CAL BUILDING SYSTEMS INC
California contractor license #521087 · Yorba Linda, Orange County
License
- License number
- 521087
- Status
- Clear
- Classifications
- C-7 Low Voltage Systems Contractor
- C-10 Electrical Contractor
- C-16 Fire Protection Contractor
- Business type
- Corporation
- Issued
- Nov 19, 1987
- Expires
- Nov 30, 2027
- Workers' compensation
- Workers' Compensation Insurance — National Casualty Company
- 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 Aug 3, 2026. Verify license #521087 on CSLB's License Check.
California public works
CAL BUILDING SYSTEMS INC appears on 9 public works projects registered with the California Department of Industrial Relations, 7 of them as the prime contractor, for 7 awarding bodies between 2024 and 2026. Projects it led total $1,126,403 in reported contract value.
| Date | Project | Awarding body | Role | Contract amount |
|---|---|---|---|---|
| Jul 1, 2026 | CAL BUILDING SYSTEMS INC.- B0009739Fire & life safety | Jurupa Unified School District | Prime | $5,000 |
| Oct 1, 2025 | W68A00076Design, inspection & consulting | Capistrano Unified School District | Prime | $109,745 |
| Aug 21, 2025 | B0009247-CAL BUILDING SYSTEMS INC.Fire & life safety | Jurupa Unified School District | Prime | $15,000 |
| Aug 19, 2025 | 25/26 maintenance for fire systemsOther | San Marcos Unified School District | Prime | $20,000 |
| Aug 5, 2025 | 25/26 Sprinkler and Hydrant InspectionsDesign, inspection & consulting | San Marcos Unified School District | Prime | $46,658 |
| Jan 1, 2025 | Cal Building-Open PO 25-16-inspct/repairFire & life safety | Corona-Norco Unified School District | Prime | $50,000 |
| Nov 10, 2024 | JOB ORDER CONTRACT 2210BV Amendment 2Buildings & facilities | County of Los Angeles Department of Public Works | Subcontractor | $3,750,000 |
| Sep 9, 2024 | D&C24-011 Ontario Motor Inn RenovationHVAC & mechanical | City of Ontario | Subcontractor | $4,098,000 |
| — | ON-CALL FIRE ALARM & SPRINKLER SYSTEMSFire & life safety | City of Santa Ana | Prime | $880,000 |
Most recent 9 of 9. 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
- Jurupa Unified School District · 2 projects
- San Marcos Unified School District · 2 projects
- County of Los Angeles Department of Public Works · 1 project
- City of Ontario · 1 project
- Corona-Norco Unified School District · 1 project
- Capistrano Unified School District · 1 project
- City of Santa Ana · 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