This small beach house, or bach, sits on a sand dune near a fishing village at the mouth of the Taieri River on New Zealand’s South Island. “Bach” is a Kiwi term for a small vacation cottage of simple design and often handbuilt by the owner using inexpensive materials. When designing this modern version for his own family, architect Regan Johnston of Mason & Wales Architects took inspiration from the area’s original fishing huts and baches, giving the structure a straightforward gabled shape that would be quick and economical to build.