Skip to content
Skip to content
TopHapOpen in map
Apartments (Generic)Residential
Last sold for $1,917,000 on Sep 2, 2025

421 WEST ST

SEBASTOPOL, CA 95472
2
Beds
1.5
Baths
5,156 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.
0.6 ac
Lot SizeThe size of the land the home sits on, from county records.
1973
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
16
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$1,917,000 · Sep 2, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$21,861 (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.$1,783,711 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$424,876
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$1,358,835
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,749,091

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.26
36
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
68
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
27
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.6 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.Apartments (Generic)
CountySONOMA
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.0.60
HeatingThe type of heating system in the home.Floor/Wall Furnace
CoolingThe type of cooling or air conditioning in the home.None
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.

H
Analy High SchoolA-
High · Grades 9–12 · 0.3 mi
E
Park Side Elementary SchoolA+
Elementary · Grades KG–4 · 0.3 mi
M
Brook Haven Middle SchoolC
Middle · Grades 5–8 · 0.5 mi

District: West Sonoma County Union High School District

Neighborhood · ZIP 95472These 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.95
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.87
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.345

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.94%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.27%
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.1.1%
PopulationHow many people live in this area.27,478
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.409 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$113,961
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$137,547
Average tempThe average temperature here across a full year.57°F
Annual precipHow much rain and melted snow falls here in a typical year.44 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.78%

Owner Tools

Do you own this home?
Claim this home

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

421 West 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.

  • Among the largest homes in Sebastopol 95472
  • Has a bigger lot than 80% of homes in Sonoma County

How it measures up in Sebastopol 95472

The dot is this home. The mark in the middle is the typical home in Sebastopol 95472.

Living area5,156 ft²
SmallerTypical 1,668 ft²Bigger

Bigger than almost all homes nearby

Lot size0.6 ac
SmallerTypical 1.01 acBigger

Bigger than 37% of homes nearby

Year built1973
OlderTypical 1971Newer

Newer than 55% of homes nearby

How 421 West St ranks against every home in each area.
MeasureThis homeSebastopol 95472Sonoma County
Living areabigger than5,156 ft²almost all homesalmost all homes
Lot sizebigger than0.6 ac37% of homes80% of homes
Year builtnewer than197355% of homes41% of homes

About 421 West St

When did 421 West St, Sebastopol, CA last sell?

421 West St, Sebastopol, CA last sold on Sep 2, 2025 for $1,917,000, according to the county's recorded deed.

How big is 421 West St, Sebastopol, CA?

421 West St, Sebastopol, CA has 2 bedrooms, 1.5 bathrooms, 5,156 square feet of living space and a 0.60-acre lot.

When was 421 West St, Sebastopol, CA built?

421 West St, Sebastopol, CA was built in 1973, making it 53 years old. The building has 2 stories.

What schools serve 421 West St, Sebastopol, CA?

421 West St, Sebastopol, CA is assigned to Analy High School (high), rated A-; Park Side Elementary School (elementary), rated A+; Brook Haven Middle School (middle), rated C. All sit in West Sonoma County Union High School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 421 West St, Sebastopol, CA compare to other homes in Sebastopol 95472?

Among the 9,230 homes in Sebastopol 95472, it is bigger than almost all of them (5,156 ft² against a typical 1,668 ft²), its lot is bigger than 37% of them (0.6 ac against a typical 1.01 ac) and it is newer than 55% of them (1973 against a typical 1971). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 421 West St, Sebastopol, CA?

The 2025 property tax bill for 421 West St, Sebastopol, CA was $21,861. The county assessed it at $1,783,711.

More homes on West St

Closest homes

More homes in Sebastopol 95472

Assigned schools

Explore the area

See this home in context

Open 421 West St on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map