RON DIETZ INC DBA DIETZ HYDROSEEDING CO
California contractor license #493207 · Sylmar, Los Angeles County
License
- License number
- 493207
- Status
- Clear
- Classifications
- C-27 Landscaping Contractor
- Business type
- Corporation
- Issued
- Jun 11, 1986
- Expires
- Jun 30, 2028
- Workers' compensation
- Workers' Compensation Insurance — Omaha National Casualty 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 May 12, 2026. Verify license #493207 on CSLB's License Check.
California public works
RON DIETZ INC DBA DIETZ HYDROSEEDING CO appears on 23 public works projects registered with the California Department of Industrial Relations, 1 of them as the prime contractor, for 19 awarding bodies between 2016 and 2026. Projects it led total $236,769 in reported contract value.
| Date | Project | Awarding body | Role | Contract amount |
|---|---|---|---|---|
| Apr 10, 2026 | GHS Field renovationParks, landscape & fields | Glendora Unified School District | Subcontractor | $66,202 |
| Apr 7, 2026 | Lillie King Park Basketball Court ConstParks, landscape & fields | City of Santa Ana | Subcontractor | $167,900 |
| Mar 2, 2026 | Santa Anita Dam Rd Post FiresBridges & structures | County of Los Angeles Department of Public Works | Subcontractor | $3,140,375 |
| Mar 1, 2026 | Las Flores Creek Park RestorationParks, landscape & fields | City of Malibu | Subcontractor | $1,000,000 |
| Jan 13, 2026 | E31-25 - Balboa Field RenovationParks, landscape & fields | Ventura Unified School District | Prime | $236,769 |
| Oct 21, 2025 | Del Sol Park Improvements Phase 1 - NewPlumbing & restrooms | City of Oxnard | Subcontractor | $290,915 |
| Oct 20, 2025 | Aquatic Center Improvements Phase 1BStorm drain & flood control | City of Santa Fe Springs | Subcontractor | $12,740,500 |
| Jun 10, 2025 | E23-25 EP Foster Playfield RenovationBuildings & facilities | Ventura Unified School District | Subcontractor | $219,969 |
| Jan 27, 2025 | Big Rock Drainage Infrastructure RepairsStorm drain & flood control | City of Malibu | Subcontractor | $2,000,000 |
| Dec 18, 2024 | Parking lot expansionBuildings & facilities | Azusa Unified School District | Subcontractor | $5,990,525 |
| Dec 10, 2024 | The Rink Sports Pavilion ConstructionOther | City of Santa Clarita | Subcontractor | $21,553,000 |
| Nov 18, 2024 | City Parks Irrigation System AssessmentFire & life safety | City of Lawndale, Public Works Department | Subcontractor | $797,717 |
| Nov 7, 2024 | Bloomington HS Field ImprovParks, landscape & fields | Colton Joint Unified School District | Subcontractor | $2,818,664 |
| Oct 18, 2024 | Anteater Stadium Landscape and HardscapePaving & streets | UC Irvine | Subcontractor | $1,914,792 |
| Oct 9, 2024 | Bid 686 Ventura College Global - VCParks, landscape & fields | Ventura County Community College District | Subcontractor | $369,000 |
| Jul 9, 2024 | P4033 River of Lights, Central ParkParks, landscape & fields | City of Santa Clarita | Subcontractor | $1,397,200 |
| Jul 3, 2024 | Cross St. Bridge ReplacementBridges & structures | CITY OF SAN BERNARDINO | Subcontractor | $2,945,504 |
| Jun 20, 2024 | Well 205 Perchlorate Groundwater TreatmeWater | Santa Clarita Valley Water Agency | Subcontractor | $22,196,000 |
| Feb 12, 2024 | Bubbling Springs Park Renewal ProjectParks, landscape & fields | City of Port Hueneme 1 | Subcontractor | — |
| Dec 17, 2023 | HVAC Upgrade and Modernization at SchmitHVAC & mechanical | Westminster School District | Subcontractor | — |
| Dec 16, 2023 | HVAC Upgrades and Modernization at WebbeHVAC & mechanical | Westminster School District | Subcontractor | — |
| Nov 5, 2023 | Cypress HS Track & FieldParks, landscape & fields | Anaheim Union High School District | Subcontractor | — |
| Apr 11, 2016 | Magnolia ESFire & life safety | Los Angeles Unified School District Facilities Construction Contracts | Subcontractor | — |
Most recent 23 of 23. 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 Malibu · 2 projects
- City of Santa Clarita · 2 projects
- Ventura Unified School District · 2 projects
- Westminster School District · 2 projects
- County of Los Angeles Department of Public Works · 1 project
- Los Angeles Unified School District Facilities Construction Contracts · 1 project
- Santa Clarita Valley Water Agency · 1 project
- Azusa Unified School District · 1 project
- City of Santa Ana · 1 project
- UC Irvine · 1 project
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