D JOHN ROSER INC
California contractor license #506778 · Westlake Village, Ventura County
License
- License number
- 506778
- Status
- Clear
- Classifications
- A General Engineering Contractor
- ASB Asbestos Certification
- B General Building Contractor
- C-8 Concrete Contractor
- C-10 Electrical Contractor
- C-12 Earthwork and Paving Contractor
- C-13 Fencing Contractor
- C-27 Landscaping Contractor
- C-36 Plumbing Contractor
- Business type
- Corporation
- Issued
- Mar 9, 1987
- Expires
- Mar 31, 2027
- Workers' compensation
- Workers' Compensation Insurance — State Compensation Insurance Fund
- Contractor's bond
- $25,000 — American Contractors Indemnity Company
- DIR public works registration
- Registered through Jun 30, 2027
From the California Contractors State License Board (CSLB) public license file, last updated Sep 29, 2025. Verify license #506778 on CSLB's License Check.
California public works
D JOHN ROSER INC appears on 5 public works projects registered with the California Department of Industrial Relations, 5 of them as the prime contractor, for 2 awarding bodies between 2025 and 2026. Projects it led total $6,628,000 in reported contract value.
| Date | Project | Awarding body | Role | Contract amount |
|---|---|---|---|---|
| May 27, 2026 | 2610069 WEBSTER MIDDLE SCHOOLParks, landscape & fields | LOS ANGELES UNIFIED SCHOOL DISTRICT | Prime | $2,835,000 |
| May 20, 2026 | WALNUT PARK MSStorm drain & flood control | LOS ANGELES UNIFIED SCHOOL DISTRICT | Prime | $1,285,000 |
| Jun 18, 2025 | GRATTS EECBuildings & facilities | LOS ANGELES UNIFIED SCHOOL DISTRICT | Prime | $679,000 |
| Jun 18, 2025 | GRATTS EECBuildings & facilities | LOS ANGELES UNIFIED SCHOOL DISTRICT | Prime | $679,000 |
| May 30, 2025 | 2510157 Los Angeles ES Green SchoolyardBuildings & facilities | Los Angeles Unified School District Facilities Construction Contracts | Prime | $1,150,000 |
Most recent 5 of 5. Contract amounts are the whole project's, as the awarding body reported them to DIR (reported since July 2024); a role is "Prime" when the awarding body registered the contractor on the project.
Awarding bodies it works for most
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