About Western Builders

General Contractor Santa Rosa

The founding principles of Western Builders as we know it today, dates back to 1945, when Robert Cantu I of Santa Rosa, California founded Western Builders Empire Glass. Western Builders Empire Glass continued to serve Sonoma County and the Santa Rosa community until 1979. Robert Cantu was admired for his honesty and integrity within the construction industry, but more importantly, served as a role model for his grandson, Robert Cantu III, who would grow up to have the same passion for building, community partnership, and industry advocacy.

Decades later, the same core values that inspired the young Robert Cantu III, are evident in his construction business practices today. Working with local builders every spring and summer from the age of fourteen gave Robert a unique perspective about how the construction industry needed to evolve. Robert Cantu founded Western Builders in 2002, keeping in mind all that he had learned from his grandfather, and incorporating a fresh holistic approach for conceptual development to physical implementation.

After years of being industry leaders, Western Builders remains dedicated to community participation, and each individual partnership we create through our work. Every project, concept, and design is a piece of community history, which we are proud to contribute to. The art of our work is truly in the details. By listening carefully to our clients, we are able to conceptualize a design tailored to their needs. Our level of engagement is also unprecedented. We assist our customers through every step of construction and pre-construction services, including building analysis, concept development, and entitlement services. We’re there for our customers post-construction too. What our customers appreciate about us most is that we know how to give them the best value; through honest estimating and efficient scheduling. Each new meeting is treated as an opportunity to create a long lasting partnership. Yes - we are interested in your first project, but we really want your second project or referral. Western Builders is ready to prove to you, your family and friends, and the community why we are the best choice for general contracting in Santa Rosa and the North Bay area.

  • Chair- The Construction Coalition
  • Sonoma County PRMD Advisory Committee
  • North Coast Builders Exchange- 2010/11 President
  • City of Santa Rosa, Mayor's Economic Competitiveness Task Force
  • Sonoma County Economic Development Board-Permit Improvement Task Force
  • American Red Cross- Chair Board of Directors
  • North Bay Business Journal Top 40 under 40 award
  • USGBC Certified Green Builder
  • PADI Scuba diving instructor & medic first aid instructor
  • California State University Fresno (B.S. degree, Construction Management)
  • President- Sigma Lambda Chi- Honors Society for Students in Construction
  • Chapter leader for University Hope- Affiliate of Habitat for Humanity


Philanthropic Support
  • 2010 Sonoma County Spirit Award Recipient
  • 2010 American Red Cross George Escofie Award
  • NCBE Budget & Finance Committee Chair
  • American Heart Association Board of Directors
  • American Heart Association 2010 Heartwalk Chair
  • West County Youth Football and Cheer Board of Directors
  • Anti Drug Program for Santa Rosa Youth Community sponsor
  • Sonoma County Special Olympics sponsor
  • American Cancer Society sponsor


A partial list of our clients includes:

United Airlines Ground Maintenance Facility SFO - UAL Aircraft Maintenance Base- Oakland Int. Airport - UAL United Express Terminal SFO - City of Oakland Administration Building & Plaza - Lake Sonoma Winery - Beaulieu Vineyards - R.B. High Tech Industrial Park - Sonoma State University Student Apartments - Ravenswood Winery - Belvedere Winery - Shurgard Storage-Rohnert Park - Shurgard Storage- Oakley - Waste Management- Carmel Marina, CA - Waste Management- Tucson, AZ - Waste Management, Santa Maria, CA - Storage By George- Napa, CA - Public Storage, Castro Valley, CA - Napa Valley Wine Storage - Chalk Hill Winery - Santa Rosa Plaza - Redwood Credit Union Headquarters - RCU Auto Services - Victoria Secrets - Redwood Credit Union Branch Locations - North Valley Bank - Redwood Health Services - Hilton Garden Inn, Santa Rosa, CA - G&G Supermarket - Windsor School District, Windsor, CA - Hispanic Chamber of Commerce - Star Rehabilitation - Chancery - Office of the Diocese of Santa Rosa - Catholic Charities - Simon Malls - Petaluma Marina Offices - Ridge Vineyards - Sonoma County Audit & Tax Collector Offices - Boy Scout of America Headquarters - Weingarten Realty, Inc. - California State Superior Court System - Fountaingrove Golf & Athletic Club - Sonoma Country Day School Improvements - Redwood Credit Union- San Francisco - Redwood Credit Union- Sebastopol - Tutti Frutti Frozen Yogurt Stores - Lulu & Hill Café - Anova School Administration Offices - Catholic Charities Respite Patio

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Our Executive Team Read more about our team...

Rob Cantu Santa Rosa
Robert Cantu


General Contractor Santa Rosa
Tera Pearce

Office Manager