HUD updated a workbook that allows public housing authorities (PHAs) to assess the eligibility of a proposed rehabilitation of a property for a Rental Assistance Demonstration (RAD)/Section 18 construction blend or an opportunity zones (OZ) rent boost. The workbook, which compares proposed rehabilitation costs against housing construction costs (HCC) published by HUD, includes HCC data for 2020, 2021 and 2022. HUD will update the workbook as additional HCC data becomes available.