Duplex (2 Units, Any Combination)Residential
Last sold for $715,000 on Sep 27, 2019
3975 BLACK OAK DR
SANTA ROSA, CA 95401
2
Beds
2
Baths
2,172 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.
1 ac
Lot SizeThe size of the land the home sits on, from county records.
1970
Year BuiltThe year the home was originally built, according to county records.
1
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.
2
ParkingThe number of parking spaces on the property, including the garage.
Valuation
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$715,000 · Sep 27, 2019
Tax & Assessment
Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$9,389 (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.$797,592 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$306,766
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$490,826
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$781,953
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.29
46
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.11 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.Duplex (2 Units, Any Combination)
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.1971
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
HeatingThe type of heating system in the home.None
CoolingThe type of cooling or air conditioning in the home.None
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(4)
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.
HEM
Piner High SchoolC
High · Grades 9–12 · 2.8 mi
Jack London Elementary SchoolC+
Elementary · Grades KG–6 · 3.4 mi
Hilliard Comstock Middle SchoolF
Middle · Grades 7–8 · 3.9 mi
District: Santa Rosa High School District
Neighborhood · ZIP 95401These 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.81
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 100.474
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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.18%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.14%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.4%
PopulationHow many people live in this area.37,940
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,831 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$88,042
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$111,933
Average tempThe average temperature here across a full year.58°F
Annual precipHow much rain and melted snow falls here in a typical year.37 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.78%
Owner Tools
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How this home compares
3975 Black Oak 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.
- Bigger than 88% of homes in Santa Rosa 95401
- Has a bigger lot than 89% of homes in Santa Rosa 95401
- Older than 66% of homes in Santa Rosa 95401
How it measures up in Santa Rosa 95401
The dot is this home. The mark in the middle is the typical home in Santa Rosa 95401.
Living area2,172 ft²
SmallerTypical 1,380 ft²Bigger
Bigger than 88% of homes nearby
Lot size1 ac
SmallerTypical 0.15 acBigger
Bigger than 89% of homes nearby
Year built1970
OlderTypical 1977Newer
Newer than 34% of homes nearby
| Measure | This home | Santa Rosa 95401 | Sonoma County |
|---|---|---|---|
| Living areabigger than | 2,172 ft² | 88% of homes | 79% of homes |
| Lot sizebigger than | 1 ac | 89% of homes | 84% of homes |
| Year builtnewer than | 1970 | 34% of homes | 35% of homes |
About 3975 Black Oak Dr
When did 3975 Black Oak Dr, Santa Rosa, CA last sell?
3975 Black Oak Dr, Santa Rosa, CA last sold on Sep 27, 2019 for $715,000, according to the county's recorded deed.
How big is 3975 Black Oak Dr, Santa Rosa, CA?
3975 Black Oak Dr, Santa Rosa, CA has 2 bedrooms, 2 bathrooms and 2,172 square feet of living space.
When was 3975 Black Oak Dr, Santa Rosa, CA built?
3975 Black Oak Dr, Santa Rosa, CA was built in 1970, making it 56 years old. The building has 1 story.
What schools serve 3975 Black Oak Dr, Santa Rosa, CA?
3975 Black Oak Dr, Santa Rosa, CA is assigned to Piner High School (high), rated C; Jack London Elementary School (elementary), rated C+; Hilliard Comstock Middle School (middle), rated F. All sit in Santa Rosa High School District. Attendance boundaries change — confirm with the district before relying on an assignment.
How does 3975 Black Oak Dr, Santa Rosa, CA compare to other homes in Santa Rosa 95401?
Among the 9,916 homes in Santa Rosa 95401, it is bigger than 88% of them (2,172 ft² against a typical 1,380 ft²), its lot is bigger than 89% of them (1 ac against a typical 0.15 ac) and it is newer than 34% of them (1970 against a typical 1977). These shares are recounted nightly from the full county assessor record for each area, not from active listings.
What are the property taxes on 3975 Black Oak Dr, Santa Rosa, CA?
The 2025 property tax bill for 3975 Black Oak Dr, Santa Rosa, CA was $9,389. The county assessed it at $797,592.
More homes on Black Oak Dr
- 3961 Black Oak Dr6 bd · 5 ba · 2,856 ft² · Sold $1.1M · May 2021
- 4033 Black Oak Dr$1.5M3 bd · 3.5 ba · 2,828 ft² · Sold $1.4M · Mar 2018
- 4030 Black Oak Dr$1.3M3 bd · 3.5 ba · 2,652 ft² · Sold $496K · Nov 1999
- 3939 Black Oak Dr$847K3 bd · 2 ba · 1,716 ft² · Sold Jan 1900
- 4032 Black Oak Dr$1.3M4 bd · 2 ba · 3,332 ft² · Sold Jan 1900
Closest homes
- 3961 Black Oak Dr166 ft · 6 bd · 5 ba · 2,856 ft² · Sold $1.1M · May 2021
- 1549 Olivet Rd$1.4M311 ft · 4 bd · 2.5 ba · 3,257 ft² · Sold Jan 1900
- 4033 Black Oak Dr$1.5M354 ft · 3 bd · 3.5 ba · 2,828 ft² · Sold $1.4M · Mar 2018
- 4030 Black Oak Dr$1.3M405 ft · 3 bd · 3.5 ba · 2,652 ft² · Sold $496K · Nov 1999
- 3939 Black Oak Dr$847K379 ft · 3 bd · 2 ba · 1,716 ft² · Sold Jan 1900
- 4032 Black Oak Dr$1.3M413 ft · 4 bd · 2 ba · 3,332 ft² · Sold Jan 1900
- 0 None0.1 mi · 2.45 ac · Sold Jan 1900
- 1655 Olivet Rd$915K0.1 mi · 3 bd · 2 ba · 2,064 ft² · Sold Jan 1900
More homes in Santa Rosa 95401
- 2347 Maria Luz Ct W$735K4 bd · 2.5 ba · 1,975 ft² · Sold $710K · Aug 2026
- 2434 San Pedro Dr$750K3 bd · 2 ba · 1,826 ft² · Sold $712K · Aug 2026
- 816 Warren Ln$550K3 bd · 1 ba · 909 ft² · Sold $550K · Aug 2026
- 492 Umland Dr$622K3 bd · 2 ba · 1,380 ft² · Sold $475K · Aug 2026
- 5533 Oak Meadow Dr$2M4 bd · 3.5 ba · 3,273 ft² · Sold $2M · Aug 2026
- 506 Juilliard Park Dr$565K2 bd · 1 ba · 728 ft² · Sold $565K · Aug 2026
- 1194 Wild Rose Dr$675K3 bd · 1 ba · 1,296 ft² · Sold $675K · Aug 2026
- 61 Westgate Cir3 bd · 2 ba · 1,616 ft² · Sold $415K · Aug 2026
- 457 Occidental Cir$350K2 bd · 2 ba · 984 ft² · Sold $350K · Aug 2026
- 1769 Olivet Rd$1.4M3 bd · 2.5 ba · 1,706 ft² · Sold $1.4M · Aug 2026
- 2291 Vista Del Sol Ct$735K3 bd · 2.5 ba · 1,506 ft² · Sold $735K · Aug 2026
- 2062 Laguna Rd5 bd · 3 ba · 3,088 ft² · Sold $1.7M · Aug 2026
Assigned schools
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