? The top leader and owner of GRP Contractors, Inc., Roberto Gonzalez, has worked in the underground construction field for over 20 years and has gained the experience necessary to fuel the company causing it to thrive. Through his hard work and dedication, he has consistently built client relations that allows the company to stay on demand in this competitive industry. GRP Contractors, Inc. started undersized pertaining of only five employees which is why we are now proud to be able to keep this company growing and aiding in providing jobs in the state of California. GRP was founded in 2014 by Roberto and his family’s hard work which allowed this Family Owned Company to push through to becoming the company that it is today.