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Multi-Family Dwellings (Generic, Any Combination)Residential

1 LOWER ALCATRAZ PL

MILL VALLEY, CA 94941
0
Baths
4,236 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.
0.18 ac
Lot SizeThe size of the land the home sits on, from county records.
1965
Year BuiltThe year the home was originally built, according to county records.

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$12,328 (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.$380,091 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$98,066
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$282,025
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$372,677

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.90 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.Multi-Family Dwellings (Generic, Any Combination)
CountyMARIN
Lot (acres)The size of the land the home sits on, from county records.0.18
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(3)

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 · 0.3 mi
M
Mill Valley Middle SchoolA+
Middle · Grades 6–8 · 1.3 mi
H
Tamalpais High SchoolA
High · Grades 9–12 · 1.6 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

1 Lower Alcatraz Pl 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.

  • Bigger than 97% of homes in Mill Valley 94941
  • Has a smaller lot than 72% of homes in Blithedale Canyon
  • Newer than 77% of homes in Blithedale Canyon

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.

Living area4,236 ft²
SmallerTypical 1,960 ft²Bigger

Bigger than 97% of homes nearby

Lot size0.18 ac
SmallerTypical 0.19 acBigger

Bigger than 47% of homes nearby

Year built1965
OlderTypical 1959Newer

Newer than 64% of homes nearby

How 1 Lower Alcatraz Pl ranks against every home in each area.
MeasureThis homeBlithedale CanyonMill Valley 94941Marin County
Living areabigger than4,236 ft²94% of homes97% of homes96% of homes
Lot sizebigger than0.18 ac28% of homes47% of homes50% of homes
Year builtnewer than196577% of homes64% of homes57% of homes

About 1 Lower Alcatraz Pl

When did 1 Lower Alcatraz Pl, Mill Valley, CA last sell?

1 Lower Alcatraz Pl, Mill Valley, CA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 1 Lower Alcatraz Pl, Mill Valley, CA?

1 Lower Alcatraz Pl, Mill Valley, CA has 4,236 square feet of living space and a 0.18-acre lot.

When was 1 Lower Alcatraz Pl, Mill Valley, CA built?

1 Lower Alcatraz Pl, Mill Valley, CA was built in 1965, making it 61 years old.

What schools serve 1 Lower Alcatraz Pl, Mill Valley, CA?

1 Lower Alcatraz Pl, 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 1 Lower Alcatraz Pl, Mill Valley, CA compare to other homes in Mill Valley 94941?

Among the 10,554 homes in Mill Valley 94941, it is bigger than 97% of them (4,236 ft² against a typical 1,960 ft²), its lot is bigger than 47% of them (0.18 ac against a typical 0.19 ac) and it is newer than 64% of them (1965 against a typical 1959). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 1 Lower Alcatraz Pl, Mill Valley, CA?

The 2025 property tax bill for 1 Lower Alcatraz Pl, Mill Valley, CA was $12,328. The county assessed it at $380,091.

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