How old are the homes in Los Altos Hills, CA?

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

56.2% (±9.0 points) of the homes in Los Altos Hills, CA were built before 1980 (2020–2024 American Community Survey).

2.1% were built before 1940.

5.9% were built in 2010 or later.

Figures last updated on November 12, 2026.

Built before 1980: 56.2% (±9.0 points)
Built before 1940: 2.1%
Built 2010 or later: 5.9%

When the homes in Los Altos Hills were built

Housing units by year structure built, 2020–2024
Year built	Los Altos Hills	Santa Clara County	California	United States
2020 or later	1.5% (±1.6 points)	1.5%	1.3%	2.0%
2010 to 2019	4.4% (±2.4 points)	9.1%	6.5%	9.4%
2000 to 2009	9.9% (±3.7 points)	9.4%	11.2%	13.6%
1990 to 1999	13.7% (±4.4 points)	8.9%	10.1%	12.4%
1980 to 1989	14.4% (±3.8 points)	11.3%	14.9%	12.9%
1970 to 1979	17.8% (±4.3 points)	20.3%	16.8%	14.2%
1960 to 1969	23.2% (±6.2 points)	17.7%	12.5%	9.9%
1950 to 1959	10.4% (±4.3 points)	13.7%	12.4%	9.5%
1940 to 1949	2.7% (±1.6 points)	3.3%	5.4%	4.4%
1939 or earlier	2.1% (±1.6 points)	4.7%	8.9%	11.7%

In Los Altos Hills, the share of homes built before 1980 is not measurably different from Santa Clara County (59.7%).

It is not measurably different from California (56.0%).

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

In Santa Clara County, Los Altos Hills ranks 19 of 23 places with a published estimate, from highest to lowest share of homes built before 1980.

Statewide, it ranks 532 of 1,076.

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 (38.4%) and the share built before 1980 (56.2%).

Homes built before 1980 in places near Los Altos Hills

Nearest places with a published estimate, compared with Los Altos Hills
Place	Distance	Homes built before 1980	Compared with this place
Los Altos Hills	—	56.2% (±9.0 points)	—
Palo Alto	2.1 mi	69.9% (±3.2 points)	Higher
Los Altos	2.3 mi	72.9% (±4.3 points)	Higher
Loyola	2.5 mi	63.6% (±10.0 points)	Not measurably different
Mountain View	4.0 mi	60.1% (±2.6 points)	Not measurably different
Ladera	4.0 mi	95.4% (±32.6 points)	Higher
Stanford	4.5 mi	46.8% (±7.6 points)	Not measurably different
Portola Valley	5.2 mi	79.2% (±14.9 points)	Higher
West Menlo Park	5.8 mi	64.1% (±14.9 points)	Not measurably different

Nearby places with a measurably higher figure: Palo Alto, CA (69.9%), Los Altos, CA (72.9%), Ladera, CA (95.4%).

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

Homes built before 1980 across Santa Clara County, place by place

Rank	Place	Homes built before 1980
13	Cupertino	63.7% (±3.5 points)
14	Loyola	63.6% (±10.0 points)
15	San Jose	60.5% (±0.9 points)
16	Mountain View	60.1% (±2.6 points)
17	Santa Clara	58.8% (±2.3 points)
18	Sunnyvale	57.4% (±2.0 points)
19	Los Altos Hills	56.2% (±9.0 points)
20	Stanford	46.8% (±7.6 points)
21	Milpitas	39.7% (±2.5 points)
22	Gilroy	35.5% (±3.3 points)
23	Morgan Hill	33.8% (±3.1 points)

Showing 11 of 23 places in Santa Clara County, ranked from highest to lowest.

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 Altos Hills

How old are most homes in Los Altos Hills?

56.2% of homes in Los Altos Hills, CA were built before 1980 (2020–2024 American Community Survey).

Do homes in Los Altos Hills 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 38.4% and 56.2% of homes in Los Altos Hills were built before then.

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

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 Altos Hills town, California

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 Altos Hills town, California (place:43294, in state:06).

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.