Conco
Conco is an active, licensed contractor operating in Concord, CA. Operating under a California contractor license established in 1961. They hold 7 license classifications including A General Engineering Contractor, B General Building Contractor, and 5 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
- 199902
- Status
- Active
- Classification(s)
- A: General Engineering Contractor, B: General Building Contractor, C-8: Concrete Contractor, C-50: Reinforcing Steel Contractor, C-51: Structural Steel Contractor, C-60: Welding Contractor, D06: Concrete Related Services
- Tenure
- Licensed since 1961 (64 years)
- Issue Date
- April 17, 1961
- Expiration Date
- June 30, 2026
- Disciplinary Record
- No Disciplinary Actions
Bond & Insurance
- Contractor Bond
- Bonded ($25000) – TRAVELERS CASUALTY AND SURETY COMPANY OF AMERICA
- Workers’ Compensation
- Workers' Compensation Insurance – TRAVELERS INDEMNITY COMPANY (THE)
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
- 5141 COMMERCIAL CIRCLE
- City
- Concord, CA
- ZIP Code
- 94520
- Phone
- (925) 685-6799
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About These License Types
A: General Engineering Contractor
Authorizes construction of fixed works requiring specialized engineering knowledge and skill, including irrigation, drainage, water power, water supply, flood control, inland waterways, harbors, docks, shipyards, dams, hydroelectric projects, levees, railroads, highways, tunnels, airports, sewers, bridges, pipelines, parks, refineries, and power plants.
Not authorized: Does not authorize work under a Class B General Building Contractor license or any specialty (C) classification unless incidental to the engineering project.
B: General Building Contractor
Authorizes construction of structures including residential, commercial, and industrial buildings requiring at least two unrelated building trades or crafts. May take prime contracts or subcontracts for framing or carpentry. May subcontract all specialty work but must hold the appropriate C license to self-perform specialty trade work.
Not authorized: Cannot self-perform specialty trade work (electrical, plumbing, HVAC, etc.) without holding the corresponding C license. Cannot contract for C-16 Fire Protection or C-57 Well Drilling without the appropriate license or subcontractor.
C-8: Concrete Contractor
Forms, pours, places, finishes, and installs specified mass, pavement, flat and other concrete work, and places and sets screeds for pavements or flatwork.
Not authorized: Does not include application of plaster coatings or placing and erecting steel reinforcing bars.
C-50: Reinforcing Steel Contractor
Fabricates, places, and ties steel mesh or steel reinforcing bars of any profile used to reinforce concrete structures.
C-51: Structural Steel Contractor
Fabricates and erects structural steel shapes and plates used as structural members for buildings and structures, including riveting, welding, rigging, and metal roofing systems.
C-60: Welding Contractor
Causes metal to become permanently attached, joined, and fabricated by the use of gases and electrical energy creating sufficient heat.
D06: Concrete Related Services
Installs reusable steel concrete form sections or interlocking precast pavers; performs post-tensioning, concrete sawing, breaking, curing, floor grinding, concrete restoration, and concrete pumping services.
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: April 05, 2026.