In 1999, Keystone Corporation recognized the need for a first class real estate development in Stanislaus County, California and proceeded to fill that need with the City of Patterson’s first, Class A, professional office and industrial park - Keystone Pacific Business Park.  Located just off Interstate 5 in “Palm-Surrounded” Patterson, Keystone Pacific Business Park is a master-planned business community focused on offering quality and affordable real estate opportunities.

Keystone Pacific Business Park is located one (1.0) miles east of the Interstate 5 corridor and approximately .5 miles north of Sperry Avenue.  The site is 280 miles north of Los Angeles, 105 miles north of Fresno, 92 miles south of Sacramento, 89 miles southeast of San Francisco, 45 miles southeast of Livermore and 20 miles west of Modesto.