In 1975, EAH Housing and Interfaith Housing Foundation (IHF) joined forces to build Shelter Hill, a 75‐unit family development made possible by the city of Mill Valley’s new inclusionary zoning ordinance. This case study highlights the critical stewardship role that one large nonprofit housing organization took on to help a smaller one at Shelter Hill and is just one example of how mission-driven partnerships can lead to long-term preservation.