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Single Family ResidenceResidential
$901,651$371 / 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 Aug 30, 2026
Last sold for $875,000 on May 31, 2019

321 WINDSOR RIVER RD

WINDSOR, CA 95492
3
Beds
2.5
Baths
2,431 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.
0.2 ac
Lot SizeThe size of the land the home sits on, from county records.
1925
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
7
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$902K
$817K low$986K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$875,000 · May 31, 2019

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$11,589 (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.$995,594 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$398,237
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$597,357
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$976,074

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.17
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
58
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.Single Family 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
Lot (acres)The size of the land the home sits on, from county records.0.20
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
HeatingThe type of heating system in the home.None
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(10)

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
Windsor High SchoolA-
High · Grades 9–12 · 0.4 mi
E
Cali Calmecac Language AcademyC+
Elementary · Grades KG–8 · 0.7 mi

District: Windsor Unified School District

Neighborhood · ZIP 95492These 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.49
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.83
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.515

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.24%
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.1.3%
PopulationHow many people live in this area.26,627
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,454 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$122,176
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$150,769
Average tempThe average temperature here across a full year.58°F
Annual precipHow much rain and melted snow falls here in a typical year.38 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

321 Windsor River 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.

  • Worth more than 69% of homes in Windsor 95492
  • Costs less per square foot than 95% of homes in Windsor 95492
  • Bigger than 87% of homes in Windsor 95492
  • Has a bigger lot than 71% of homes in Windsor 95492
  • Among the oldest homes in Windsor 95492

What homes are worth in Windsor 95492

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

This home
$487K$1.6M

This home is worth more than 69% of homes in Windsor 95492.

How it measures up in Windsor 95492

The dot is this home. The mark in the middle is the typical home in Windsor 95492.

Estimated value$901,651
CheaperTypical $813,488Pricier

Pricier than 69% of homes nearby

Price per ft²$371
CheaperTypical $465Pricier

Pricier than 5% of homes nearby

Living area2,431 ft²
SmallerTypical 1,808 ft²Bigger

Bigger than 87% of homes nearby

Lot size0.2 ac
SmallerTypical 0.15 acBigger

Bigger than 71% of homes nearby

Year built1925
OlderTypical 1990Newer

Older than almost all homes nearby

How 321 Windsor River Rd ranks against every home in each area.
MeasureThis homeWindsor 95492Sonoma County
Estimated valuepricier than$901,65169% of homes67% of homes
Price per ft²pricier than$3715% of homes10% of homes
Living areabigger than2,431 ft²87% of homes86% of homes
Lot sizebigger than0.2 ac71% of homes62% of homes
Year builtnewer than1925almost no homes5% of homes

About 321 Windsor River Rd

How much is 321 Windsor River Rd, Windsor, CA worth?

The TopHap Estimate for 321 Windsor River Rd, Windsor, CA is $901,651 as of Aug 30, 2026. The likely range is $816,924 to $986,378. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 321 Windsor River Rd, Windsor, CA last sell?

321 Windsor River Rd, Windsor, CA last sold on May 31, 2019 for $875,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 321 Windsor River Rd, Windsor, CA?

321 Windsor River Rd, Windsor, CA has 3 bedrooms, 2.5 bathrooms, 2,431 square feet of living space and a 0.20-acre lot.

When was 321 Windsor River Rd, Windsor, CA built?

321 Windsor River Rd, Windsor, CA was built in 1925, making it 101 years old. The building has 2 stories.

What schools serve 321 Windsor River Rd, Windsor, CA?

321 Windsor River Rd, Windsor, CA is assigned to Windsor High School (high), rated A-; Cali Calmecac Language Academy (elementary), rated C+. All sit in Windsor Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 321 Windsor River Rd, Windsor, CA compare to other homes in Windsor 95492?

Among the 8,832 homes in Windsor 95492, it is worth more than 69% of them ($901,651 against a typical $813,488), its price per square foot is higher than 5% of them ($371 against a typical $465), it is bigger than 87% of them (2,431 ft² against a typical 1,808 ft²), its lot is bigger than 71% of them (0.2 ac against a typical 0.15 ac) and it is newer than almost none of them (1925 against a typical 1990). Measured against all of Sonoma County, it is worth more than 67% 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 321 Windsor River Rd, Windsor, CA?

The 2025 property tax bill for 321 Windsor River Rd, Windsor, CA was $11,589. The county assessed it at $995,594.

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