Exterior, House Building Type, and Metal Siding Material Seeking a private escape from busy Auckland life, Milton Henry and Mark Summerville purchased an “unbuildable” lot on Waiheke Island and then rehabbed it over 15 years.A clearing in the bush dictated the footprint,resulting in two stacked volumes that form a tower-like structure over four split levels. It took a customized trailer to bring materials to the steep site.  Photo 2 of 13 in A Tiny Footprint Isn’t So Bad When You Live in a Tower