How old are the homes in Mammoth Lakes, CA?

51.1% (±6.2 points) of the homes in Mammoth Lakes, CA were built before 1980 (2020–2024 American Community Survey).

1.9% were built before 1940.

2.1% were built in 2010 or later.

Figures last updated on .

Built before 1980
51.1% (±6.2 points)
Built before 1940
1.9%
Built 2010 or later
2.1%

When the homes in Mammoth Lakes were built

Housing units by year structure built, 2020–2024
Year builtMammoth LakesMono CountyCaliforniaUnited States
2020 or later0.4% (±0.4 points)0.3%1.3%2.0%
2010 to 20191.7% (±1.2 points)2.2%6.5%9.4%
2000 to 200911.5% (±3.3 points)13.2%11.2%13.6%
1990 to 199915.4% (±3.3 points)15.2%10.1%12.4%
1980 to 198919.8% (±3.4 points)19.7%14.9%12.9%
1970 to 197931.6% (±4.1 points)27.8%16.8%14.2%
1960 to 196914.6% (±4.1 points)13.3%12.5%9.9%
1950 to 19592.5% (±1.5 points)3.3%12.4%9.5%
1940 to 19490.5% (±0.7 points)0.5%5.4%4.4%
1939 or earlier1.9% (±1.3 points)4.5%8.9%11.7%

In Mammoth Lakes, the share of homes built before 1980 is not measurably different from Mono County (49.4%).

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

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

Statewide, it ranks 619 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 (19.5%) and the share built before 1980 (51.1%).

Homes built before 1980 in places near Mammoth Lakes

Nearest places with a published estimate, compared with Mammoth Lakes
PlaceDistanceHomes built before 1980Compared with this place
Mammoth Lakes—51.1% (±6.2 points)—
Crowley Lake14 mi48.4% (±22.6 points)Not measurably different
Yosemite Valley33 mi12.0% (±42.9 points)Not measurably different
West Bishop33 mi70.6% (±12.4 points)Higher
Dixon Lane-MeadowCreek35 mi27.8% (±10.1 points)Lower
Bishop37 mi71.3% (±15.9 points)Higher
North Fork40 mi43.9% (±13.9 points)Not measurably different
Oakhurst40 mi49.2% (±10.4 points)Not measurably different
Ahwahnee44 mi39.6% (±18.4 points)Not measurably different

Nearby places with a measurably lower figure: Dixon Lane-MeadowCreek, CA (27.8%).

Nearby places with a measurably higher figure: West Bishop, CA (70.6%), Bishop, CA (71.3%).

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

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 Mammoth Lakes

How old are most homes in Mammoth Lakes?

51.1% of homes in Mammoth Lakes, CA were built before 1980 (2020–2024 American Community Survey).

Do homes in Mammoth Lakes 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 19.5% and 51.1% of homes in Mammoth Lakes were built before then.

Does a contractor need lead certification to work on older homes in Mammoth Lakes?

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

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 Mammoth Lakes town, California (place:45358, 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.

Figures last updated on .

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