How old are the homes in Los Alamos, NM?

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

56.6% (±6.4 points) of the homes in Los Alamos, NM were built before 1980 (2020–2024 American Community Survey).

0.0% were built before 1940.

7.2% were built in 2010 or later.

Figures last updated on November 12, 2026.

Built before 1980: 56.6% (±6.4 points)
Built before 1940: 0.0%
Built 2010 or later: 7.2%

When the homes in Los Alamos were built

Housing units by year structure built, 2020–2024
Year built	Los Alamos	Los Alamos County	New Mexico	United States
2020 or later	1.8% (±1.0 points)	3.8%	1.4%	2.0%
2010 to 2019	5.4% (±2.2 points)	4.3%	8.4%	9.4%
2000 to 2009	13.3% (±2.9 points)	11.0%	15.5%	13.6%
1990 to 1999	9.6% (±2.5 points)	8.0%	15.8%	12.4%
1980 to 1989	13.3% (±3.3 points)	10.7%	16.2%	12.9%
1970 to 1979	12.3% (±2.8 points)	21.7%	16.9%	14.2%
1960 to 1969	9.9% (±2.9 points)	15.6%	9.0%	9.9%
1950 to 1959	19.2% (±3.9 points)	13.6%	8.9%	9.5%
1940 to 1949	15.2% (±2.9 points)	11.0%	3.5%	4.4%
1939 or earlier	0.0% (±0.7 points)	0.1%	4.4%	11.7%

In Los Alamos, the share of homes built before 1980 is not measurably different from Los Alamos County (62.0%).

It is also higher than in New Mexico (42.7%).

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

Statewide, it ranks 60 of 205.

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 (44.3%) and the share built before 1980 (56.6%).

Homes built before 1980 in places near Los Alamos

Nearest places with a published estimate, compared with Los Alamos
Place	Distance	Homes built before 1980	Compared with this place
Los Alamos	—	56.6% (±6.4 points)	—
White Rock	7.5 mi	82.3% (±10.5 points)	Higher
El Rancho	11 mi	45.7% (±10.1 points)	Not measurably different
La Mesilla	13 mi	29.7% (±5.9 points)	Lower
Española	14 mi	53.7% (±6.1 points)	Not measurably different
El Valle de Arroyo Seco	15 mi	35.8% (±31.6 points)	Not measurably different
Pojoaque	16 mi	24.2% (±4.4 points)	Lower
Cuartelez	17 mi	44.3% (±39.6 points)	Not measurably different
Ohkay Owingeh	17 mi	45.5% (±16.9 points)	Not measurably different

Nearby places with a measurably lower figure: La Mesilla, NM (29.7%), Pojoaque, NM (24.2%).

Nearby places with a measurably higher figure: White Rock, NM (82.3%).

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

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

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 Los Alamos

How old are most homes in Los Alamos?

56.6% of homes in Los Alamos, NM were built before 1980 (2020–2024 American Community Survey).

Do homes in Los Alamos 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 44.3% and 56.6% of homes in Los Alamos were built before then.

Does a contractor need lead certification to work on older homes in Los Alamos?

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 — Los Alamos CDP, New Mexico

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 Los Alamos CDP, New Mexico (place:42320, in state:35).

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.