A3 PIPELINE

California contractor license #1091794 · San Francisco, San Francisco County

License

License number
1091794
Status
Clear
Classifications
  • A General Engineering Contractor
Business type
Corporation
Issued
May 20, 2022
Expires
May 31, 2028
Workers' compensation
Leasing Firm, Temp Agency, Etc — A I U 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 Jul 2, 2026. Verify license #1091794 on CSLB's License Check.

California public works

A3 PIPELINE appears on 50 public works projects registered with the California Department of Industrial Relations, 32 of them as the prime contractor, for 21 awarding bodies between 2021 and 2026. Projects it led total $4,192,739 in reported contract value.

Most recent public works projects
DateProjectAwarding bodyRoleContract amount
Jul 29, 2026Collins ES Emergency Gas Line ReplacemenOtherWest Contra Costa Unified School DistrictPrime$39,500
Jul 23, 2026PVHS Water Line RepairWaterWest Contra Costa Unified School DistrictPrime$23,260
Jun 23, 2026John Muir New construction buildBuildings & facilitiesSan Bruno Park School DistrictSubcontractor$1,906,000
Jun 9, 2026Clayton Valley Highlands Sanitary SewerSewer & wastewaterCity of ConcordPrime$440,232
Apr 14, 2026Transportation OfficesDemolition & site workCity of ConcordSubcontractor$3,449,000
Mar 16, 2026TK Expansion Project - Walnut Grove ESParks, landscape & fieldsPleasanton Unified School DistrictSubcontractor$6,232,386
Mar 16, 2026DAVIDSON FIRE LINEOtherSan Rafael City SchoolsPrime$78,475
Mar 12, 2026DLMHS Portable ClassroomsElectrical, low voltage & AVAntioch Unified School DistrictSubcontractor$955,000
Feb 24, 20262025-2026 Sanitary Sewer Point Repair PrSewer & wastewaterCity of BurlingamePrime$66,855
Jan 29, 2026Harbor Dr & West Cliff Dr Sewer ManholeSewer & wastewaterCity of Santa Cruz - Public Works DepartmentPrime$44,715
Jan 29, 2026Cutting/Fairview Storm Drain RepairStorm drain & flood controlCity of El CerritoPrime$74,900
Dec 12, 2025PVHS RESTROOM PLUMBING REPAIRSPlumbing & restroomsWest Contra Costa Unified School DistrictPrime$15,520
Dec 11, 2025Betty R Soskin Backflow ReplacementPlumbing & restroomsWest Contra Costa Unified School DistrictPrime$58,000
Dec 11, 2025Ellerhorst ES Backflow ReplacementPlumbing & restroomsWest Contra Costa Unified School DistrictPrime$52,000
Oct 23, 2025Highland ES Water Line RepairWaterWest Contra Costa Unified School DistrictPrime$21,000
Oct 23, 2025Lincoln ES & Soskin MS Water Line RepairWaterWest Contra Costa Unified School DistrictPrime$46,200
Aug 7, 2025DeJean MS Playground Paving ProjectPaving & streetsWest Contra Costa Unified School DistrictPrime$74,950
Jul 22, 2025Shannon ES Backflow ReplacementPlumbing & restroomsWest Contra Costa Unified School DistrictPrime$54,000
Jul 21, 2025Shannon ES Backflow Replacement ProjectPlumbing & restroomsWest Contra Costa Unified School DistrictPrime$54,000
Jul 21, 20251000004874Plumbing & restroomsWest Contra Costa Unified School DistrictPrime$54,000
Jun 30, 2025Corporation Yard Wash StationSewer & wastewaterCITY OF BERKELEYPrime$89,750
Jun 30, 2025Stewart School Sewer ReplacementSewer & wastewaterWest Contra Costa Unified School DistrictPrime$49,750
Jun 25, 2025DeAnza HS Main Waterline RepairWaterWest Contra Costa Unified School DistrictPrime$17,150
Jun 19, 2025Admin Bldg Plumbing ReplacementPlumbing & restroomsWest Contra Costa Unified School DistrictPrime$48,000
Jun 1, 2025Peres ES Sewer Line RepairSewer & wastewaterWest Contra Costa Unified School DistrictPrime$18,000

Most recent 25 of 50. 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

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