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Apartments (Generic)Residential
Last sold for $1,794,000 on Aug 20, 2013

3820 SUMNER LN

SANTA ROSA, CA 95405
16
Beds
16
Baths
8,650 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.
0.2 ac
Lot SizeThe size of the land the home sits on, from county records.
1959
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
32
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$1,794,000 · Aug 20, 2013

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$25,686 (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.$2,249,573 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$617,683
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$1,631,890
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$2,205,590

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.24
25
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
68
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.6 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.6%
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.0.2 percent flood zone

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Apartments (Generic)
CountySONOMA
Lot (acres)The size of the land the home sits on, from county records.0.20
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
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(3)

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
Manzanita Elementary SchoolB
Elementary · Grades KG–6 · 0.7 mi
M
Montgomery High SchoolB
Middle · Grades 7–12 · 1.2 mi

District: Rincon Valley Union Elementary School District

Neighborhood · ZIP 95405These 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.59
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.89
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.549

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.30%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.2%
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.21,539
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,990 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$118,035
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$146,658
Average tempThe average temperature here across a full year.58°F
Annual precipHow much rain and melted snow falls here in a typical year.36 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

3820 Sumner Ln 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.

  • Among the largest homes in Santa Rosa 95405
  • Has a bigger lot than 74% of homes in Santa Rosa 95405
  • Older than 77% of homes in Sonoma County

How it measures up in Santa Rosa 95405

The dot is this home. The mark in the middle is the typical home in Santa Rosa 95405.

Living area8,650 ft²
SmallerTypical 1,576 ft²Bigger

Bigger than almost all homes nearby

Lot size0.2 ac
SmallerTypical 0.16 acBigger

Bigger than 74% of homes nearby

Year built1959
OlderTypical 1970Newer

Newer than 31% of homes nearby

How 3820 Sumner Ln ranks against every home in each area.
MeasureThis homeSanta Rosa 95405Sonoma County
Living areabigger than8,650 ft²almost all homesalmost all homes
Lot sizebigger than0.2 ac74% of homes61% of homes
Year builtnewer than195931% of homes23% of homes

About 3820 Sumner Ln

When did 3820 Sumner Ln, Santa Rosa, CA last sell?

3820 Sumner Ln, Santa Rosa, CA last sold on Aug 20, 2013 for $1,794,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 3820 Sumner Ln, Santa Rosa, CA?

3820 Sumner Ln, Santa Rosa, CA has 16 bedrooms, 16 bathrooms, 8,650 square feet of living space and a 0.20-acre lot.

When was 3820 Sumner Ln, Santa Rosa, CA built?

3820 Sumner Ln, Santa Rosa, CA was built in 1959, making it 67 years old. The building has 2 stories.

What schools serve 3820 Sumner Ln, Santa Rosa, CA?

3820 Sumner Ln, Santa Rosa, CA is assigned to Manzanita Elementary School (elementary), rated B; Montgomery High School (middle), rated B. All sit in Rincon Valley Union Elementary School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 3820 Sumner Ln, Santa Rosa, CA compare to other homes in Santa Rosa 95405?

Among the 7,162 homes in Santa Rosa 95405, it is bigger than almost all of them (8,650 ft² against a typical 1,576 ft²), its lot is bigger than 74% of them (0.2 ac against a typical 0.16 ac) and it is newer than 31% of them (1959 against a typical 1970). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 3820 Sumner Ln, Santa Rosa, CA?

The 2025 property tax bill for 3820 Sumner Ln, Santa Rosa, CA was $25,686. The county assessed it at $2,249,573.

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