New Private Housing Structures Authorized by Building Permits for Mercer County, NJ was 643.00000 Units in January of 2022, according to the United States Federal Reserve. Historically, New Private Housing Structures Authorized by Building Permits for Mercer County, NJ reached a record high of 1641.00000 in January of 2004 and a record low of 269.00000 in January of 2009. Trading Economics provides the current actual value, an historical data chart and related indicators for New Private Housing Structures Authorized by Building Permits for Mercer County, NJ - last updated from the United States Federal Reserve on May of 2024.