ARNTZ BUILDERS INC
California contractor license #856393 · Petaluma, Sonoma County
License
- License number
- 856393
- Status
- Clear
- Classifications
- A General Engineering Contractor
- B General Building Contractor
- Business type
- Corporation
- Issued
- Mar 25, 2005
- Expires
- Mar 31, 2027
- Workers' compensation
- Workers' Compensation Insurance — Zurich American Insurance Company Of Illinois
- Contractor's bond
- $25,000 — Great American Insurance Company
- DIR public works registration
- Registered through Jun 30, 2028
From the California Contractors State License Board (CSLB) public license file, last updated Oct 2, 2026. Verify license #856393 on CSLB's License Check.
California public works
ARNTZ BUILDERS INC appears on 49 public works projects registered with the California Department of Industrial Relations, 17 of them as the prime contractor, for 25 awarding bodies between 2018 and 2026. Projects it led total $103,725,474 in reported contract value.
| Date | Project | Awarding body | Role | Contract amount |
|---|---|---|---|---|
| Jun 11, 2026 | Altimira MS Voluntary Seismic Improve 2Other | Sonoma Valley Unified School District | Prime | $3,734,791 |
| Jun 11, 2026 | High School Weight RoomsBuildings & facilities | Napa Valley Unified School District | Prime | $4,360,165 |
| Jun 4, 2026 | Spring Lake M S Modernization ProjectBuildings & facilities | Rincon Valley Union School District | Prime | $8,378,416 |
| Jun 3, 2026 | Sequoia ES Modernization ProjectBuildings & facilities | Rincon Valley Union School District | Prime | $4,110,137 |
| Jun 3, 2026 | Austin Creek ES Modernization ProjectBuildings & facilities | Rincon Valley Union School District | Prime | $6,589,715 |
| Nov 18, 2025 | Lorenzo Manor E.S. New K BuildingBuildings & facilities | San Lorenzo Unified School District 2 | Prime | $12,076,541 |
| Oct 24, 2025 | Redwood MS Campus ModBuildings & facilities | Napa Valley Unified School District | Prime | $1,290,005 |
| Oct 23, 2025 | 2 Site Campus ModBridges & structures | Napa Valley Unified School District | Prime | $10,000 |
| Sep 2, 2025 | Pickleweed Library RenovationBuildings & facilities | City of San Rafael | Prime | $1,984,974 |
| Aug 25, 2025 | Station 10 rebuildOther | Tiburon Fire Protection District | Subcontractor | $6,300,000 |
| Aug 21, 2025 | Reclamation Pump Station E Bldg ReplaceWater | City of Santa Rosa | Prime | $1,033,261 |
| Jul 10, 2025 | Construction Trades Ctr Acoustic PanelsHVAC & mechanical | Sonoma County Junior College District dba Santa Rosa Junior College | Prime | $179,979 |
| Jul 7, 2025 | Fire Station No.1 & Fire Station No.2Paving & streets | City of Petaluma | Prime | $2,558,425 |
| Jun 25, 2025 | DO & Ed CenterDemolition & site work | Santa Rosa City Schools | Prime | $56,492,351 |
| Jun 11, 2025 | James Monroe Elementary School TK ClassrDemolition & site work | Santa Rosa City Schools | Subcontractor | $12,474,436 |
| Jun 10, 2025 | Donals Rheem - Portable Site WorkDemolition & site work | Moraga School District | Prime | $212,316 |
| May 8, 2025 | Altimira MS Seismic Improvements Phase 1Buildings & facilities | Sonoma Valley Unified School District | Prime | $615,964 |
| Apr 3, 2025 | Warehouse and Station RemodelBuildings & facilities | Gold Ridge Fire Protection District | Subcontractor | $6,200,000 |
| Mar 13, 2025 | MWE PreschoolBuildings & facilities | Windsor Unified School District | Subcontractor | $9,220,954 |
| Dec 18, 2024 | Moderization of 3 Schools, Increment IIBuildings & facilities | MT. DIABLO UNIFIED SCHOOL DISTRICT PURCHASING | Subcontractor | $19,656,345 |
| Dec 17, 2024 | Applied Technology Center ModernizationBuildings & facilities | Sierra Joint Community College District | Subcontractor | $33,000,000 |
| Dec 12, 2024 | COES/ACMS Campus ModBuildings & facilities | Napa Valley Unified School District | Subcontractor | $5,425,146 |
| Aug 7, 2024 | Petaluma ModerizationBuildings & facilities | Sonoma County Library | Subcontractor | $3,019,844 |
| Jul 8, 2024 | Coyote Valley ES Exterior Paint & RepairPainting & flooring | Middletown Unified School District | Prime | $60,000 |
| Jun 27, 2024 | MWE,WHS,DO New LayoutOther | Windsor Unified School District | Subcontractor | $63,486 |
Most recent 25 of 49. 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
- Napa Valley Unified School District · 9 projects
- Santa Rosa City Schools · 5 projects
- Windsor Unified School District · 5 projects
- Rincon Valley Union School District · 4 projects
- Middletown Unified School District · 3 projects
- Sonoma Valley Unified School District · 2 projects
- City of Petaluma · 2 projects
- Judicial Council of California - (PUB WORKS) · 2 projects
- Sierra Joint Community College District · 1 project
- Sonoma County Library · 1 project
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