Conco’s Founder, Matt Gonsalves

The Conco Companies were founded in 1959 by Matt Gonsalves, Gerald Santucci, Ray Santucci, Will Gonsalves, and Mel Gonsalves.  Matt Gonsalves has held the position of President and is still active in the company serving as the Chairman of the Board.

The business got its start by pouring patios and driveways in Contra Costa and Alameda Counties.  Today Conco is one of the largest commercial concrete construction companies in the Western U.S. operating in California, Oregon, Washington, Nevada, and Colorado. 

The highlights of Conco’s longevity in the industry include providing premium concrete services for many of the most distinguished projects on the West Coast throughout the decades.  Some of the more prominent projects include the Pacific Bell Park, San Francisco Giants Stadium, the retrofit of Los Angles City Hall, Nokia Theater L.A. LIVE and Parking Structure, UCSF Neurosciences Lab and Research Center, Seattle Seahawk Parking Garage, Millbrae and Concord/Martinez BART Stations, and the Marriott Hotel in San Francisco. Recently we have been involved in the San Francisco 49ers Levi’s Stadium, the Bay Bridge Repair, the Wilshire Grand in L.A., and currently the Salesforce Tower in S.F.

As an innovator and inventor, Matt Gonsalves is credited with pioneering the use of 10” to 12” MAT slabs to create slab foundations that are not as prone to cracking or bending with earth movements.  He also invented the Waffle-Mat System, which is the process of pouring concrete over plastic molds to create a waffle-type mat effective on expansive soils. 

He also initiated the formation of the Concrete Contractors Association and has served as the President of the Building Industry of America (BIA).  Furthermore Mr. Gonsalves assisted the California Contractors State Licensing Board in developing test questions for its contractor license exam and working with political representatives to make changes to the cash retention policies in the construction industry.  Many of his ideas on various concrete methodologies have become today’s standards and practices.  In 2000, he was inducted into the CBIF Hall of Fame.   

Conco’s mission is to be the best supplier of concrete services in the Western U.S. and to bring experience, expertise and quality to each project. We continue to upgrade and expand facilities to better serve the growing market for a wide range of construction development.