New Private Housing Authorized by Building Permits: 1-Unit Structures for Baltimore-Columbia-Towson, MD (MSA) was 290.00000 Units in March of 2025, according to the United States Federal Reserve. Historically, New Private Housing Authorized by Building Permits: 1-Unit Structures for Baltimore-Columbia-Towson, MD (MSA) reached a record high of 3441.00000 in June of 1992 and a record low of 138.00000 in February of 2009. Trading Economics provides the current actual value, an historical data chart and related indicators for New Private Housing Authorized by Building Permits: 1-Unit Structures for Baltimore-Columbia-Towson, MD (MSA) - last updated from the United States Federal Reserve on April of 2026.