How old are the homes in the Town of Southold, NY?

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

68.6% (±5.2 points) of the homes in the Town of Southold, NY were built before 1980 (2020–2024 American Community Survey).

23.6% were built before 1940.

4.7% were built in 2010 or later.

Figures last updated on November 12, 2026.

Built before 1980: 68.6% (±5.2 points)
Built before 1940: 23.6%
Built 2010 or later: 4.7%

When the homes in the Town of Southold were built

Housing units by year structure built, 2020–2024
Year built	Town of Southold	Suffolk County	New York	United States
2020 or later	1.0% (±0.5 points)	0.7%	0.8%	2.0%
2010 to 2019	3.7% (±1.2 points)	3.7%	5.3%	9.4%
2000 to 2009	9.8% (±1.8 points)	8.3%	6.4%	13.6%
1990 to 1999	6.9% (±1.5 points)	8.9%	5.9%	12.4%
1980 to 1989	9.9% (±2.0 points)	10.2%	7.7%	12.9%
1970 to 1979	16.2% (±2.9 points)	17.8%	9.8%	14.2%
1960 to 1969	13.5% (±2.4 points)	19.7%	12.1%	9.9%
1950 to 1959	10.1% (±1.8 points)	17.2%	14.1%	9.5%
1940 to 1949	5.2% (±1.4 points)	4.5%	7.6%	4.4%
1939 or earlier	23.6% (±2.7 points)	9.1%	30.3%	11.7%

In the Town of Southold, the share of homes built before 1980 is not measurably different from Suffolk County (68.3%).

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

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

In Suffolk County, the Town of Southold ranks 5 of 12 places with a published estimate, from highest to lowest share of homes built before 1980.

Statewide, it ranks 310 of 1,006.

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 (52.4%) and the share built before 1980 (68.6%).

Homes built before 1980 in places near the Town of Southold

Nearest places with a published estimate, compared with the Town of Southold
Place	Distance	Homes built before 1980	Compared with this place
Town of Southold	—	68.6% (±5.2 points)	—
Village of Dering Harbor	3.4 mi	35.7% (±188.7 points)	Not measurably different
Village of Greenport	3.6 mi	82.2% (±12.4 points)	Higher
Town of Shelter Island	5.1 mi	49.7% (±11.7 points)	Lower
Shelter Island (community)	5.9 mi	59.1% (±18.6 points)	Not measurably different
Shelter Island Heights	6.2 mi	43.1% (±13.3 points)	Lower
Village of North Haven	8.0 mi	40.2% (±8.1 points)	Lower
Northwest Harbor	10 mi	39.1% (±10.9 points)	Lower
Village of Sag Harbor	10 mi	66.5% (±10.7 points)	Not measurably different

Nearby places with a measurably lower figure: Town of Shelter Island, NY (49.7%), Shelter Island Heights, NY (43.1%), Village of North Haven, NY (40.2%).

Nearby places with a measurably higher figure: Village of Greenport, NY (82.2%).

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

Homes built before 1980 across Suffolk County, place by place

Rank	Place	Homes built before 1980
1	Town of Babylon	78.9% (±2.3 points)
2	Town of Huntington	78.5% (±2.3 points)
3	Town of Islip	75.1% (±1.8 points)
4	Town of Smithtown	74.2% (±3.0 points)
5	Town of Southold	68.6% (±5.2 points)
6	Town of Brookhaven	64.8% (±1.4 points)
7	Town of East Hampton	49.8% (±3.9 points)
8	Town of Shelter Island	49.7% (±11.7 points)
9	Town of Southampton	45.8% (±2.4 points)
10	Town of Riverhead	45.1% (±5.2 points)
11	Shinnecock Reservation	37.6% (±28.9 points)

Showing 11 of 12 places in Suffolk County, ranked from highest to lowest.

A New York town includes the villages and hamlets inside it, so the figures for the Town of Southold include them.

The figures for the Town of Southold include the places inside it that have pages of their own: Cutchogue, East Marion, Greenport West, Laurel, Mattituck, Orient, Southold (community).

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 Town of Southold

How old are most homes in the Town of Southold?

68.6% of homes in the Town of Southold, NY were built before 1980 (2020–2024 American Community Survey).

Do homes in the Town of Southold 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 52.4% and 68.6% of homes in the Town of Southold were built before then.

Does a contractor need lead certification to work on older homes in the Town of Southold?

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 — Southold town, Suffolk County, 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 Southold town, Suffolk County, New York (county subdivision:69463, in state:36 county:103).

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.