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Single Family ResidenceResidential
$1,349,249$637 / 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 94How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026

817 COLLEEN DR

WINDSOR, CA 95492
4
Beds
3
Baths
2,119 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.
0.52 ac
Lot SizeThe size of the land the home sits on, from county records.
1978
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
4
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$1.3M
$1.3M low$1.4M high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,878 (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.$312,343 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$97,604
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$214,739
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$306,220

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.28
43
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
72
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.10 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.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Custom Design
CountySONOMA
Lot (acres)The size of the land the home sits on, from county records.0.52
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.None
CoolingThe type of cooling or air conditioning in the home.Yes
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(1)

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
Cali Calmecac Language AcademyC
Elementary · Grades KG–8 · 0.3 mi
H
Windsor High SchoolB-
High · Grades 9–12 · 0.8 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%

Owner Tools

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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

817 Colleen Dr 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 96% of homes in Windsor 95492
  • Costs more per square foot than 89% of homes in Windsor 95492
  • Bigger than 77% of homes in Sonoma County
  • Has a bigger lot than 89% of homes in Windsor 95492
  • Older than 87% of 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
$429K$1.7M

This home is worth more than 96% 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$1,349,249
CheaperTypical $796,920Pricier

Pricier than 96% of homes nearby

Price per ft²$637
CheaperTypical $457Pricier

Pricier than 89% of homes nearby

Living area2,119 ft²
SmallerTypical 1,795 ft²Bigger

Bigger than 76% of homes nearby

Lot size0.52 ac
SmallerTypical 0.15 acBigger

Bigger than 89% of homes nearby

Year built1978
OlderTypical 1990Newer

Newer than 13% of homes nearby

How 817 Colleen Dr ranks against every home in each area.
MeasureThis homeWindsor 95492Sonoma County
Estimated valuepricier than$1,349,24996% of homes88% of homes
Price per ft²pricier than$63789% of homes81% of homes
Living areabigger than2,119 ft²76% of homes77% of homes
Lot sizebigger than0.52 ac89% of homes78% of homes
Year builtnewer than197813% of homes51% of homes

About 817 Colleen Dr

How much is 817 Colleen Dr, Windsor, CA worth?

The TopHap Estimate for 817 Colleen Dr, Windsor, CA is $1,349,249 as of Oct 21, 2026. The likely range is $1,269,105 to $1,429,393. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 817 Colleen Dr, Windsor, CA last sell?

817 Colleen Dr, Windsor, CA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 817 Colleen Dr, Windsor, CA?

817 Colleen Dr, Windsor, CA has 4 bedrooms, 3 bathrooms, 2,119 square feet of living space and a 0.52-acre lot.

When was 817 Colleen Dr, Windsor, CA built?

817 Colleen Dr, Windsor, CA was built in 1978, making it 48 years old. It is a custom design home. The building has 1 story.

What schools serve 817 Colleen Dr, Windsor, CA?

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

How does 817 Colleen Dr, Windsor, CA compare to other homes in Windsor 95492?

Among the 8,828 homes in Windsor 95492, it is worth more than 96% of them ($1,349,249 against a typical $796,920), its price per square foot is higher than 89% of them ($637 against a typical $457), it is bigger than 76% of them (2,119 ft² against a typical 1,795 ft²), its lot is bigger than 89% of them (0.52 ac against a typical 0.15 ac) and it is newer than 13% of them (1978 against a typical 1990). Measured against all of Sonoma County, it is worth more than 88% 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 817 Colleen Dr, Windsor, CA?

The 2025 property tax bill for 817 Colleen Dr, Windsor, CA was $3,878. The county assessed it at $312,343.

More homes on Colleen Dr

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