S O S I
S O S I is an active, licensed contractor operating in Belvedere Tiburon, CA. Operating under a California contractor license established in 1995. They hold 8 license classifications including A General Engineering Contractor, ASB Asbestos Certification, and 6 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
- 702818
- Status
- Active
- Classification(s)
- A: General Engineering Contractor, ASB: Asbestos Certification, B: General Building Contractor, C-10: Electrical Contractor, C-36: Plumbing Contractor, C-55: Water Conditioning Contractor, C-57: Well Drilling Contractor, HAZ: Hazardous Substance Removal Certification
- Tenure
- Licensed since 1995 (31 years)
- Issue Date
- February 17, 1995
- Expiration Date
- February 28, 2027
- Disciplinary Record
- No Disciplinary Actions
Bond & Insurance
- Contractor Bond
- Bonded ($25000) – WESTERN SURETY COMPANY
- Workers’ Compensation
- Workers' Compensation Insurance – STATE COMPENSATION INSURANCE FUND
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
- 200 MARTINIQUE AVE
- City
- Belvedere Tiburon, CA
- ZIP Code
- 94920
- Phone
- (800) 699-7674
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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.
ASB: Asbestos Certification
An add-on certification that allows a contractor to perform asbestos abatement work within the scope of their existing license classification(s). This is not a standalone license.
Not authorized: Can only perform abatement within existing classification scope.
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-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-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).
C-55: Water Conditioning Contractor
Installs water conditioning equipment with only such pipe and fittings as necessary to connect to the water supply system and to bypass excluded portions.
C-57: Well Drilling Contractor
Installs and repairs water wells and pumps by boring, drilling, excavating, casing, cementing, and cleaning to provide a supply of uncontaminated water.
HAZ: Hazardous Substance Removal Certification
An add-on certification for removal of hazardous substances. Only issued to contractors holding A, B, C-12, C-21, C-36, C-57, or C-61/D-40 licenses.
Not authorized: Restricted to contractors holding qualifying base licenses.
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.