WELCO UNDERGROUND CONSTRUCTION INC
California contractor license #959913 · North Highlands, Sacramento County
License
- License number
- 959913
- Status
- Clear
- Classifications
- A General Engineering Contractor
- C-57 Well Drilling Contractor
- Business type
- Corporation
- Issued
- Apr 13, 2011
- Expires
- Apr 30, 2027
- Workers' compensation
- Workers' Compensation Insurance — Insurance Company Of The West
- Contractor's bond
- $25,000 — American Contractors Indemnity Company
- DIR public works registration
- Registered through Jun 30, 2028
From the California Contractors State License Board (CSLB) public license file, last updated Sep 22, 2026. Verify license #959913 on CSLB's License Check.
California public works
WELCO UNDERGROUND CONSTRUCTION INC appears on 113 public works projects registered with the California Department of Industrial Relations, 1 of them as the prime contractor, for 74 awarding bodies between 2016 and 2026. Projects it led total $74,999 in reported contract value.
| Date | Project | Awarding body | Role | Contract amount |
|---|---|---|---|---|
| Dec 10, 2026 | BR and NU Modernization ProjectBuildings & facilities | Nevada Joint Union High School District | Subcontractor | $8,374,058 |
| Aug 12, 2026 | 2026 MDUSD CENTRAL SERVICES TECHNOLOGY IElectrical, low voltage & AV | MT. DIABLO UNIFIED SCHOOL DISTRICT PURCHASING | Subcontractor | $2,188,266 |
| Aug 8, 2026 | Transportation phase 4 EV Bus chargersSolar, EV & energy | Rocklin Unified School District | Subcontractor | $69,997 |
| Jun 30, 2026 | Colonial Heights & Lincoln Village 1BWater | San Joaquin County Public Works | Subcontractor | $3,788,000 |
| Jun 23, 2026 | FAC-ScoreboardTHSParks, landscape & fields | Tracy Unified School District | Subcontractor | $355,790 |
| May 5, 2026 | Jessie Baker School Mod P2Buildings & facilities | Elk Grove Unified School District | Subcontractor | $12,561,021 |
| Mar 16, 2026 | TK Expansion Project - Walnut Grove ESParks, landscape & fields | Pleasanton Unified School District | Subcontractor | $6,232,386 |
| Mar 12, 2026 | DLMHS Portable ClassroomsElectrical, low voltage & AV | Antioch Unified School District | Subcontractor | $955,000 |
| Mar 11, 2026 | HHS Turf ReplacementParks, landscape & fields | Twin Rivers Unified School District (eff. January 1, 2024) | Subcontractor | $1,553,075 |
| Mar 3, 2026 | Boring and Underground ConstructionOther | City of Roseville - Wastewater Division | Prime | $74,999 |
| Mar 3, 2026 | HSIP 10 Ped Crossing ImprovementsOther | City of Sacramento Public Works | Subcontractor | $347,964 |
| Feb 10, 2026 | Installation of EV Charging stationsSolar, EV & energy | Modesto Irrigation District | Subcontractor | $154,685 |
| Feb 9, 2026 | Mossdale / Valverde Parks RenovationParks, landscape & fields | City of Lathrop | Subcontractor | $3,066,124 |
| Nov 25, 2025 | Electrical Underground InfrastructureElectrical, low voltage & AV | Antioch Unified School District | Subcontractor | $115,000 |
| Oct 27, 2025 | Donner Field Senior ApartmentsParks, landscape & fields | Donner Field Senior, L.P | Subcontractor | $23,382,785 |
| Oct 7, 2025 | HHS Canopy Repair & FA ReplacementPaving & streets | Twin Rivers Unified School District (eff. January 1, 2024) | Subcontractor | $12,342,950 |
| Sep 23, 2025 | 10 Douglas Dr Parking Lot Repairs & ADAOther | Contra Costa County Public Works Department | Subcontractor | $586,962 |
| Sep 16, 2025 | Sayonara Dr - Lialana to MingWater | Citrus Heights Water District | Subcontractor | $346,768 |
| Aug 6, 2025 | Zero Emission Bus Depot Phase II & IIIOther | City of Roseville - Facility Services | Subcontractor | $1,401,992 |
| Aug 5, 2025 | AC OVERLAY 2025 PHASE BPaving & streets | County of Sacramento | Subcontractor | $11,467,617 |
| Jul 30, 2025 | CSM B30 Modular Site Work ProjectDemolition & site work | San Mateo County Community College District | Subcontractor | $1,296,266 |
| Jul 24, 2025 | Bore and Install ConduitOther | Modesto Irrigation District | Subcontractor | $98,720 |
| Jul 22, 2025 | Charles Mack ES, Front Landscape ImproveParks, landscape & fields | Elk Grove Unified School District | Subcontractor | $489,960 |
| Jul 14, 2025 | SMF MTLOther | County of Sacramento | Subcontractor | $4,760,959 |
| Jul 8, 2025 | Classroom and Office Building 3Buildings & facilities | University of California Merced | Subcontractor | $61,000,000 |
Most recent 25 of 113. 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
- Twin Rivers Unified School District (eff. January 1, 2024) · 7 projects
- County of Sacramento · 6 projects
- Elk Grove Unified School District · 4 projects
- Contra Costa County Public Works Department · 4 projects
- San Juan Unified School District · 4 projects
- Sacramento City Unified School District · 3 projects
- City of Sacramento Department of General Services · 3 projects
- University of California, Davis, Design and Construction Management · 3 projects
- Dept. of General Services, Real Estate Services Division, Project Management and · 3 projects
- Department of General Services · 3 projects
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