According to our records, this business is located at 722 Yorklyn Rd # 350 in Hockessin (in New Castle County), Delaware 19707, the location GPS coordinates are: 39.7896963 (latitude), -75.6901706 (longitude). Delaware Valley Development Co is categorized under Real Estate Developers (SIC code 6552). Known organization owner is George Beer. Current estimates show that the unit has a sales volume of $1,347,000 and staff of approximately 3 people. You can contact the company by phone at (302) 235-2500.