How old are the homes in South Farmingdale, NY?

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

95.0% (±6.7 points) of the homes in South Farmingdale, NY were built before 1980 (2020–2024 American Community Survey).

3.3% were built before 1940.

0.0% were built in 2010 or later.

Figures last updated on November 12, 2026.

Built before 1980: 95.0% (±6.7 points)
Built before 1940: 3.3%
Built 2010 or later: 0.0%

When the homes in South Farmingdale were built

Housing units by year structure built, 2020–2024
Year built	South Farmingdale	Nassau County	New York	United States
2020 or later	0.0% (±0.9 points)	0.8%	0.8%	2.0%
2010 to 2019	0.0% (±0.9 points)	3.2%	5.3%	9.4%
2000 to 2009	0.4% (±0.4 points)	3.3%	6.4%	13.6%
1990 to 1999	2.1% (±1.3 points)	2.7%	5.9%	12.4%
1980 to 1989	2.5% (±1.3 points)	4.7%	7.7%	12.9%
1970 to 1979	3.4% (±2.2 points)	6.1%	9.8%	14.2%
1960 to 1969	16.1% (±3.7 points)	13.2%	12.1%	9.9%
1950 to 1959	66.8% (±4.5 points)	33.9%	14.1%	9.5%
1940 to 1949	5.4% (±2.0 points)	13.0%	7.6%	4.4%
1939 or earlier	3.3% (±1.5 points)	19.2%	30.3%	11.7%

In South Farmingdale, the share of homes built before 1980 is higher than in Nassau County (85.4%).

It is also higher than in New York (73.9%).

It is higher than the national figure (49.7%).

In Nassau County, South Farmingdale ranks 6 of 62 places with a published estimate, from highest to lowest share of homes built before 1980.

Statewide, it ranks 11 of 414.

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 (91.6%) and the share built before 1980 (95.0%).

Homes built before 1980 in places near South Farmingdale

Nearest places with a published estimate, compared with South Farmingdale
Place	Distance	Homes built before 1980	Compared with this place
South Farmingdale	—	95.0% (±6.7 points)	—
Village of Farmingdale	1.1 mi	69.4% (±10.2 points)	Lower
North Massapequa	1.4 mi	93.9% (±6.5 points)	Not measurably different
Plainedge	1.6 mi	92.0% (±8.9 points)	Not measurably different
North Amityville	2.2 mi	62.3% (±8.7 points)	Lower
East Farmingdale	2.4 mi	73.3% (±12.0 points)	Lower
Old Bethpage	2.4 mi	63.6% (±10.0 points)	Lower
Village of Massapequa Park	2.5 mi	93.7% (±6.0 points)	Not measurably different
East Massapequa	2.9 mi	79.1% (±6.4 points)	Lower

Nearby places with a measurably lower figure: Village of Farmingdale, NY (69.4%), North Amityville, NY (62.3%), East Farmingdale, NY (73.3%).

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

Homes built before 1980 across Nassau County, place by place

Rank	Place	Homes built before 1980
1	Bellerose Terrace	99.0% (±15.5 points)
2	Garden City South	97.2% (±16.0 points)
3	West Hempstead	96.0% (±7.5 points)
4	Lido Beach	95.7% (±19.6 points)
5	Levittown	95.1% (±4.9 points)
6	South Farmingdale	95.0% (±6.7 points)
7	University Gardens	94.8% (±13.6 points)
8	North New Hyde Park	94.5% (±8.4 points)
9	South Valley Stream	94.0% (±13.7 points)
10	North Massapequa	93.9% (±6.5 points)
11 (tie)	Hewlett	93.6% (±16.6 points)
11 (tie)	South Hempstead	93.6% (±15.9 points)

Showing 12 of 62 places in Nassau County, ranked from highest to lowest.

South Farmingdale is a census-designated place: an unincorporated community the Census Bureau draws for statistics, with no municipal government of its own.

It lies inside the Town of Oyster Bay, whose figures include it.

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 South Farmingdale

How old are most homes in South Farmingdale?

95.0% of homes in South Farmingdale, NY were built before 1980 (2020–2024 American Community Survey).

Do homes in South Farmingdale 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 91.6% and 95.0% of homes in South Farmingdale were built before then.

Does a contractor need lead certification to work on older homes in South Farmingdale?

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 — South Farmingdale CDP, New York

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 South Farmingdale CDP, New York (place:69001, in state:36).

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.