Fresno Facility MAP We are Central Piers Inc. Our 58, 000 square foot facility is located in Fresno California, the "Heart of the San Joaquin Valley". Since May of 1973, we have lead the industry in design and manufacturing of Permanent Foundation and Engineered Tiedown Systems for Mobile Homes and Modular Buildings. We now have many mobile home replacement parts and supplies. Please browse this site and contact us if you have any questions about our company. Dealers welcome. Central Piers Inc is a member of the Better Business Bureauand the Fresno Chamber of Commerce.