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Single Family ResidenceResidential
$1,020,206$508 / 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 95How 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 $103,000 on Sep 6, 1996

509 SANDRETTO DR

SEBASTOPOL, CA 95472
3
Beds
2.5
Baths
2,009 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.
0.94 ac
Lot SizeThe size of the land the home sits on, from county records.
1998
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
3
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$1M
$968K low$1.1M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$103,000 · Sep 6, 1996

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,250 (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.$447,969 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$184,130
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$263,839
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$439,186

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.
79
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
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.0.94
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
HeatingThe type of heating system in the home.Central
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(12)

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
Apple Blossom SchoolB+
Elementary · Grades KG–5 · 2.2 mi
M
Twin Hills Charter Middle SchoolA
Middle · Grades 6–8 · 3.2 mi
H
Analy High SchoolA-
High · Grades 9–12 · 3.6 mi

District: Twin Hills Union Elementary 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

509 Sandretto 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 75% of homes in Sonoma County
  • Costs less per square foot than 79% of homes in Sebastopol 95472
  • Bigger than 73% of homes in Sonoma County
  • Has a bigger lot than 83% of homes in Sonoma County
  • Newer than 93% of homes in Sebastopol 95472

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
$488K$2.3M

This home is worth more than 50% of 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$1,020,206
CheaperTypical $1,017,845Pricier

Pricier than 50% of homes nearby

Price per ft²$508
CheaperTypical $611Pricier

Pricier than 21% of homes nearby

Living area2,009 ft²
SmallerTypical 1,671 ft²Bigger

Bigger than 69% of homes nearby

Lot size0.94 ac
SmallerTypical 1.03 acBigger

Bigger than 45% of homes nearby

Year built1998
OlderTypical 1971Newer

Newer than 93% of homes nearby

How 509 Sandretto Dr ranks against every home in each area.
MeasureThis homeSebastopol 95472Sonoma County
Estimated valuepricier than$1,020,20650% of homes75% of homes
Price per ft²pricier than$50821% of homes56% of homes
Living areabigger than2,009 ft²69% of homes73% of homes
Lot sizebigger than0.94 ac45% of homes83% of homes
Year builtnewer than199893% of homes82% of homes

About 509 Sandretto Dr

How much is 509 Sandretto Dr, Sebastopol, CA worth?

The TopHap Estimate for 509 Sandretto Dr, Sebastopol, CA is $1,020,206 as of Sep 24, 2026. The likely range is $968,202 to $1,072,210. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 509 Sandretto Dr, Sebastopol, CA last sell?

509 Sandretto Dr, Sebastopol, CA last sold on Sep 6, 1996 for $103,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 509 Sandretto Dr, Sebastopol, CA?

509 Sandretto Dr, Sebastopol, CA has 3 bedrooms, 2.5 bathrooms, 2,009 square feet of living space and a 0.94-acre lot.

When was 509 Sandretto Dr, Sebastopol, CA built?

509 Sandretto Dr, Sebastopol, CA was built in 1998, making it 28 years old. It is a custom design home. The building has 1 story.

What schools serve 509 Sandretto Dr, Sebastopol, CA?

509 Sandretto Dr, Sebastopol, CA is assigned to Apple Blossom School (elementary), rated B+; Twin Hills Charter Middle School (middle), rated A; Analy High School (high), rated A-. All sit in Twin Hills Union Elementary School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 509 Sandretto Dr, Sebastopol, CA compare to other homes in Sebastopol 95472?

Among the 9,230 homes in Sebastopol 95472, it is worth more than 50% of them ($1,020,206 against a typical $1,017,845), its price per square foot is higher than 21% of them ($508 against a typical $611), it is bigger than 69% of them (2,009 ft² against a typical 1,671 ft²), its lot is bigger than 45% of them (0.94 ac against a typical 1.03 ac) and it is newer than 93% of them (1998 against a typical 1971). Measured against all of Sonoma County, it is worth more than 75% 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 509 Sandretto Dr, Sebastopol, CA?

The 2025 property tax bill for 509 Sandretto Dr, Sebastopol, CA was $5,250. The county assessed it at $447,969.

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