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Single Family ResidenceResidential
$2,846,776$1,091 / 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 49How 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

123 PROSPECT AVE

SAUSALITO, CA 94965
4
Beds
3.5
Baths
2,609 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.
0.17 ac
Lot SizeThe size of the land the home sits on, from county records.
1953
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

$2.8M
$1.4M low$4.3M high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$44,218 (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.$3,669,686 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$2,201,812
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$1,467,874
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$3,597,735

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.1984
Lot (acres)The size of the land the home sits on, from county records.0.17
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 · 798 ft²

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 · 1.2 mi
H
Tamalpais High SchoolA+
High · Grades 9–12 · 3.6 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

123 Prospect Ave 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 87% of homes in Marin County
  • Costs more per square foot than 80% of homes in Marin County
  • Bigger than 83% of homes in Sausalito 94965
  • Has a bigger lot than 85% of homes in Old Town-Hurricane Gulch
  • Older than 72% of 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
$524K$5.8M

This home is worth more than 82% 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$2,846,776
CheaperTypical $1,445,847Pricier

Pricier than 82% of homes nearby

Price per ft²$1091
CheaperTypical $947Pricier

Pricier than 67% of homes nearby

Living area2,609 ft²
SmallerTypical 1,654 ft²Bigger

Bigger than 83% of homes nearby

Lot size0.17 ac
SmallerTypical 4,182 ft²Bigger

Bigger than 75% of homes nearby

Year built1953
OlderTypical 1965Newer

Newer than 29% of homes nearby

How 123 Prospect Ave ranks against every home in each area.
MeasureThis homeOld Town-Hurricane GulchSausalito 94965Marin County
Estimated valuepricier than$2,846,77682% of homes82% of homes87% of homes
Price per ft²pricier than$109149% of homes67% of homes80% of homes
Living areabigger than2,609 ft²78% of homes83% of homes79% of homes
Lot sizebigger than0.17 ac85% of homes75% of homes40% of homes
Year builtnewer than195342% of homes29% of homes28% of homes

About 123 Prospect Ave

How much is 123 Prospect Ave, Sausalito, CA worth?

The TopHap Estimate for 123 Prospect Ave, Sausalito, CA is $2,846,776 as of Aug 30, 2026. The likely range is $1,406,386 to $4,287,166. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 123 Prospect Ave, Sausalito, CA last sell?

123 Prospect Ave, Sausalito, CA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 123 Prospect Ave, Sausalito, CA?

123 Prospect Ave, Sausalito, CA has 4 bedrooms, 3.5 bathrooms, 2,609 square feet of living space and a 0.17-acre lot.

When was 123 Prospect Ave, Sausalito, CA built?

123 Prospect Ave, Sausalito, CA was built in 1953, making it 73 years old. It is a contemporary home.

What schools serve 123 Prospect Ave, Sausalito, CA?

123 Prospect Ave, 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 123 Prospect Ave, Sausalito, CA compare to other homes in Sausalito 94965?

Among the 3,817 homes in Sausalito 94965, it is worth more than 82% of them ($2,846,776 against a typical $1,445,847), its price per square foot is higher than 67% of them ($1091 against a typical $947), it is bigger than 83% of them (2,609 ft² against a typical 1,654 ft²), its lot is bigger than 75% of them (0.17 ac against a typical 4,182 ft²) and it is newer than 29% of them (1953 against a typical 1965). Measured against all of Marin County, it is worth more than 87% 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 123 Prospect Ave, Sausalito, CA?

The 2025 property tax bill for 123 Prospect Ave, Sausalito, CA was $44,218. The county assessed it at $3,669,686.

More homes on Prospect Ave

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Assigned schools

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