Housing units built2020 Census through 2025
Conshohocken's housing stock grew 19.3% from 2020 through 2025, the most in Montgomery County, as county construction fell to 1,600 units
Montgomery County counted 1,600 new housing units in 2025, 10% fewer than the 1,782 it counted in 2024. Since the 2020 Census, Conshohocken has added 972, almost all of them multifamily.
19.3%
Increase in Conshohocken's housing units from the 2020 Census through 2025
| 2020 Census | 5,033 |
|---|---|
| Built, 2020 to 2025 | 972 |
| of them multifamily | 932 |
| Through 2025 | 6,005 |
Figure 1Largest gains
Conshohocken's gain was the largest of any municipality in the county
| Municipality | Built 2020 to 2025 | Units 2020 Census |
|---|---|---|
| Conshohocken | 972 | 5,033 |
| Bridgeport | 324 | 2,236 |
| Upper Dublin | 1,227 | 10,088 |
| Lower Pottsgrove | 567 | 4,790 |
| Worcester | 386 | 3,958 |
| Douglass | 369 | 4,004 |
| Montgomery County | 14,156 | 346,877 |
Montgomery County counted 1,600 newly built housing units in 2025, 10% fewer than the 1,782 it counted in 2024 and the lowest total of the six years from 2020 through 2025, according to the Montgomery County Planning Commission's 2025 Housing Units Built report. The same report tallies each municipality's construction since the 2020 Census. Conshohocken added 972 units over those six years, raising its housing stock 19.3%, from 5,033 units to 6,005. That was the largest percentage gain of any municipality in the county.
Section 1The county count
The county counted 1,600 new units in 2025, the fewest of the six years
The commission builds its count from the records of the county Board of Assessment Appeals, the office that keeps property assessments. The board does not record a unit as built until it has been fitted out and sold or put on the market for rent, so a unit finished late in one year can appear in the next year's count, the report says. The commission also updated its figures for earlier years in this edition to match final totals.
Figure 2Montgomery County
The yearly total fell from 3,385 units in 2020 to 1,600 in 2025
Section 2What the county built in 2025
Single-family building fell in 2025 and multifamily rose 73%
The drop came from single-family construction. The county counted 447 new single-family detached homes, 24% fewer than in 2024, and 503 single-family attached units, 38% fewer. The commission counts rowhomes, twins, townhouses and three- and four-unit homes as attached when walls from ground to roof separate the units.
Multifamily units, apartments and condominiums in buildings with shared hallways, rose 73% to 623 from 360 in 2024. That was still well under the 2,028 multifamily units counted in 2020 and the 1,465 counted in 2022. Multifamily made up 38.9% of the 2025 total. The county also counted 27 mobile homes.
Figure 3Montgomery County
Multifamily passed both kinds of single-family home in 2025
Upper Dublin led the county with 323 units, 310 of them multifamily. Bridgeport followed with 138, all single-family attached, then Horsham with 110, Hatfield Township with 106 and Norristown with 100. The report counts 224 age-restricted units, generally for residents 55 and older, about 14% of the year's total.
Section 3Conshohocken and the nearby townships
Conshohocken added 972 units since 2020, and 932 were multifamily
Conshohocken's six-year gain was almost all multifamily. Of its 972 units since 2020, 932 were multifamily, along with 30 detached and 10 attached homes. In 2025 the borough counted 10 units, 8 detached and 2 attached, and no multifamily.
Figure 4Montgomery County
Upper Merion added 1,203 units and Conshohocken 972, most of both multifamily
| Municipality | Multifamily Other | Built 2020 to 2025 | Multifamily 2020 to 2025 | Units 2020 Census | Units through 2025 | Increase | Built in 2025 |
|---|---|---|---|---|---|---|---|
| Conshohocken | 972 | 932 | 5,033 | 6,005 | 19.3% | 10 | |
| Upper Merion | 1,203 | 807 | 15,991 | 17,194 | 7.5% | 71 | |
| Lower Merion | 931 | 844 | 25,796 | 26,727 | 3.6% | 16 | |
| Plymouth | 403 | 233 | 7,654 | 8,057 | 5.3% | 29 | |
| Whitemarsh | 401 | 191 | 8,055 | 8,456 | 5.0% | 22 | |
| West Conshohocken | 3 | 0 | 720 | 723 | 0.4% | 1 | |
| Montgomery County | 14,156 | 6,745 | 346,877 | 361,033 | 4.1% | 1,600 |
Upper Merion added 1,203 units from 2020 through 2025, second in the county to Upper Dublin's 1,227, and Conshohocken's 972 ranked third. Lower Merion added 931, mostly multifamily. Plymouth added 403 and Whitemarsh 401. West Conshohocken, with 720 housing units at the 2020 Census, added 3.
