Source: U.S. Census Bureau
Release: Housing Vacancies and Homeownership
Included in this category are year-round units which were vacant for reasons other than for occasional use, and units Occupied by persons with usual residence elsewhere. For example, held for settlement of an estate, held for personal reasons, or held for repairs.
U.S. Census Bureau, Housing Inventory Estimate: Vacant Housing Units Held Off the Market and Vacant for Other Reasons for the United States [EOTHUSQ176N], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/EOTHUSQ176N, April 22, 2019.