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Single Family ResidenceResidential
$1,412,567$1,208 / ft²
TopHap EstimateOur estimate of what this home would sell for today, based on nearby sales, the home's size and features, and local price trends. It is a starting point, not an appraisal.· confidence 87How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026
Last sold for $915,000 on Feb 4, 2005

21 FORREST ST

MILL VALLEY, CA 94941
2
Beds
2.5
Baths
1,169 ft²
Living AreaTotal finished area of the structures, from county records. Some counties include shared space like hallways or a building gym, so it may not match a listing.
3,060 ft²
Lot SizeThe size of the land the home sits on, from county records.
1912
Year BuiltThe year the home was originally built, according to county records.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$1.4M
$1.2M low$1.6M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$915,000 · Feb 4, 2005

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$17,937 (2025)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$1,300,809 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$732,149
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$568,660
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,275,308

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Contemporary
CountyMARIN
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.1953
Lot (acres)The size of the land the home sits on, from county records.0.07
HeatingThe type of heating system in the home.Central
PoolWhether the property has a pool, and what kind, such as in-ground.No
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 300 ft²Patio · 300 ft²

Transaction History(10)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Old Mill Elementary SchoolA+
Elementary · Grades KG–5 · 0.4 mi
M
Mill Valley Middle SchoolA
Middle · Grades 6–8 · 1.1 mi
H
Tamalpais High SchoolA+
High · Grades 9–12 · 1.3 mi

District: Mill Valley Elementary School District

Neighborhood · ZIP 94941These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.

CrimeLocal crime compared with the rest of the country, where 100 is average. It reflects things like population density, income, and how crime gets reported.91
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.84
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.439

Index scale: 100 = US average (tick). Lower is better.

Homes occupiedThe share of homes here that someone lives in. The rest sit empty, including vacation and for-sale homes.93%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.37%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.3%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.30,767
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,462 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$194,124
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$248,795
Average tempThe average temperature here across a full year.57°F
Annual precipHow much rain and melted snow falls here in a typical year.42 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.78%

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Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

How this home compares

21 Forrest St measured against every home in its neighborhood, its ZIP code and its county, using county assessor records refreshed nightly. A home can stand out in one of those areas and look ordinary in another, because each one holds a different mix of homes.

  • Worth less than 83% of homes in Homestead Valley
  • Costs more per square foot than 86% of homes in Marin County
  • Smaller than 89% of homes in Homestead Valley
  • Has a smaller lot than 90% of homes in Homestead Valley
  • Older than 96% of homes in Marin County

What homes are worth in Mill Valley 94941

Each bar is how many homes fall in that price range. The marker is this home.

This home
$762K$5.6M

This home is worth more than 21% of homes in Mill Valley 94941.

How it measures up in Mill Valley 94941

The dot is this home. The mark in the middle is the typical home in Mill Valley 94941.

Estimated value$1,412,567
CheaperTypical $2,067,423Pricier

Pricier than 21% of homes nearby

Price per ft²$1208
CheaperTypical $1049Pricier

Pricier than 73% of homes nearby

Living area1,169 ft²
SmallerTypical 1,965 ft²Bigger

Bigger than 12% of homes nearby

Lot size3,060 ft²
SmallerTypical 0.19 acBigger

Bigger than 10% of homes nearby

Year built1912
OlderTypical 1959Newer

Newer than 6% of homes nearby

How 21 Forrest St ranks against every home in each area.
MeasureThis homeHomestead ValleyMill Valley 94941Marin County
Estimated valuepricier than$1,412,56717% of homes21% of homes51% of homes
Price per ft²pricier than$120860% of homes73% of homes86% of homes
Living areabigger than1,169 ft²11% of homes12% of homes15% of homes
Lot sizebigger than3,060 ft²10% of homes10% of homes14% of homes
Year builtnewer than191212% of homes6% of homes4% of homes

About 21 Forrest St

How much is 21 Forrest St, Mill Valley, CA worth?

The TopHap Estimate for 21 Forrest St, Mill Valley, CA is $1,412,567 as of Aug 30, 2026. The likely range is $1,233,088 to $1,592,046. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Forrest St, Mill Valley, CA last sell?

21 Forrest St, Mill Valley, CA last sold on Feb 4, 2005 for $915,000, according to the county's recorded deed. TopHap holds 6 recorded sales for this parcel.

How big is 21 Forrest St, Mill Valley, CA?

21 Forrest St, Mill Valley, CA has 2 bedrooms, 2.5 bathrooms, 1,169 square feet of living space and a 0.07-acre lot.

When was 21 Forrest St, Mill Valley, CA built?

21 Forrest St, Mill Valley, CA was built in 1912, making it 114 years old. It is a contemporary home.

What schools serve 21 Forrest St, Mill Valley, CA?

21 Forrest St, Mill Valley, CA is assigned to Old Mill Elementary School (elementary), rated A+; Mill Valley Middle School (middle), rated A; Tamalpais High School (high), rated A+. All sit in Mill Valley Elementary School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Forrest St, Mill Valley, CA compare to other homes in Mill Valley 94941?

Among the 10,554 homes in Mill Valley 94941, it is worth more than 21% of them ($1,412,567 against a typical $2,067,423), its price per square foot is higher than 73% of them ($1208 against a typical $1049), it is bigger than 12% of them (1,169 ft² against a typical 1,965 ft²), its lot is bigger than 10% of them (3,060 ft² against a typical 0.19 ac) and it is newer than 6% of them (1912 against a typical 1959). Measured against all of Marin County, it is worth more than 51% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 21 Forrest St, Mill Valley, CA?

The 2025 property tax bill for 21 Forrest St, Mill Valley, CA was $17,937. The county assessed it at $1,300,809.

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