How old are the homes in Tamalpais-Homestead Valley, CA?

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

80.2% (±7.7 points) of the homes in Tamalpais-Homestead Valley, CA were built before 1980 (2020–2024 American Community Survey).

11.4% were built before 1940.

1.8% were built in 2010 or later.

Figures last updated on November 12, 2026.

Built before 1980: 80.2% (±7.7 points)
Built before 1940: 11.4%
Built 2010 or later: 1.8%

When the homes in Tamalpais-Homestead Valley were built

Housing units by year structure built, 2020–2024
Year built	Tamalpais-Homestead Valley	Marin County	California	United States
2020 or later	0.4% (±0.4 points)	0.3%	1.3%	2.0%
2010 to 2019	1.4% (±1.2 points)	2.6%	6.5%	9.4%
2000 to 2009	2.8% (±1.8 points)	5.2%	11.2%	13.6%
1990 to 1999	4.2% (±2.1 points)	7.0%	10.1%	12.4%
1980 to 1989	11.1% (±3.4 points)	10.1%	14.9%	12.9%
1970 to 1979	22.8% (±3.8 points)	19.0%	16.8%	14.2%
1960 to 1969	16.5% (±3.8 points)	18.7%	12.5%	9.9%
1950 to 1959	19.7% (±3.3 points)	18.3%	12.4%	9.5%
1940 to 1949	9.8% (±3.5 points)	6.2%	5.4%	4.4%
1939 or earlier	11.4% (±2.7 points)	12.6%	8.9%	11.7%

In Tamalpais-Homestead Valley, the share of homes built before 1980 is not measurably different from Marin County (74.8%).

It is also higher than in California (56.0%).

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

In Marin County, Tamalpais-Homestead Valley ranks 11 of 24 places with a published estimate, from highest to lowest share of homes built before 1980.

Statewide, it ranks 141 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 (57.4%) and the share built before 1980 (80.2%).

Homes built before 1980 in places near Tamalpais-Homestead Valley

Nearest places with a published estimate, compared with Tamalpais-Homestead Valley
Place	Distance	Homes built before 1980	Compared with this place
Tamalpais-Homestead Valley	—	80.2% (±7.7 points)	—
Marin City	1.4 mi	71.8% (±16.3 points)	Not measurably different
Strawberry	1.8 mi	75.9% (±11.8 points)	Not measurably different
Mill Valley	2.0 mi	79.8% (±8.3 points)	Not measurably different
Alto	2.1 mi	69.8% (±31.9 points)	Not measurably different
Sausalito	2.9 mi	85.2% (±8.6 points)	Not measurably different
Belvedere	3.7 mi	81.7% (±11.9 points)	Not measurably different
Corte Madera	4.0 mi	76.3% (±10.6 points)	Not measurably different
Kentfield	4.1 mi	89.6% (±9.9 points)	Not measurably different

None of the nearby places differs measurably from this one on this figure.

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

Homes built before 1980 across Marin County, place by place

Rank	Place	Homes built before 1980
5	Fairfax	87.8% (±11.6 points)
6	Sleepy Hollow	86.5% (±18.0 points)
7	San Anselmo	86.3% (±8.4 points)
8	Sausalito	85.2% (±8.6 points)
9	Ross	83.2% (±12.4 points)
10	Belvedere	81.7% (±11.9 points)
11	Tamalpais-Homestead Valley	80.2% (±7.7 points)
12	Mill Valley	79.8% (±8.3 points)
13	Lagunitas-Forest Knolls	77.7% (±23.7 points)
14	Tiburon	77.3% (±10.7 points)
15	Bolinas	77.1% (±15.3 points)
16	Corte Madera	76.3% (±10.6 points)
17	Strawberry	75.9% (±11.8 points)

Showing 13 of 24 places in Marin County, ranked from highest to lowest.

Tamalpais-Homestead Valley 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 Tamalpais-Homestead Valley

How old are most homes in Tamalpais-Homestead Valley?

80.2% of homes in Tamalpais-Homestead Valley, CA were built before 1980 (2020–2024 American Community Survey).

Do homes in Tamalpais-Homestead Valley 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 57.4% and 80.2% of homes in Tamalpais-Homestead Valley were built before then.

Does a contractor need lead certification to work on older homes in Tamalpais-Homestead Valley?

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 — Tamalpais-Homestead Valley CDP, 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 Tamalpais-Homestead Valley CDP, California (place:77805, 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.