Metro area in Maryland · part of the Washington-Baltimore-Arlington, DC-MD-VA-WV-PA combined area
Baltimore-Columbia-Towson, MD
The Baltimore-Columbia-Towson metro area authorized 5,799 new housing units in 2025, the largest total of the 4 metro areas based in Maryland. Buildings with five or more units accounted for 44% of the units authorized in 2021–2025, the highest share among the 4 metro areas based in Maryland. Recent building has not returned to boom levels: the 2021–2025 yearly average was 31% below the 2004–2006 average, the largest recovery by this measure among the 4 metro areas based in Maryland.
Single-family2–4 units5+ units
Its 2025 total reached 51% of the 2005 high, the closest to a series peak among the 4 metro areas based in Maryland.
Where in the metro
Anne Arundel County accounted for 23% of the metro area's units in 2021–2025, Baltimore city for 20%.
Boom, bust and since
Its peak year is shared by 105 other metro areas, among them Orlando, Portland, OR, Las Vegas. Annual permits fell from 11,327 during the mid-2000s boom to 5,115 in 2009, a drop of 55%. The nearest bust profile in the South Atlantic states was Wildwood's (55%). From 2024 to 2025 the count fell 7.7%.
Relative to population
With 2,857,781 residents in July 2025, Baltimore authorized 2.4 units per 1,000 residents a year in 2021–2025, under the national 4.7. The metro areas with the nearest rates are Macon (2.4) and Pueblo (2.4).
Houses or apartments
The closest match in building mix among the 386 other metro areas is Spokane (44% in five-plus buildings). That share has risen sharply since 2004–2006, when it stood at 24%. Units in five-plus buildings peaked in 2018 (3,920), single-family houses in 2005 (8,386).
The wider Washington-Baltimore-Arlington region
The Census Bureau groups Baltimore with 5 neighboring metro areas in the Washington-Baltimore-Arlington, DC-MD-VA-WV-PA combined area. Metro areas in it authorized 35,852 units a year in 2021–2025 (micropolitan parts not counted); Baltimore accounted for 19%. The others, with their yearly averages: Washington (25,128), Hagerstown (1,818), Winchester (1,011), Chambersburg (637), Lexington Park (450).
Busiest permit offices
Across the metro area, 15 permit offices authorized new housing in 2021–2025. The busiest was Anne Arundel County (unincorporated), with 7,300 units or 21% of the total, followed by Baltimore with 6,873. Among the three largest, Baltimore put 88% of its units in five-plus buildings, Baltimore County 28%.
Share of the units authorized in the metro area, 2021–2025.
Similar in size
| Metro area | 2004–2025 | 2025 units | Per 1,000 a year | 5+ share |
|---|---|---|---|---|
| Orlando-Kissimmee-Sanford, FL | 27,845 | 9.6 | 40% | |
| Charlotte-Concord-Gastonia, NC-SC | 22,233 | 9.6 | 30% | |
| Baltimore-Columbia-Towson, MD | 5,799 | 2.4 | 44% | |
| St. Louis, MO-IL | 6,066 | 2.7 | 33% | |
| San Antonio-New Braunfels, TX | 10,546 | 6.5 | 39% |
Rates and shares: 2021–2025.
Every yearly figure behind the chart, split by building size: yearly-units.csv. State view: Maryland. Counting rules.