Monzen District Plan

Marine Corps Air Station (MCAS) Iwakuni plans to redevelop the Monzen District from World War II-era, concrete housing blocks into a more inviting and accessible neighborhood with modern housing, public grounds, and a mixed-use town center connected by safe streets and pedestrian pathways. With this vision in mind, the installation sought LEED for Neighborhood Development (ND) certification to present the District as a positive precedent for federal planning, creating a sustainable community environment for families and service members. The U.S. Green Building Council (USGBC) certified the Monzen District Plan as a LEED ND Certified Plan, the first ever for the Marine Corps and the first LEED ND certified plan under LEED Version 4 for the Department of Defense.

The Monzen District plan recommends a complete, phased, redevelopment of the district that reorients the street grid around a central quad to promote connected, safe, accessible streets, and introduces mixed-use housing facilities to provide community amenities closer to where the marines and sailors live.


Marine Corps Air Station (MCAS) Iwakuni


USACE Regional Planning and Environmental Center (RPEC)




LEED ND Certified Plan

Monzen District LEED for Neighborhood Development Certified Plan. American Planning Association Federal Planning Division. Outstanding Environmental Planning. Merit Award, 2021