Date,Address,Postcode,Price,Type,Ownership,NewBuild,SaleType 2012-08-06,"2 Green Cottages, Park Lane, Old Knebworth",SG3 6QA,525000,Semi-detached,"Freehold",No,Standard 1997-01-31,"2 Green Cottages, Park Lane, Old Knebworth",SG3 6QA,110000,Semi-detached,"Freehold",No,Standard