- StevenWalker Communities
- Friedman Homes
- Stratham Group
- Stater Brothers
- Beck Properties
- Santa Anita development
- Pulte Homes Corporation
- Shea Homes
- West Venture Development
- Marlborough Development
- Regional properties
- Empire Homes
- Griffin Homes
- MBK Homes
- Creative Communities
- Trammel Crow, Inc.
- Costain Homes
- Fiesta Homes
- John Laing Homes
- Western Pacific Housing
- Cabot, Cabot, and Forbs
- Disneyland
- Calwest Builders
- A-1 Builders
- Calvada Environmental
- World Oil
- General Physics
- Applied Medical
- Rick Hamm Construction
- Cider Landmark
- Germania
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- NEC Group
- RAMCAM
- Dynamic Investments
- Cliffstar Corporation
- TR Design Group
- Broeske Architecture
- Vesely Architecture
- Community Works Design Group
- The Reynolds Group
- AVAR
- IW Consulting Engineers
- KISCO Senior Living
- Andresen Architecture
- The Retaining Wall Company
- CalState First Builder
- RC Hobbs Company
- Hurtado Consulting
- CWS Systems
- Western Municipal Water District
- Eastern Municipal Water District
- Jurupa Community Services District
- Moreno Valley School District
- Riverside Public Utilities
- City of Corona
- City of Riverside
- City of Ontario
- City of Chino
- City of Lake Forest
- California Department of Transportation
- California Highway Patrol
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