Middle Atlantic division · Northeast
Pennsylvania
Pennsylvania authorized 25,709 new housing units in 2025. Per 1,000 residents it authorized 2.3 units a year in 2021–2025, 50% of the national rate of 4.7. Its busiest year since 2004 was 2004, with 49,665 units; 2025 came to 52% of that.
Single-family2–4 units5+ units
Houses or apartments
In Pennsylvania, 56% of the units authorized in 2021–2025 were single-family houses and 39% were in buildings of five or more units, against 34% nationally. The closest match in building mix among the 50 other states is Wisconsin (40% in five-plus buildings). That share has risen sharply since 2004–2006, when it stood at 13%. Units in five-plus buildings peaked in 2021 (26,590), single-family houses in 2004 (41,496).
Boom, bust and since
Its peak year is shared by 11 other states, among them Ohio, Michigan, Virginia. Annual permits fell from 49,665 during the mid-2000s boom to 14,967 in 2011, a drop of 70%. The nearest bust profile among the states was Maine's (69%). The 2021–2025 pace of 30,376 units a year is 32% below the 2004–2006 pace.
Metro areas
In 2021–2025, 92% of the units authorized in Pennsylvania fell in counties belonging to one of its 16 metro areas; the other 7.5% came from smaller towns and rural counties. Philadelphia leads with 17,962 units a year (counting its part in neighboring states).
Average units authorized per year, 2021–2025.
Busiest permit offices
Across Pennsylvania, 1811 permit offices authorized new housing in 2021–2025. The busiest was Philadelphia, with 38,671 units or 26% of the total, followed by Pittsburgh with 9,003. Among the three largest, Pittsburgh put 90% of its units in five-plus buildings, Adams County 0%.
Share of the units authorized in Pennsylvania, 2021–2025.
Reported and estimated
Permit offices in Pennsylvania reported 91% of the 2021–2025 units directly; the Census Bureau estimated 8.7% for offices that missed months (US: 8.2%; closest state: Tennessee, 8.8%).
Similar in size
| State | 2004–2025 | 2025 units | Per 1,000 a year | 5+ share |
|---|---|---|---|---|
| Pennsylvania | 25,709 | 2.3 | 39% | |
| Illinois | 18,551 | 1.5 | 40% | |
| Ohio | 33,640 | 2.6 | 37% | |
| Georgia | 61,196 | 6.1 | 28% | |
| North Carolina | 86,167 | 8.6 | 28% |
Rates and shares: 2021–2025.
Every yearly figure behind the chart, split by building size: yearly-units.csv. Counting rules.