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Rural ResidenceResidential
$2,709,346$868 / 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 91How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026
Last sold for $2,650,000 on Feb 27, 2025

9817 MILL STATION RD

SEBASTOPOL, CA 95472
3
Beds
2.5
Baths
3,123 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.
2.27 ac
Lot SizeThe size of the land the home sits on, from county records.
1945
Year BuiltThe year the home was originally built, according to county records.
3
StoriesHow many floors the home has above ground.
6
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
5
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$2.7M
$2.5M low$2.9M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$2,650,000 · Feb 27, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$24,145 (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.$2,703,000 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$867,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$1,836,000
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$2,077,924

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.21
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
78
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.
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.Rural Residence
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
HeatingThe type of heating system in the home.Central
FireplaceWhether the home has a fireplace, and what kind.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(8)

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.

M
Brook Haven Middle SchoolB
Middle · Grades 5–8 · 2.3 mi
E
Park Side Elementary SchoolB+
Elementary · Grades KG–4 · 2.7 mi
H
Analy High SchoolB+
High · Grades 9–12 · 2.8 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%

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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

9817 Mill Station Rd 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 most valuable homes in Sebastopol 95472
  • Costs more per square foot than 94% of homes in Sonoma County
  • Bigger than 95% of homes in Sebastopol 95472
  • Has a bigger lot than 90% of homes in Sonoma County
  • Older than 90% of homes in Sonoma County

What homes are worth in Sebastopol 95472

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

This home
$497K$2.3M

This home is worth more than almost all homes in Sebastopol 95472.

How it measures up in Sebastopol 95472

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

Estimated value$2,709,346
CheaperTypical $1,017,818Pricier

Pricier than almost all homes nearby

Price per ft²$868
CheaperTypical $599Pricier

Pricier than 91% of homes nearby

Living area3,123 ft²
SmallerTypical 1,668 ft²Bigger

Bigger than 95% of homes nearby

Lot size2.27 ac
SmallerTypical 1.03 acBigger

Bigger than 74% of homes nearby

Year built1945
OlderTypical 1971Newer

Newer than 17% of homes nearby

How 9817 Mill Station Rd ranks against every home in each area.
MeasureThis homeSebastopol 95472Sonoma County
Estimated valuepricier than$2,709,346almost all homes98% of homes
Price per ft²pricier than$86891% of homes94% of homes
Living areabigger than3,123 ft²95% of homes95% of homes
Lot sizebigger than2.27 ac74% of homes90% of homes
Year builtnewer than194517% of homes10% of homes

About 9817 Mill Station Rd

How much is 9817 Mill Station Rd, Sebastopol, CA worth?

The TopHap Estimate for 9817 Mill Station Rd, Sebastopol, CA is $2,709,346 as of Sep 24, 2026. The likely range is $2,477,446 to $2,941,246. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 9817 Mill Station Rd, Sebastopol, CA last sell?

9817 Mill Station Rd, Sebastopol, CA last sold on Feb 27, 2025 for $2,650,000, according to the county's recorded deed.

How big is 9817 Mill Station Rd, Sebastopol, CA?

9817 Mill Station Rd, Sebastopol, CA has 3 bedrooms, 2.5 bathrooms and 3,123 square feet of living space.

When was 9817 Mill Station Rd, Sebastopol, CA built?

9817 Mill Station Rd, Sebastopol, CA was built in 1945, making it 81 years old. The building has 3 stories.

What schools serve 9817 Mill Station Rd, Sebastopol, CA?

9817 Mill Station Rd, Sebastopol, CA is assigned to Brook Haven Middle School (middle), rated B; Park Side Elementary School (elementary), rated B+; Analy High School (high), rated B+. All sit in West Sonoma County Union High School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 9817 Mill Station Rd, Sebastopol, CA compare to other homes in Sebastopol 95472?

Among the 9,231 homes in Sebastopol 95472, it is worth more than almost all of them ($2,709,346 against a typical $1,017,818), its price per square foot is higher than 91% of them ($868 against a typical $599), it is bigger than 95% of them (3,123 ft² against a typical 1,668 ft²), its lot is bigger than 74% of them (2.27 ac against a typical 1.03 ac) and it is newer than 17% of them (1945 against a typical 1971). Measured against all of Sonoma County, it is worth more than 98% 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 9817 Mill Station Rd, Sebastopol, CA?

The 2025 property tax bill for 9817 Mill Station Rd, Sebastopol, CA was $24,145. The county assessed it at $2,703,000.

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