Contact us using the information below to learn more about how you can benefit from our services. Generally someone is in the office Tuesday's and Thursday's from 7am to 6pm Pacific Standard Time. Monday, Wednesday and Friday are in the field checking on current projects. We can always be reached by cell phone at any time. Main Contact: Nathan York 3071 Waukegan Ave. Simi Valley, CA 93063 United States Phone Number: 805-520-1605 Fax Number: 805-582-0698 nyork@yorkconst.com