Sub-Associations Within Mountain Park Ranch Sub-Associations Within Mountain Park Ranch Go back to directory. Add to Address Book. Diamond Ridge II Diamond Ridge IICornerstone Properties Contact: Lisa Richmond P.O. Box 62073 Phoenix AZ 85082 work Work Phone: (602) 433-0331 X113work Work Fax: (602) 244-9214workfax Work Email: lisa@cpihoa.comINTERNET Website: cpihoa.com Categories: subassociation Updated 3 months ago.