Date,Address,Postcode,Price,Type,Ownership,NewBuild,SaleType 2021-05-17,"1 Mardley Heights, Welwyn",AL6 0TX,810500,Detached,"Freehold",No,Standard 2015-08-12,"5 Mardley Heights, Welwyn",AL6 0TX,670000,Detached,"Freehold",No,Standard 2013-09-27,"13 Mardley Heights, Welwyn",AL6 0TX,458000,Detached,"Freehold",No,Standard 2013-09-06,"6 Mardley Heights, Welwyn",AL6 0TX,480000,Detached,"Freehold",No,Standard 2011-12-15,"3 Mardley Heights, Welwyn",AL6 0TX,467500,Detached,"Freehold",No,Standard 2011-06-30,"4 Mardley Heights, Welwyn",AL6 0TX,470000,Detached,"Freehold",No,Standard 2008-06-05,"1 Mardley Heights, Welwyn",AL6 0TX,580000,Detached,"Freehold",No,Standard 2007-03-16,"7 Mardley Heights, Welwyn",AL6 0TX,575000,Detached,"Freehold",No,Standard 2006-05-12,"6 Mardley Heights, Welwyn",AL6 0TX,445000,Detached,"Freehold",No,Standard 2005-11-04,"9 Mardley Heights, Welwyn",AL6 0TX,200000,Detached,"Freehold",No,Standard 2001-11-07,"2 Mardley Heights, Welwyn",AL6 0TX,369000,Detached,"Freehold",No,Standard 1998-10-01,"6 Mardley Heights, Welwyn",AL6 0TX,225000,Detached,"Freehold",No,Standard 1997-12-19,"9 Mardley Heights, Welwyn",AL6 0TX,290000,Detached,"Freehold",No,Standard 1997-05-23,"6 Mardley Heights, Welwyn",AL6 0TX,173000,Detached,"Freehold",No,Standard 1996-02-09,"7 Mardley Heights, Welwyn",AL6 0TX,191500,Detached,"Freehold",No,Standard