health and safety devices such as, but not limited to, gas earthquake valves, gas control valves, back flow preventers, water conditioning equipment and regulating valves.
Track your C-36 deadlines automatically.
PermitCal pre-loads every compliance deadline for C-36 (Plumbing Contractor) contractors. Join the waitlist.
City Business Licenses
In addition to state requirements, you may need a city business license.