How old are the homes in Lower Gwynedd Township, PA?

Name: Age of homes in Lower Gwynedd Township, PA, 2020–2024
Creator: US Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

52.4% (±6.8 points) of the homes in Lower Gwynedd Township, PA were built before 1980 (2020–2024 American Community Survey).

7.9% were built before 1940.

4.7% were built in 2010 or later.

Figures last updated on November 12, 2026.

Built before 1980: 52.4% (±6.8 points)
Built before 1940: 7.9%
Built 2010 or later: 4.7%

When the homes in Lower Gwynedd Township were built

Housing units by year structure built, 2020–2024
Year built	Lower Gwynedd Township	Montgomery County	Pennsylvania	United States
2020 or later	1.9% (±1.0 points)	1.5%	1.0%	2.0%
2010 to 2019	2.8% (±1.7 points)	6.6%	5.1%	9.4%
2000 to 2009	8.8% (±3.2 points)	8.6%	8.1%	13.6%
1990 to 1999	13.8% (±3.6 points)	10.8%	8.9%	12.4%
1980 to 1989	20.2% (±3.7 points)	11.4%	9.6%	12.9%
1970 to 1979	19.6% (±3.8 points)	12.1%	12.4%	14.2%
1960 to 1969	10.9% (±2.7 points)	11.7%	9.9%	9.9%
1950 to 1959	10.1% (±3.3 points)	15.9%	13.0%	9.5%
1940 to 1949	3.9% (±1.5 points)	5.4%	7.0%	4.4%
1939 or earlier	7.9% (±3.3 points)	16.0%	25.0%	11.7%

In Lower Gwynedd Township, the share of homes built before 1980 is lower than in Montgomery County (61.1%).

It is also lower than in Pennsylvania (67.3%).

It is not measurably different from the national figure (49.7%).

In Montgomery County, Lower Gwynedd Township ranks 37 of 62 places with a published estimate, from highest to lowest share of homes built before 1980.

Statewide, it ranks 1921 of 2,558.

Rankings use the estimates alone; where margins of error overlap, neighboring ranks may not truly differ.

Why the age of a home matters: lead-based paint

Federal law treats housing built before 1978 as likely to contain lead-based paint.

Before a lease or sale of most pre-1978 housing, the landlord or seller must disclose any known lead-based paint and hazards and give the tenant or buyer the EPA pamphlet (42 U.S.C. § 4852d; 40 CFR part 745, subpart F; 24 CFR part 35, subpart A).

A contractor paid to renovate, repair or paint a pre-1978 home must be a certified firm, use a certified renovator and follow lead-safe work practices under the Renovation, Repair and Painting Rule (40 CFR part 745, subpart E) whenever the job disturbs more than 6 square feet of painted surface in a room or more than 20 square feet outside; window replacement and demolition always count (40 CFR 745.83).

Certification comes from EPA, or from the state where EPA has authorized the state to run the program.

The Census Bureau groups construction by decade, so the share built before 1978 lies between the share built before 1970 (32.8%) and the share built before 1980 (52.4%).

Homes built before 1980 in places near Lower Gwynedd Township

Nearest places with a published estimate, compared with Lower Gwynedd Township
Place	Distance	Homes built before 1980	Compared with this place
Lower Gwynedd Township	—	52.4% (±6.8 points)	—
Ambler	2.4 mi	84.3% (±11.9 points)	Higher
North Wales	2.5 mi	89.2% (±19.3 points)	Higher
Upper Gwynedd Township	3.0 mi	44.0% (±6.0 points)	Not measurably different
Whitpain Township	3.1 mi	41.0% (±4.6 points)	Lower
Maple Glen	3.2 mi	42.7% (±7.5 points)	Not measurably different
Blue Bell	3.3 mi	35.5% (±6.6 points)	Lower
Montgomery Township (Montgomery County)	3.8 mi	21.3% (±3.5 points)	Lower
Horsham Township	3.9 mi	50.3% (±5.6 points)	Not measurably different

Nearby places with a measurably lower figure: Whitpain Township, PA (41.0%), Blue Bell, PA (35.5%), Montgomery Township (Montgomery County), PA (21.3%).

Nearby places with a measurably higher figure: Ambler, PA (84.3%), North Wales, PA (89.2%).

Distance is measured in a straight line between the Census Bureau’s internal points for each place.

Homes built before 1980 across Montgomery County, place by place

Rank	Place	Homes built before 1980
31	East Norriton Township	59.0% (±7.6 points)
32	Conshohocken	58.6% (±7.9 points)
33	Collegeville	57.6% (±14.4 points)
34	Whitemarsh Township	57.4% (±5.7 points)
35	Upper Merion Township	55.0% (±3.8 points)
36 (tie)	Hatfield Township	52.4% (±5.5 points)
36 (tie)	Lower Gwynedd Township	52.4% (±6.8 points)
36 (tie)	West Norriton Township	52.4% (±7.1 points)
39	Lower Providence Township	52.1% (±5.4 points)
40 (tie)	Horsham Township	50.3% (±5.6 points)
40 (tie)	Towamencin Township	50.3% (±5.1 points)
40 (tie)	Upper Salford Township	50.3% (±9.6 points)
43	Trappe	46.1% (±12.4 points)

Showing 13 of 62 places in Montgomery County, ranked from highest to lowest.

The figures for Lower Gwynedd Township include the places inside it that have pages of their own: Spring House.

Survey years: 2020–2024 (American Community Survey 5-year estimates).

Margins of error are at the 90% confidence level.

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Questions about Lower Gwynedd Township

How old are most homes in Lower Gwynedd Township?

52.4% of homes in Lower Gwynedd Township, PA were built before 1980 (2020–2024 American Community Survey).

Do homes in Lower Gwynedd Township need a lead paint disclosure?

A home built before 1978 does, before it is rented or sold, unless an exemption applies (42 U.S.C. § 4852d); between 32.8% and 52.4% of homes in Lower Gwynedd Township were built before then.

Does a contractor need lead certification to work on older homes in Lower Gwynedd Township?

Yes, when the job disturbs more than 6 square feet of paint in a room or 20 square feet outside, or replaces a window: the firm must be certified and a certified renovator must direct the work under the Renovation, Repair and Painting Rule (40 CFR part 745, subpart E).

Sources

Selected Housing Characteristics (DP04), 2020–2024 ACS 5-year estimates — Lower Gwynedd township, Montgomery County, Pennsylvania

To check these figures in the Census Bureau’s own API, request the variables below from the 2024 ACS 5-year data profile (acs/acs5/profile) for Lower Gwynedd township, Montgomery County, Pennsylvania (county subdivision:44920, in state:42 county:091).

Each estimate (E or PE) has a margin of error beside it (M or PM).

The API needs a free key.

Request a Census API key.

DP04_0017PE, DP04_0017PM, DP04_0018PE, DP04_0018PM, DP04_0019PE, DP04_0019PM, DP04_0020PE, DP04_0020PM, DP04_0021PE, DP04_0021PM, DP04_0022PE, DP04_0022PM, DP04_0023PE, DP04_0023PM, DP04_0024PE, DP04_0024PM, DP04_0025PE, DP04_0025PM, DP04_0026PE, DP04_0026PM

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Figures are published by the US Census Bureau, HUD, the Bureau of Labor Statistics and the FBI; Seayora reproduces them and does not adjust them, except where a sentence says it compares dollar figures after inflation. They describe the whole place, not any one building or street, and are not an appraisal, a rent determination, a tax bill, a safety rating or legal advice.