The main purpose of the UNLOCK Housing Act is to make it easier to build new homes, particularly for low- and moderate-income individuals and families. This legislation aims to address housing shortages and improve access to affordable housing options in various communities across the United States. Key provisions of the Act include amendments to the Housing and Community Development Act of 1974. Specifically, it adds a new requirement that allows metropolitan cities, urban counties, states, and other local governments that receive federal funding to construct new residential housing.