Metro area in Michigan · part of the Detroit-Warren-Ann Arbor, MI combined area
Ann Arbor, MI
The Ann Arbor metro area authorized 1,088 new housing units in 2025. Buildings with five or more units accounted for 41% of the units authorized in 2021–2025, the highest share among the 15 metro areas based in Michigan. Its busiest year since 2004 was 2004, with 2,708 units; 2025 came to 40% of that.
Single-family2–4 units5+ units
Boom, bust and since
Its peak year is shared by 98 other metro areas, among them Canton, Flint, Rockford. Annual permits fell from 2,708 during the mid-2000s boom to 253 in 2009, a drop of 91%. The nearest bust profile in the East North Central states was Mansfield's (91%). The 2021–2025 pace of 1,090 units a year is 37% below the 2004–2006 pace. Permits rose 5 years in a row up to 2020. From 2024 to 2025 the count fell 8.8%.
Relative to population
With 370,214 residents in July 2025, Ann Arbor authorized 3.0 units per 1,000 residents a year in 2021–2025, under the national 4.7. The metro areas with the nearest rates are Tyler (3.0) and State College (3.0).
The wider Detroit-Warren-Ann Arbor region
The Census Bureau groups Ann Arbor with 3 neighboring metro areas in the Detroit-Warren-Ann Arbor, MI combined area. Metro areas in it authorized 9,723 units a year in 2021–2025 (micropolitan parts not counted); Ann Arbor accounted for 11%. The others, with their yearly averages: Detroit (7,957), Flint (432), Monroe, MI (243).
Busiest permit offices
Across the metro area, 19 permit offices authorized new housing in 2021–2025. The busiest was Ann Arbor, with 1,439 units or 26% of the total, followed by Pittsfield charter township with 1,223. Among the three largest, Ann Arbor put 56% of its units in five-plus buildings, Washtenaw County Part (unincorporated) 13%.
Share of the units authorized in the metro area, 2021–2025.
Houses or apartments
The closest match in building mix among the 386 other metro areas is Manchester (41% in five-plus buildings). That share has risen sharply since 2004–2006, when it stood at 20%. Units in five-plus buildings peaked in 2023 (1,080), single-family houses in 2004 (1,994).
Similar in size
| Metro area | 2004–2025 | 2025 units | Per 1,000 a year | 5+ share |
|---|---|---|---|---|
| Hickory-Lenoir-Morganton, NC | 3,136 | 6.9 | 20% | |
| Atlantic City-Hammonton, NJ | 1,613 | 4.1 | 14% | |
| Ann Arbor, MI | 1,088 | 3.0 | 41% | |
| Lubbock, TX | 2,869 | 8.0 | 17% | |
| Huntington-Ashland, WV-KY-OH | 309 | 0.9 | 21% |
Rates and shares: 2021–2025.
Every yearly figure behind the chart, split by building size: yearly-units.csv. State view: Michigan. Counting rules.