As part of an urban planning project created in collaboration with the Global Carbon Project and National Institute of Environmental Studies, a series of architectural templates is designed to prove the feasibility of a mass timber future, in which structures would be rebuilt over the course of a 30-year cycle. Centered on the oldest and densest neighborhood in Tokyo, Kojima, the plan was to take a slow process of redeveloping land to be built into ports, in which the land will be kept fallow as park space or built upon for residential or commercial use. Mass timber was chosen as the material of use, due to its renewable attributes and historical use in Japanese architecture. Looking back at the Metabolist movement, a unitized system is developed that can be built-up from small configurations to large high rises depending on the needs of the community over time.