WELTON UNDERGROUND
California contractor license #1047016 · Oakland, Alameda County
License
- License number
- 1047016
- Status
- Clear
- Classifications
- C-34 Pipeline Contractor
- Business type
- Corporation
- Issued
- Nov 19, 2018
- Expires
- Nov 30, 2026
- Workers' compensation
- Workers' Compensation Insurance — Everest Premier Insurance 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 Sep 22, 2026. Verify license #1047016 on CSLB's License Check.
California public works
WELTON UNDERGROUND appears on 8 public works projects registered with the California Department of Industrial Relations, 4 of them as the prime contractor, for 3 awarding bodies between 2023 and 2026. Projects it led total $107,981 in reported contract value.
| Date | Project | Awarding body | Role | Contract amount |
|---|---|---|---|---|
| Sep 3, 2026 | 2200 Fairmont Fire Line RepairsOther | County of Alameda GSA-BMD | Prime | $25,074 |
| Jul 15, 2026 | SRJ HU 9 Main Plumbing RepairsPlumbing & restrooms | County of Alameda GSA-BMD | Prime | $28,821 |
| Jun 5, 2026 | SRJ HU 9 Water Main RepairsWater | County of Alameda GSA-BMD | Prime | $28,821 |
| Dec 9, 2025 | International Swim Center RehabilitationBuildings & facilities | City of Santa Clara 3 | Subcontractor | $24,508,292 |
| Oct 17, 2024 | SRJ Underground Parking Lot Leak RepairOther | County of Alameda GSA-BMD | Prime | $25,265 |
| Mar 26, 2024 | SRJ Water Line Replace Phase 4Water | County of Alameda GSA-BMD JOC | Subcontractor | $1,957,439 |
| Dec 19, 2023 | Upper Campus Storm DraiSewer & wastewater | County of Alameda GSA-BMD JOC | Subcontractor | $2,645,474 |
| Dec 19, 2023 | Lower Campus StormStorm drain & flood control | County of Alameda GSA-BMD JOC | Subcontractor | $6,450,000 |
Most recent 8 of 8. 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 Alameda GSA-BMD · 4 projects
- County of Alameda GSA-BMD JOC · 3 projects
- City of Santa Clara 3 · 1 project
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