WILLIAM PATTERSON DBA SOUTHERN PACIFIC CONSTRUCTION
California contractor license #580492 · Temecula, Riverside County
License
- License number
- 580492
- Status
- Clear
- Classifications
- B General Building Contractor
- Business type
- Sole Owner
- Issued
- Nov 3, 1989
- Expires
- May 31, 2027
- Workers' compensation
- Exempt
- Contractor's bond
- $25,000 — Rli Insurance Company
- DIR public works registration
- Registered through Jun 30, 2027
From the California Contractors State License Board (CSLB) public license file, last updated Apr 15, 2026. Verify license #580492 on CSLB's License Check.
California public works
WILLIAM PATTERSON DBA SOUTHERN PACIFIC CONSTRUCTION appears on 3 public works projects registered with the California Department of Industrial Relations, 2 of them as the prime contractor, for 2 awarding bodies between 2024 and 2025. Projects it led total $340,709 in reported contract value.
| Date | Project | Awarding body | Role | Contract amount |
|---|---|---|---|---|
| Nov 12, 2025 | Traffic Room RenovationTraffic & signals | City of Palm Desert | Prime | $63,768 |
| Oct 20, 2024 | HVAC 100 SuitesRoofing | DAP Health | Subcontractor | $578,635 |
| Oct 10, 2024 | MFA00030Plumbing & restrooms | City of Palm Desert | Prime | $276,941 |
Most recent 3 of 3. 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
- City of Palm Desert · 2 projects
- DAP Health · 1 project
Is this your business?
Claim it on Atriam to add your work photos, service area and a booking link, and to run calls, leads, estimates and invoices in one place — free.
Claim this business