Tamagawa Two-Family Residence is a residential and mixed-use structure completed in 2006 in Ota Ward, Tokyo. Designed by Manabu Naya and Shin Naya of Naya Architectural Design Office, this innovative project seamlessly integrates living spaces with factory, workshop, and storage facilities. The building exemplifies contemporary residential design that responds to urban density while accommodating diverse functional requirements. Its thoughtful architectural approach demonstrates how multi-generational housing can coexist with commercial production spaces, making it a compelling case study for architects exploring flexible, adaptive design solutions in metropolitan environments.