- Aiken Underground, Inc.
- Alston Construction
- Arnold Industrial Center, LLC
- ASE Construction Management
- Auburn Constructors, LLC
- BCM Construction
- Big D Pacific Builders, LP
- Brookfield Homes / Brookfield Norcal Builders
- Byron Bethany Irrigation District
- Cahill Contractors, Inc.
- Central Contra Costa Sanitation District
- Century Communities
- City of American Canyon
- City of Antioch
- City of Gilroy
- City of Hayward
- City of Livermore
- City of Milpitas
- City of Modesto
- City of Morgan Hill
- City of Novato
- City of Oakley
- City of San Jose
- City of San Mateo
- City of San Ramon
- City of Tracy
- City of Vacaville
- City of Walnut Creek
- City Ventures
- CM&B – Construction Management and Builders, Inc.
- County of Alameda – Flood Control & Services District
- County of Alameda – General Services Building Maintenance Department
- County of Alameda – Public Works Agency
- County of Santa Clara
- D.R. Horton America’s Builder
- De Nova Homes, Inc.
- De Silva Gates Construction
- Diablo Water District
- Diede Construction
- Duran & Venables, Inc.
- East Bay Municipal Utility District (EBMUD)
- Everspring Construction, Inc.
- Fulmer Construction
- Gallagher & Burk, Inc.
- Ghilotti Construction
- Goodfellow Top Grade Const LLC
- Granite Construction
- Granite Rock Co. / Pavex Construction Division
- Hathaway Dinwiddie Const.
- Hensel Phelps Construction Co.
- Interstate Grading & Paving
- Ironhouse Sanitary District
- JJ Albanese, Inc.
- KB Home of Northern California
- KDC Construction
- KDW Construction
- LDK Ventures
- Lennar Homes / Lennar Corporation
- McShane Construction Company
- Millie and Severson
- O.C. Jones & Sons, Inc.
- O’Grady Paving, Inc.
- Oltmans Construction Co.
- Pacific Building, Inc.
- PulteGroup
- Redgwick Construction Co.
- RGW Construction, Inc.
- Robert A. Bothman Construction
- Robson Homes
- Rosendin Electric Inc.
- S. J. Amoroso Construction Co., Inc.
- Shea Homes
- Sierra Bay Contractors
- Signature Homes, Inc.
- SNK Construction
- Solano County Water Agency
- Stacy and Witbeck, Inc.
- Standard Pacific Homes / Cal Atlantic
- Svala Construction, Inc.
- Taylor Morrison
- Toll Brothers Inc.
- Tricorp Group
- TriPointe Homes, Inc.
- Unger Construction
- United Construction Company
- West Side Irrigation District
- Whiting-Turner Contracting Co.
- William Lyon Homes
- Win Structural Consulting Group, Inc.
- Zone 7 Water Agency
