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Single Family ResidenceResidential
$4,398,308$1,235 / 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 76How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026
Last sold for $3,000,000 on Jan 24, 2020

121 SOUTH ST

SAUSALITO, CA 94965
5
Beds
4
Baths
3,560 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.
0.14 ac
Lot SizeThe size of the land the home sits on, from county records.
1891
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

$4.4M
$3.3M low$5.4M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$3,000,000 · Jan 24, 2020

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$45,188 (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.$3,465,566 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$2,007,900
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$1,457,666
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$3,397,622

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.197 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.minimal

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
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.1990
Lot (acres)The size of the land the home sits on, from county records.0.14
HeatingThe type of heating system in the home.Central
FireplaceWhether the home has a fireplace, and what kind.Yes
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 · 169 ft²Patio · 169 ft²

Transaction History(12)

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
Dr. Martin Luther King Jr. AcademyB
Elementary · Grades KG–8 · 1.7 mi
H
Tamalpais High SchoolA
High · Grades 9–12 · 4.1 mi

District: Sausalito Elementary School District

Neighborhood · ZIP 94965These 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.149
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.85
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.458

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.91%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.32%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.5%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.11,048
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.525 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$138,294
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$185,477
Average tempThe average temperature here across a full year.57°F
Annual precipHow much rain and melted snow falls here in a typical year.47 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

121 South 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 more than 98% of homes in Old Town-Hurricane Gulch
  • Costs more per square foot than 87% of homes in Marin County
  • Bigger than 94% of homes in Old Town-Hurricane Gulch
  • Has a bigger lot than 72% of homes in Old Town-Hurricane Gulch
  • Among the oldest homes in Marin County

What homes are worth in Sausalito 94965

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

This home
$514K$5.6M

This home is worth more than 95% of homes in Sausalito 94965.

How it measures up in Sausalito 94965

The dot is this home. The mark in the middle is the typical home in Sausalito 94965.

Estimated value$4,398,308
CheaperTypical $1,458,669Pricier

Pricier than 95% of homes nearby

Price per ft²$1235
CheaperTypical $955Pricier

Pricier than 81% of homes nearby

Living area3,560 ft²
SmallerTypical 1,651 ft²Bigger

Bigger than 94% of homes nearby

Lot size0.14 ac
SmallerTypical 4,225 ft²Bigger

Bigger than 63% of homes nearby

Year built1891
OlderTypical 1965Newer

Older than almost all homes nearby

How 121 South St ranks against every home in each area.
MeasureThis homeOld Town-Hurricane GulchSausalito 94965Marin County
Estimated valuepricier than$4,398,30898% of homes95% of homes95% of homes
Price per ft²pricier than$123575% of homes81% of homes87% of homes
Living areabigger than3,560 ft²94% of homes94% of homes93% of homes
Lot sizebigger than0.14 ac72% of homes63% of homes28% of homes
Year builtnewer than1891almost no homesalmost no homesalmost no homes

About 121 South St

How much is 121 South St, Sausalito, CA worth?

The TopHap Estimate for 121 South St, Sausalito, CA is $4,398,308 as of Oct 21, 2026. The likely range is $3,349,814 to $5,446,802. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 121 South St, Sausalito, CA last sell?

121 South St, Sausalito, CA last sold on Jan 24, 2020 for $3,000,000, according to the county's recorded deed. TopHap holds 4 recorded sales for this parcel.

How big is 121 South St, Sausalito, CA?

121 South St, Sausalito, CA has 5 bedrooms, 4 bathrooms, 3,560 square feet of living space and a 0.14-acre lot.

When was 121 South St, Sausalito, CA built?

121 South St, Sausalito, CA was built in 1891, making it 135 years old.

What schools serve 121 South St, Sausalito, CA?

121 South St, Sausalito, CA is assigned to Dr. Martin Luther King Jr. Academy (elementary), rated B; Tamalpais High School (high), rated A. All sit in Sausalito Elementary School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 121 South St, Sausalito, CA compare to other homes in Sausalito 94965?

Among the 3,820 homes in Sausalito 94965, it is worth more than 95% of them ($4,398,308 against a typical $1,458,669), its price per square foot is higher than 81% of them ($1235 against a typical $955), it is bigger than 94% of them (3,560 ft² against a typical 1,651 ft²), its lot is bigger than 63% of them (0.14 ac against a typical 4,225 ft²) and it is newer than almost none of them (1891 against a typical 1965). Measured against all of Marin County, it is worth more than 95% 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 121 South St, Sausalito, CA?

The 2025 property tax bill for 121 South St, Sausalito, CA was $45,188. The county assessed it at $3,465,566.

More homes on South St

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