Date,Address,Postcode,Price,Type,Ownership,NewBuild,SaleType 2021-11-11,"Part Basement To Second Floors, Northumberland House, 8 Northumberland Avenue, London",WC2N 5BY,297945,Flat,"Leasehold",No,Non-standard 2014-07-16,"4 - 5 Northumberland Avenue, London",WC2N 5BY,150000,Other,"Leasehold",No,Non-standard