Housing insecurity and the impacts of climate change are two interrelated issues increasingly affecting cities across the United States. This report provides an overview of how community land trusts (CLTs) can present a solution to help cities mitigate both of these challenges by promoting community ownership and decisionmaking and providing permanently affordable and resilient housing. CLTs are nonprofit organizations with community-led governing structures that hold land in trust for the benefit of the community, often providing and preserving affordable housing, stewarding community amenities like parks and greenspace, and providing low-cost commercial properties that can support small businesses and economic resilience. CLTs can also play an important role in managed retreat strategies by helping to plan and design affordable “receiving” areas and helping communities at high risk of flooding to relocate together to these higher-ground areas. Building on examples from state and local policies in the U.S. and Europe, the report provides detailed policy recommendations for how local and state governments can enable the scaling up of CLT approaches and thereby promote housing affordability and resilience.