SJD PROPERTIES (HERTS) LIMITED Company number 17105339 · Monitor this company Active Overview People 1 Control Documents Analysis Location Related Registered office AddressSt Christophers House, 126 Ridge Road, Letchworth Garden City, England, SG6 1PT PostcodeSG6 1PT Companies at this postcode 275 Average house price in SG6 1PT £444,000 (21 sales) Map