Okurasan Hilltown is a notable residential complex completed in 1975, located in Yokohama's Kohoku Ward. Designed by Mouri Architectural Design Office, this housing development represents a significant example of mid-1970s Japanese residential architecture. The project exemplifies the period's approach to large-scale urban housing, integrating multiple residential units within a hillside setting. Its design reflects contemporary principles of efficient space planning and community-focused development. The complex remains an important reference point for understanding Japan's post-war housing evolution and the architectural practices of that era.