AHLBORN STRUCTURAL STEEL INC
California contractor license #854244 · Santa Rosa, Sonoma County
License
- License number
- 854244
- Status
- Clear
- Classifications
- C-13 Fencing Contractor
- C-23 Ornamental Metal Contractor
- C-51 Structural Steel Contractor
- Business type
- Corporation
- Issued
- Feb 8, 2005
- Expires
- Feb 28, 2027
- Workers' compensation
- Workers' Compensation Insurance — New Hampshire Insurance Company
- Contractor's bond
- $25,000 — Ohio Casualty Insurance Company (The)
- DIR public works registration
- Registered through Jun 30, 2027
From the California Contractors State License Board (CSLB) public license file, last updated Aug 25, 2026. Verify license #854244 on CSLB's License Check.
California public works
AHLBORN STRUCTURAL STEEL INC appears on 134 public works projects registered with the California Department of Industrial Relations, 1 of them as the prime contractor, for 91 awarding bodies between 2000 and 2026. Projects it led total $18,475 in reported contract value.
| Date | Project | Awarding body | Role | Contract amount |
|---|---|---|---|---|
| Jul 16, 2026 | CASTLE ROCK SPBridges & structures | DEPARTMENT OF PARKS AND RECREATION-PARK OPERATIONS | Subcontractor | $1,290,000 |
| Jun 23, 2026 | David W. Gordon ES, Phase 3, Inc2&3Elevators & conveying | Elk Grove Unified School District | Subcontractor | $75,586,388 |
| Jun 15, 2026 | Leitz Modular Classroom ProjectBuildings & facilities | Union School District | Subcontractor | $3,222,870 |
| Jun 1, 2026 | AHS and CHS Kitchen UpgradeBuildings & facilities | San Mateo Union High School District | Subcontractor | $1,828,028 |
| May 13, 2026 | Portables Replacement Projects Ph 1 & 2Buildings & facilities | Vallejo City Unified School District | Subcontractor | $3,674,796 |
| May 10, 2026 | SAP Center - Phase 1Paving & streets | City of San Jose | Subcontractor | $12,869,025 |
| Apr 20, 2026 | Martone Elementary Wellness CenterDemolition & site work | Modesto City Schools | Subcontractor | $1,711,228 |
| Apr 20, 2026 | MCFD Admin HeadquartersOther | Sare-Regis Management Co., LP | Subcontractor | $5,069,000 |
| Apr 14, 2026 | Petaluma Jr High Courtyard ImprovementsElectrical, low voltage & AV | Petaluma Joint Union High School District | Subcontractor | $2,789,579 |
| Mar 3, 2026 | Tolay GA Phase 2- Shade StructureConcrete & masonry | County of Sonoma - Regional Parks | Subcontractor | $986,206 |
| Feb 18, 2026 | 967 Mission New ConstructionOther | Mayor''s Office of Housing and Community Development | Subcontractor | $56,417,159 |
| Feb 3, 2026 | CA INDIAN HERITAGE CENTER SPBuildings & facilities | DEPARTMENT OF PARKS AND RECREATION-PARK OPERATIONS | Subcontractor | $4,780,000 |
| Feb 2, 2026 | Carlton Modular Classroom ProjectBuildings & facilities | Union School District | Subcontractor | $3,222,870 |
| Jan 22, 2026 | Library/5th Grade Wing/RISEBuildings & facilities | Planada Elementary School District | Subcontractor | $6,800,000 |
| Jan 15, 2026 | Sonoma Mount E.C.S. Music/Classroom-Ph 2Demolition & site work | Old Adobe Union School District | Subcontractor | $4,748,309 |
| Dec 22, 2025 | Hand Rail and PlumbingPlumbing & restrooms | Sonoma County Junior College District | Subcontractor | $80,340 |
| Dec 15, 2025 | Lodi Middle AdditionsBuildings & facilities | Lodi Unified School District | Subcontractor | $20,145,886 |
| Dec 9, 2025 | Wilfred Booster Station ResiliencyWater | Sonoma County Water Agency. | Subcontractor | $6,809,340 |
| Oct 24, 2025 | NHS and VHS Campus ModBuildings & facilities | Napa Valley Unified School District | Subcontractor | $12,000 |
| Oct 23, 2025 | 2 Site Campus ModBridges & structures | Napa Valley Unified School District | Subcontractor | $10,000 |
| Oct 1, 2025 | Balboa Reservoir Street Improvement ProjWater | Mayor''s Office of Housing and Community Development | Subcontractor | $35,500,000 |
| Aug 18, 2025 | Gateway Park Pedestrian BridgeBridges & structures | City of San Mateo | Subcontractor | $478,113 |
| Aug 18, 2025 | Downey Athletic Complex BuildingBuildings & facilities | Modesto City Schools | Subcontractor | $8,200,000 |
| Jul 22, 2025 | Mt. Veeder Road MPM 3.5, RDS 25-18Traffic & signals | Napa County Public Works | Subcontractor | $1,616,616 |
| Jun 24, 2025 | Job Order ContractingBuildings & facilities | County of El Dorado | Subcontractor | $2,500,000 |
Most recent 25 of 134. 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
- Modesto City Schools · 7 projects
- San Rafael City Schools · 6 projects
- Napa Valley Unified School District · 5 projects
- San Mateo Union High School District · 3 projects
- Alisal Union School District · 3 projects
- Petaluma Joint Union High School District · 3 projects
- Santa Rosa City Schools · 3 projects
- Vallejo City Unified School District · 3 projects
- Union School District · 3 projects
- El Dorado County Facilities · 2 projects
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