Exterior, Wood Siding Material, Stone Siding Material, and House Building Type To integrate the former postman’s cottage with the new design, architect David Sheppard added a concrete column adjacent to an existing stone chimney and a new slate chimney “at the heart of the composition.” From this, the roof structure fans out; the small structure now serves as an anteroom.  Photo 13 of 19 in 10 Dwell-Approved, New-Old Homes in the UK