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CondominiumResidential
$421,810$416 / 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 97How 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
Last sold for $421,500 on May 19, 2025

3840 MARTINA AVE

SANTA ROSA, CA 95407
Building report
2
Beds
2.5
Baths
1,013 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 ft²
Lot SizeThe size of the land the home sits on, from county records.
2006
Year BuiltThe year the home was originally built, according to county records.
2
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.

Valuation

$422K
$408K low$436K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$421,500 · May 19, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,125 (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.$429,930 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$171,870
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$258,060
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$175,837

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.28
56
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
60
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.19 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.Condominium
StyleThe architectural style of the home, such as ranch or colonial.Custom Design
CountySONOMA
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(8)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

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
Wright CharterD
Elementary · Grades KG–8 · 0.7 mi
H
Elsie Allen High SchoolD
High · Grades 9–12 · 2.1 mi

District: Santa Rosa High School District

Neighborhood · ZIP 95407These 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.89
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 100.460

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.13%
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.44,580
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,957 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$74,343
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$96,028
Average tempThe average temperature here across a full year.58°F
Annual precipHow much rain and melted snow falls here in a typical year.35 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

3840 Martina 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.

  • Worth less than 94% of homes in Santa Rosa 95407
  • Costs less per square foot than 76% of homes in Sonoma County
  • Smaller than 88% of homes in Sonoma County
  • Has a smaller lot than 96% of homes in Santa Rosa 95407
  • Newer than 91% of homes in Sonoma County

What homes are worth in Santa Rosa 95407

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

This home
$361K$996K

This home is worth more than 6% of homes in Santa Rosa 95407.

How it measures up in Santa Rosa 95407

The dot is this home. The mark in the middle is the typical home in Santa Rosa 95407.

Estimated value$421,810
CheaperTypical $592,583Pricier

Pricier than 6% of homes nearby

Price per ft²$416
CheaperTypical $421Pricier

Pricier than 48% of homes nearby

Living area1,013 ft²
SmallerTypical 1,338 ft²Bigger

Bigger than 15% of homes nearby

Lot size1 ft²
SmallerTypical 0.14 acBigger

Bigger than 4% of homes nearby

Year built2006
OlderTypical 1990Newer

Newer than 85% of homes nearby

How 3840 Martina Ave ranks against every home in each area.
MeasureThis homeWrightSanta Rosa 95407Sonoma County
Estimated valuepricier than$421,81011% of homes6% of homes6% of homes
Price per ft²pricier than$41661% of homes48% of homes24% of homes
Living areabigger than1,013 ft²16% of homes15% of homes12% of homes
Lot sizebigger than1 ft²13% of homes4% of homes4% of homes
Year builtnewer than200688% of homes85% of homes91% of homes

About 3840 Martina Ave

How much is 3840 Martina Ave, Santa Rosa, CA worth?

The TopHap Estimate for 3840 Martina Ave, Santa Rosa, CA is $421,810 as of Jul 14, 2026. The likely range is $407,573 to $436,047. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3840 Martina Ave, Santa Rosa, CA last sell?

3840 Martina Ave, Santa Rosa, CA last sold on May 19, 2025 for $421,500, according to the county's recorded deed. TopHap holds 5 recorded sales for this parcel.

How big is 3840 Martina Ave, Santa Rosa, CA?

3840 Martina Ave, Santa Rosa, CA has 2 bedrooms, 2.5 bathrooms and 1,013 square feet of living space.

When was 3840 Martina Ave, Santa Rosa, CA built?

3840 Martina Ave, Santa Rosa, CA was built in 2006, making it 20 years old. It is a custom design home. The building has 2 stories.

What schools serve 3840 Martina Ave, Santa Rosa, CA?

3840 Martina Ave, Santa Rosa, CA is assigned to Wright Charter (elementary), rated D; Elsie Allen High School (high), rated D. All sit in Santa Rosa High School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 3840 Martina Ave, Santa Rosa, CA compare to other homes in Santa Rosa 95407?

Among the 9,345 homes in Santa Rosa 95407, it is worth more than 6% of them ($421,810 against a typical $592,583), its price per square foot is higher than 48% of them ($416 against a typical $421), it is bigger than 15% of them (1,013 ft² against a typical 1,338 ft²), its lot is bigger than 4% of them (1 ft² against a typical 0.14 ac) and it is newer than 85% of them (2006 against a typical 1990). Measured against all of Sonoma County, it is worth more than 6% 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 3840 Martina Ave, Santa Rosa, CA?

The 2025 property tax bill for 3840 Martina Ave, Santa Rosa, CA was $2,125. The county assessed it at $429,930.

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