ARGONAUT CONSTRUCTORS INC
California contractor license #171432 · Santa Rosa, Sonoma County
License
- License number
- 171432
- Status
- Clear
- Classifications
- A General Engineering Contractor
- B General Building Contractor
- C-32 Parking and Highway Improvement Contractor
- HAZ Hazardous Substance Removal Certification
- Business type
- Corporation
- Issued
- Nov 5, 1957
- Expires
- Dec 31, 2027
- Workers' compensation
- Workers' Compensation Insurance — Zurich American Insurance Company
- Contractor's bond
- $25,000 — Travelers Casualty And Surety Company Of America
- DIR public works registration
- Registered through Jun 30, 2027
From the California Contractors State License Board (CSLB) public license file, last updated Jan 2, 2026. Verify license #171432 on CSLB's License Check.
California public works
ARGONAUT CONSTRUCTORS INC appears on 88 public works projects registered with the California Department of Industrial Relations, 42 of them as the prime contractor, for 41 awarding bodies between 2015 and 2026. Projects it led total $120,169,924 in reported contract value.
| Date | Project | Awarding body | Role | Contract amount |
|---|---|---|---|---|
| Mar 24, 2027 | Calistoga Rd Pvmt Rehab & Utility ImpsPaving & streets | City of Santa Rosa | Prime | $10,592,049 |
| Sep 22, 2026 | Oak Avenue Surface ImprovementsPaving & streets | City of St Helena | Prime | $1,633,349 |
| Jun 23, 2026 | 04-Son-116-22.0/27.9Paving & streets | California Department of Transportation (Caltrans) | Prime | $1,078,159 |
| Jun 2, 2026 | Do not use Miracle Mile -East PRPOther | Marin Municipal Water District | Prime | $1,070,000 |
| Jun 2, 2026 | SVCSD Sewer Trunk Main Replacement Ph 5BSewer & wastewater | Sonoma County Water Agency. | Prime | $1,253,967 |
| May 20, 2026 | 01-Lak-281-15.4/17.0Paving & streets | California Department of Transportation (Caltrans) | Prime | $1,848,179 |
| May 20, 2026 | Old Redwood Hwy Pavement PreservationPaving & streets | Town of Windsor | Prime | $1,860,570 |
| May 19, 2026 | Upper Partrick Road Rehab, RDS 24-37Storm drain & flood control | Napa County Public Works | Prime | $1,488,614 |
| May 19, 2026 | Deer Park Region Paving, RDS 25-02Paving & streets | Napa County Public Works | Prime | $5,573,644 |
| May 15, 2026 | 2026 PPP - Seals and Overlays ProjectStorm drain & flood control | County of Sonoma – SPI _ Sonoma Public Infrastructure | Prime | $5,699,812 |
| Apr 14, 2026 | Petaluma Jr High Courtyard ImprovementsElectrical, low voltage & AV | Petaluma Joint Union High School District | Subcontractor | $2,789,579 |
| Apr 7, 2026 | Lincoln Avenue Traffic Safety & PavingTraffic & signals | City of Napa - Public Works Department | Prime | $4,797,780 |
| Mar 24, 2026 | Galvin Courts RenovationParks, landscape & fields | City of Santa Rosa | Prime | $4,239,255 |
| Mar 23, 2026 | Amarosa Academy Site DevelopmentDemolition & site work | Sonoma County Office of Education | Prime | $2,396,144 |
| Mar 10, 2026 | Youth Crisis Center at Los GuilicosBuildings & facilities | County of Sonoma | Subcontractor | $1,534,182 |
| Feb 26, 2026 | Bolinas Road PRPPaving & streets | Marin Municipal Water District. | Prime | $2,320,855 |
| Feb 24, 2026 | Hopper Ave Corridor Fire Recovery ImpsTraffic & signals | City of Santa Rosa | Prime | $4,054,718 |
| Feb 17, 2026 | March Avenue ReconstructionOther | City of Healdsburg | Prime | $2,427,215 |
| Feb 2, 2026 | Pavement Restoration - Rainier AvenueStorm drain & flood control | City of Petaluma | Subcontractor | $2,884,048 |
| Jan 9, 2026 | Conn Creek Water Line ProjectStorm drain & flood control | City of Calistoga | Prime | $1,743,123 |
| Jan 6, 2026 | EFA - 01A6623Storm drain & flood control | California Department of Transportation | Prime | $900,000 |
| Dec 16, 2025 | FFIP Sleepy Hollow PRPOther | Marin Municipal Water District | Prime | $1,528,132 |
| Dec 9, 2025 | 03-Sac-51,99-VarStorm drain & flood control | California Department of Transportation (Caltrans) | Subcontractor | $12,762,655 |
| Oct 28, 2025 | Oak Ave Utility Rehabilitation ProjectSewer & wastewater | City of St Helena | Prime | $2,833,095 |
| Oct 14, 2025 | 2025 PAVEMENT DIGOUT PROJECTPaving & streets | County of Marin, Dept. of Public Works | Prime | $737,590 |
Most recent 25 of 88. 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
- City of Santa Rosa · 8 projects
- California Department of Transportation (Caltrans) · 6 projects
- Santa Rosa City Schools · 5 projects
- San Rafael City Schools · 4 projects
- County of Sonoma – SPI _ Sonoma Public Infrastructure · 4 projects
- City of Fort Bragg · 4 projects
- Town of Windsor · 3 projects
- City of St Helena · 3 projects
- City of Healdsburg · 3 projects
- City of Calistoga · 3 projects
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