CASSOP BUILDING & CONSULTANCY LTD Company number 15510058 · Monitor this company Active Overview People 1 Financial Control Charges Documents Analysis Location Related Registered office Address4 Hazel Avenue, Quarrington Hill, Durham, England, DH6 4QS PostcodeDH6 4QS Companies at this postcode 4 Average house price in DH6 4QS £61,000 (2 sales) Map