Taken together, the six municipalities held 18.2% of the county's housing units at the 2020 Census. They accounted for 27.6% of the units built since, and 44.6% of the multifamily units. Their share fell in 2025, when they counted 149 units, 9.3% of the county total.
Figure 5Montgomery County
The six held 18.2% of the county's homes and drew 44.6% of its new multifamily units
The 2025 work near Conshohocken was single-family. Of the 149 units, 85 were attached and 61 detached, and Lower Merion's 3 were the only multifamily units. Upper Merion's 65 attached units and Whitemarsh's 18 made up nearly all of the attached count. Plymouth's 29 units were all detached.
Figure 6Montgomery County
The six counted 149 units in 2025, and 3 of them were multifamily
Section 4Permits and completions
Permits ran ahead of completed units by 708 in 2024 and 631 in 2025
Building permits give an earlier reading of the same market. The Census Bureau's Building Permits Survey shows Montgomery County's municipalities authorized 2,490 new housing units in 2024 and 2,231 in 2025. In both years the permit count ran ahead of the units the planning commission counted as built, by 708 units in 2024 and 631 in 2025.
Figure 7Montgomery County
Units built ran above permits through 2023, then fell below them
From 2020 through 2023 the order was the other way: each year the county counted more units built than permitted. In 2023, for example, the commission counted 2,419 units built against 1,425 permitted. A permit comes before construction starts, and a project can take more than a year to reach the point where the assessment office records it, so the two series run on different schedules. Units permitted in 2024 and 2025 that have not yet been counted as built may appear in later editions of the report if they are finished.
Section 5For contractors
What 3 finished multifamily units nearby mean for your bids
If your residential work in the townships around Conshohocken depends on apartment buildings, the 2025 count shows how little of that type was finished nearby: 3 multifamily units in the six municipalities, after 3,007 from 2020 through 2025. The year's local completions were townhouses and single homes, mostly in Upper Merion, Plymouth and Whitemarsh.
For the work still ahead, check the approvals that have not yet turned into permits. Ask the borough or township zoning office which approved land developments have not pulled building permits, and watch the planning commission agendas. Recent items include the 162-unit sketch plan on Bethlehem Pike in Whitemarsh and the request to extend the variances for an office and garage on the Conshohocken riverfront. For the permit and jobs series behind this market, see construction jobs, permits and materials prices.
NotesCaveats
The count runs on assessment records, so it trails construction
The count depends on assessment records, so it measures units fitted out and sold or offered for rent, not units started or framed. A large building finished in December can land in the following year. Because the commission revised earlier years in this edition, its figures for 2020 through 2024 can differ from those in earlier reports.
The report's yearly county totals for 2020 through 2025 add up to 14,112 units, while its municipal table totals 14,156. This article uses each table as the report prints it.
The report counts new housing units only. It leaves out additions, renovations, conversions and commercial work, which make up much of the volume for small contractors here. The county's nonresidential construction comes in a separate report.
The permit figures come from a different agency and measure a different step. FRED titles the series as housing structures, but its values match the Delaware Valley Regional Planning Commission's count of housing units for the county: 2,490 in 2024, the sum of 1,877 single-family, 72 small multifamily and 541 large multifamily units. A permit can also lapse before construction starts.
Figure 8Montgomery County
Montgomery County built 1,600 units and permitted 2,231 in 2025
| Year | Single-family detached | Single-family attached | Multifamily | Mobile homes | Total built | Units permitted |
|---|---|---|---|---|---|---|
| 2020 | 727 | 606 | 2,028 | 24 | 3,385 | 1,892 |
| 2021 | 664 | 501 | 973 | 18 | 2,156 | 1,498 |
| 2022 | 663 | 629 | 1,465 | 13 | 2,770 | 2,149 |
| 2023 | 537 | 610 | 1,243 | 29 | 2,419 | 1,425 |
| 2024 | 589 | 815 | 360 | 18 | 1,782 | 2,490 |
| 2025 | 447 | 503 | 623 | 27 | 1,600 | 2,231 |