Inside, Storey chose to leave materials unfinished and as natural as possible — matte ceramic bathroom tiles, exposed concrete structural pillars and walls, and white-oak doors and floors. The latter were treated with WOCA, a VOC-free Danish floor oil.

“I left the concrete exposed to add texture — it’s a nice touch, because it’s something you’d normally see in much more high-spec houses,” says Storey.  Photo 4 of 9 in Twin Houses on Tiny Lots Stretch Outward for Space