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Single Family ResidenceResidential
$861,840$444 / 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 93How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026

538 BLACKSTONE CT

SANTA ROSA, CA 95409
3
Beds
3 / 1
Baths
1,942 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.
0.24 ac
Lot SizeThe size of the land the home sits on, from county records.
1968
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
8
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$862K
$801K low$923K high
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$141,840
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$113,472
Loan-to-ValueHow much is still owed on the home compared to what it is worth. 80% means loans equal 80% of our estimate, so it shifts when the estimate does.91%
1st MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$310,000
REDWOOD CU · recorded May 29, 2018
2nd MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$310,000
REDWOOD CU
3rd MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$100,000

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,960 (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.$246,703 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$91,389
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$155,314
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$246,703

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.18
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
65
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.1970
Lot (acres)The size of the land the home sits on, from county records.0.24
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
HeatingThe type of heating system in the home.None
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No

Foreclosure Filings(1)

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Binkley Elementary Charter SchoolA
Elementary · Grades KG–6 · 0.1 mi
H
Maria Carrillo High SchoolA+
High · Grades 9–12 · 0.4 mi
M
Spring Lake Middle SchoolB-
Middle · Grades 7–8 · 0.5 mi

District: Santa Rosa High School District

Neighborhood · ZIP 95409These 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.105
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 100.459

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.28%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.0%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.24,776
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.847 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$99,190
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$126,830
Average tempThe average temperature here across a full year.58°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%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Owner occupied
Company ownedWhether the owner is a company or trust rather than a person.No

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

538 Blackstone Ct 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.

  • Costs less per square foot than 66% of homes in Sonoma County
  • Bigger than 70% of homes in Sonoma County
  • Has a bigger lot than 69% of homes in Santa Rosa 95409
  • Older than 77% of homes in Santa Rosa 95409

What homes are worth in Santa Rosa 95409

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

This home
$394K$1.6M

This home is worth more than 62% of homes in Santa Rosa 95409.

How it measures up in Santa Rosa 95409

The dot is this home. The mark in the middle is the typical home in Santa Rosa 95409.

Estimated value$861,840
CheaperTypical $786,280Pricier

Pricier than 62% of homes nearby

Price per ft²$444
CheaperTypical $463Pricier

Pricier than 37% of homes nearby

Living area1,942 ft²
SmallerTypical 1,665 ft²Bigger

Bigger than 67% of homes nearby

Lot size0.24 ac
SmallerTypical 0.18 acBigger

Bigger than 69% of homes nearby

Year built1968
OlderTypical 1976Newer

Newer than 23% of homes nearby

How 538 Blackstone Ct ranks against every home in each area.
MeasureThis homeSanta Rosa 95409Sonoma County
Estimated valuepricier than$861,84062% of homes63% of homes
Price per ft²pricier than$44437% of homes34% of homes
Living areabigger than1,942 ft²67% of homes70% of homes
Lot sizebigger than0.24 ac69% of homes66% of homes
Year builtnewer than196823% of homes33% of homes

About 538 Blackstone Ct

How much is 538 Blackstone Ct, Santa Rosa, CA worth?

The TopHap Estimate for 538 Blackstone Ct, Santa Rosa, CA is $861,840 as of Jul 14, 2026. The likely range is $800,805 to $922,875. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 538 Blackstone Ct, Santa Rosa, CA last sell?

538 Blackstone Ct, Santa Rosa, CA last sold on May 1, 1985, according to the county's recorded deed.

How big is 538 Blackstone Ct, Santa Rosa, CA?

538 Blackstone Ct, Santa Rosa, CA has 3 bedrooms, 3 bathrooms, 1,942 square feet of living space and a 0.24-acre lot.

When was 538 Blackstone Ct, Santa Rosa, CA built?

538 Blackstone Ct, Santa Rosa, CA was built in 1968, making it 58 years old. The building has 2 stories.

What schools serve 538 Blackstone Ct, Santa Rosa, CA?

538 Blackstone Ct, Santa Rosa, CA is assigned to Binkley Elementary Charter School (elementary), rated A; Maria Carrillo High School (high), rated A+; Spring Lake Middle School (middle), rated B-. All sit in Santa Rosa High School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 538 Blackstone Ct, Santa Rosa, CA compare to other homes in Santa Rosa 95409?

Among the 10,277 homes in Santa Rosa 95409, it is worth more than 62% of them ($861,840 against a typical $786,280), its price per square foot is higher than 37% of them ($444 against a typical $463), it is bigger than 67% of them (1,942 ft² against a typical 1,665 ft²), its lot is bigger than 69% of them (0.24 ac against a typical 0.18 ac) and it is newer than 23% of them (1968 against a typical 1976). Measured against all of Sonoma County, it is worth more than 63% 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 538 Blackstone Ct, Santa Rosa, CA?

The 2025 property tax bill for 538 Blackstone Ct, Santa Rosa, CA was $2,960. The county assessed it at $246,703.

Closest homes

More homes in Santa Rosa 95409

Assigned schools

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