This document describes a summer plan for tree house dwelling units that provide habitat for both human and non-human species in Portland, Oregon. The design reduces the scale of the human habitat as it approaches shared open spaces where humans and nature can interact around a unifying element of water. The tree house units exemplify how human and natural habitats can coexist in the same space and provide enrichment opportunities for both. The project aims to integrate habitats for local species into a mixed-use development within a functioning urban ecosystem.