GROFF PLUMBING LLC
California contractor license #1057639 · Redwood Valley, Mendocino County
License
- License number
- 1057639
- Status
- Clear
- Classifications
- B General Building Contractor
- C-36 Plumbing Contractor
- Business type
- Limited Liability
- Issued
- Aug 30, 2019
- Expires
- Aug 31, 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 Jun 8, 2026. Verify license #1057639 on CSLB's License Check.
California public works
GROFF PLUMBING LLC appears on 7 public works projects registered with the California Department of Industrial Relations, 1 of them as the prime contractor, for 7 awarding bodies between 2023 and 2025. Projects it led total $634,370 in reported contract value.
| Date | Project | Awarding body | Role | Contract amount |
|---|---|---|---|---|
| May 6, 2025 | John Haynes Veterans Memorial BuildingDemolition & site work | County of Humboldt Department of Public Works | Subcontractor | $3,794,937 |
| Mar 24, 2025 | Town Hall Retrofit & Bathroom RemodelBuildings & facilities | City of Fort Bragg | Subcontractor | $793,205 |
| Mar 11, 2025 | Big Lagoon County Park ADA Comp ProjPlumbing & restrooms | County of Humboldt | Subcontractor | $806,590 |
| Feb 10, 2025 | Arcata ES UTK AdditionDemolition & site work | Arcata School District | Subcontractor | $2,009,440 |
| Oct 1, 2024 | Fire Station #3 Renovations ProjectPaving & streets | City of Eureka | Prime | $634,370 |
| May 1, 2023 | Woodmark ApartmentsOther | Sebastopol Pacific Associates, a California Limited Partnership | Subcontractor | — |
| — | Meridian at Petaluma NorthOther | Petaluma Corona Station LP | Subcontractor | $52,047,643 |
Most recent 7 of 7. 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
- Sebastopol Pacific Associates, a California Limited Partnership · 1 project
- City of Fort Bragg · 1 project
- Arcata School District · 1 project
- City of Eureka · 1 project
- County of Humboldt · 1 project
- Petaluma Corona Station LP · 1 project
- County of Humboldt Department of Public Works · 1 project
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