Tier One Mechanical Inc
Tier One Mechanical Inc is an active, licensed contractor operating in Rancho Dominguez, CA. Operating under a California contractor license established in 2020. They hold 3 license classifications including C-16 Fire Protection 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
- 1071811
- Status
- Active
- Classification(s)
- C-16: Fire Protection Contractor, C-20: Warm-Air Heating, Ventilating and Air-Conditioning (HVAC) Contractor, C-36: Plumbing Contractor
- Tenure
- Licensed since 2020 (5 years)
- Issue Date
- December 10, 2020
- Expiration Date
- December 31, 2026
- Disciplinary Record
- No Disciplinary Actions
Bond & Insurance
- Contractor Bond
- Bonded ($25000) – LIBERTY MUTUAL INSURANCE COMPANY
- Workers’ Compensation
- Workers' Compensation Insurance – FEDERAL INSURANCE 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
- 18414 S SANTA FE AVENUE
- City
- Rancho Dominguez, CA
- ZIP Code
- 90221
- Phone
- (310) 637-1500
About These License Types
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.
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.