Stroer & Graff Inc
Stroer & Graff Inc is an active, licensed contractor operating in Antioch, CA. Operating under a California contractor license established in 1981. They hold a A General Engineering Contractor license. They currently maintain an active contractor bond and workers' compensation insurance. No disciplinary actions have been recorded against this license.
License Information
- License Number
- 397082
- Status
- Active
- Classification(s)
- A: General Engineering Contractor
- Tenure
- Licensed since 1981 (45 years)
- Issue Date
- January 06, 1981
- Expiration Date
- January 31, 2027
- Disciplinary Record
- No Disciplinary Actions
Bond & Insurance
- Contractor Bond
- Bonded ($25000) – OHIO CASUALTY INSURANCE COMPANY (THE)
- Workers’ Compensation
- Workers' Compensation Insurance – OLD REPUBLIC GENERAL INSURANCE CORPORATION
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
- 1830 PHILLIPS LANE
- City
- Antioch, CA
- ZIP Code
- 94509
- Phone
- (925) 778-0200
Need a Surety Bond?
California requires every licensed contractor to carry a $25,000 surety bond. Quote and purchase your bond online and print the certificate instantly.
The bond protects consumers if a contractor fails to fulfill contractual obligations or violates CSLB regulations.
Free account required to compare rates from multiple sureties. No obligation to purchase.
Get Started at Colonial Surety →
CSLB-accepted bond provider. Direct partnership.
Need Business Insurance?
Need a quote fast?
Best for solo contractors and small crews. Bind workers’ comp, general liability, or a bundled policy online in minutes with mobile certificates.
Get a General Contractor Insurance Quote →
Via Ergo Next Insurance. No obligation.
Established firm or multi-trade?
Tailored coverage for general contractors, design-build firms, and operations with employees or office staff. Customizable limits and broader appetite for multi-trade work.
Get a Hiscox Construction Insurance Quote →
Via Hiscox Small Business Insurance. No obligation.
About This License Type
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.
Licensing Resources
Workers' comp requirements for California contractors
Deposit and payment rules for California contracts
Home improvement contract requirements
Need a Contractor for Your Project?
Get free quotes from licensed, pre-screened contractors in your area. Compare ratings, reviews, and pricing before you hire.
Starting a Contracting Business in California?
Most California contractors operate as an LLC or sole proprietorship with a DBA. Forming your business entity is a separate step from obtaining your CSLB license.
Verify on Official CSLB Website
License data sourced from the California Contractors State License Board. Last data update: May 31, 2026.