D S CASTRO INC DBA HORIZON CONSTRUCTION COMPANY
California contractor license #476952 · Clayton, Contra Costa County
License
- License number
- 476952
- Status
- Clear
- Classifications
- A General Engineering Contractor
- Business type
- Corporation
- Issued
- Jul 22, 1985
- Expires
- Dec 31, 2027
- Workers' compensation
- Workers' Compensation Insurance — State Compensation Insurance Fund
- Contractor's bond
- $25,000 — American Contractors Indemnity Company
- DIR public works registration
- Registration expired Jun 30, 2026
From the California Contractors State License Board (CSLB) public license file, last updated Dec 17, 2025. Verify license #476952 on CSLB's License Check.
California public works
D S CASTRO INC DBA HORIZON CONSTRUCTION COMPANY appears on 11 public works projects registered with the California Department of Industrial Relations, 5 of them as the prime contractor, for 7 awarding bodies between 2004 and 2025. Projects it led total $589,528 in reported contract value.
| Date | Project | Awarding body | Role | Contract amount |
|---|---|---|---|---|
| Mar 27, 2025 | Concrete Replacement Phase 3Concrete & masonry | California State Polytechnic University Pomona | Prime | $30,991 |
| Mar 27, 2025 | SHR EVOC Water IntrusionOther | County of San Bernardino - Project Management Division | Prime | $48,288 |
| Mar 12, 2025 | RGP Narrows Park POT and ADA ImprovementParks, landscape & fields | County of San Bernardino - Project Management Division | Prime | $279,760 |
| Sep 26, 2024 | DBC OFFICE IMPROVEMENT PROJECTHVAC & mechanical | City of Diamond Bar | Prime | $39,245 |
| Aug 23, 2024 | AHC Pasture Irrigation UpgradeParks, landscape & fields | California State Polytechnic University Pomona | Prime | $191,243 |
| Aug 6, 2024 | Concrete ReplacementConcrete & masonry | California State Polytechnic University Pomona | Subcontractor | $92,941 |
| Apr 1, 2024 | Prado Park Food Court RemodelPlumbing & restrooms | County of San Bernardino - Project Management Division | Subcontractor | — |
| Nov 1, 2022 | Galindo TerraceOther | Galindo, L.P. | Subcontractor | — |
| Aug 29, 2022 | MacArthur StudiosOther | Oakland MacArthur Pacific Associates, a California Limited Partnership | Subcontractor | — |
| Mar 12, 2015 | Saddleback College Softball Field Lamp RElectrical, low voltage & AV | South Orange County Community College District | Subcontractor | — |
| Jan 4, 2004 | West Santa Ana Bikeway Phase 2Parks, landscape & fields | City of Paramount | Subcontractor | — |
Most recent 11 of 11. 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
- County of San Bernardino - Project Management Division · 3 projects
- California State Polytechnic University Pomona · 3 projects
- City of Paramount · 1 project
- Galindo, L.P. · 1 project
- South Orange County Community College District · 1 project
- City of Diamond Bar · 1 project
- Oakland MacArthur Pacific Associates, a California Limited Partnership · 1 project
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