Disaster Housing: Improved Cost Data and Guidance Would Aid FEMA Activation Decisions, Report to Congressional Addressees [open pdf - 1MB]
From the Highlights: "The 2017 and 2018 hurricanes (Harvey, Irma, Maria, Florence, and Michael) caused $325 billion in damage. FEMA provided post-disaster assistance, including rental and direct housing assistance. DHAP [Disaster Housing Assistance Program] was a pilot grant program that provided temporary rental assistance and was used to respond to several hurricanes before 2017. GAO [Government Accountability Office] was asked to review issues related to major disasters in 2018 and housing assistance provided after the 2017 and 2018 hurricanes. This report (1) describes the assistance FEMA provided in response to those hurricanes, and (2) evaluates the extent to which FEMA considered cost-effectiveness in activating programs."
Government Accountability Office: https://www.gao.gov/