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Duplex (2 Units, Any Combination)Residential

911 ST HELENA AVE

SANTA ROSA, CA 95404
2
Beds
1
Baths
798 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.
0.17 ac
Lot SizeThe size of the land the home sits on, from county records.
1915
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
2
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,670 (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.$681,591 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$217,526
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$464,065
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$668,227

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.25
52
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
47
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.16 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)
StyleThe architectural style of the home, such as ranch or colonial.Custom Design
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.1935
Lot (acres)The size of the land the home sits on, from county records.0.17
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
HeatingThe type of heating system in the home.Floor/Wall Furnace
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(16)

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
Proctor Terrace Elementary SchoolB
Elementary · Grades KG–6 · 0.3 mi
M
Santa Rosa Middle SchoolD
Middle · Grades 7–8 · 0.5 mi
H
Santa Rosa High SchoolB-
High · Grades 9–12 · 0.9 mi

District: Santa Rosa Elementary School District

Neighborhood · ZIP 95404These 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.102
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.82
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.598

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.28%
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.1.2%
PopulationHow many people live in this area.43,241
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.541 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$104,299
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$140,649
Average tempThe average temperature here across a full year.58°F
Annual precipHow much rain and melted snow falls here in a typical year.43 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

911 St Helena Ave 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.

  • Smaller than 96% of homes in Santa Rosa 95404
  • Has a bigger lot than 76% of homes in Junior College
  • Older than 97% of homes in Sonoma County

How it measures up in Santa Rosa 95404

The dot is this home. The mark in the middle is the typical home in Santa Rosa 95404.

Living area798 ft²
SmallerTypical 1,696 ft²Bigger

Bigger than 4% of homes nearby

Lot size0.17 ac
SmallerTypical 0.18 acBigger

Bigger than 49% of homes nearby

Year built1915
OlderTypical 1971Newer

Newer than 5% of homes nearby

How 911 St Helena Ave ranks against every home in each area.
MeasureThis homeJunior CollegeSanta Rosa 95404Sonoma County
Living areabigger than798 ft²5% of homes4% of homes4% of homes
Lot sizebigger than0.17 ac76% of homes49% of homes53% of homes
Year builtnewer than191513% of homes5% of homes3% of homes

About 911 St Helena Ave

When did 911 St Helena Ave, Santa Rosa, CA last sell?

911 St Helena Ave, Santa Rosa, CA last sold on Dec 14, 2017, according to the county's recorded deed.

How big is 911 St Helena Ave, Santa Rosa, CA?

911 St Helena Ave, Santa Rosa, CA has 2 bedrooms, 1 bathrooms, 798 square feet of living space and a 0.17-acre lot.

When was 911 St Helena Ave, Santa Rosa, CA built?

911 St Helena Ave, Santa Rosa, CA was built in 1915, making it 111 years old. It is a custom design home. The building has 1 story.

What schools serve 911 St Helena Ave, Santa Rosa, CA?

911 St Helena Ave, Santa Rosa, CA is assigned to Proctor Terrace Elementary School (elementary), rated B; Santa Rosa Middle School (middle), rated D; Santa Rosa High School (high), rated B-. All sit in Santa Rosa Elementary School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 911 St Helena Ave, Santa Rosa, CA compare to other homes in Santa Rosa 95404?

Among the 12,324 homes in Santa Rosa 95404, it is bigger than 4% of them (798 ft² against a typical 1,696 ft²), its lot is bigger than 49% of them (0.17 ac against a typical 0.18 ac) and it is newer than 5% of them (1915 against a typical 1971). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 911 St Helena Ave, Santa Rosa, CA?

The 2025 property tax bill for 911 St Helena Ave, Santa Rosa, CA was $7,670. The county assessed it at $681,591.

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