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Residential (General/Single)Residential
$303,906$169 / 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 83How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026
Last sold for $99,000 on May 30, 2013

21257 AMERICAN RIVER DR

SONORA, CA 95370
3
Beds
2.5
Baths
1,800 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.
0.25 ac
Lot SizeThe size of the land the home sits on, from county records.
1977
Year BuiltThe year the home was originally built, according to county records.
3
StoriesHow many floors the home has above ground.
3
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$304K
$252K low$355K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$99,000 · May 30, 2013

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,273 (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.$124,337 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$37,676
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$86,661
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$121,900
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$319,680

Climate Risk

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.Residential (General/Single)
CountyTUOLUMNE
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.1978
Lot (acres)The size of the land the home sits on, from county records.0.25
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
CoolingThe type of cooling or air conditioning in the home.Yes
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(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.

Foreclosure Filings(3)

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

E
Curtis Creek Elementary SchoolD+
Elementary · Grades KG–8 · 3.7 mi
H
Sonora High SchoolB
High · Grades 9–12 · 6.4 mi

District: Curtis Creek Elementary School District

Neighborhood · ZIP 95370These 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.90
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.85
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.81

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.87%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.19%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.15%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.27,153
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.246 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$76,469
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$99,345
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

21257 American River 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.

  • Worth less than 78% of homes in Sonora 95370
  • Costs less per square foot than 98% of homes in Sonora 95370
  • Bigger than 67% of homes in Tuolumne County
  • Has a smaller lot than 86% of homes in Sonora 95370

What homes are worth in Sonora 95370

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

This home
$182K$892K

This home is worth more than 22% of homes in Sonora 95370.

How it measures up in Sonora 95370

The dot is this home. The mark in the middle is the typical home in Sonora 95370.

Estimated value$303,906
CheaperTypical $391,208Pricier

Pricier than 22% of homes nearby

Price per ft²$169
CheaperTypical $250Pricier

Pricier than 2% of homes nearby

Living area1,800 ft²
SmallerTypical 1,584 ft²Bigger

Bigger than 64% of homes nearby

Lot size0.25 ac
SmallerTypical 0.64 acBigger

Bigger than 14% of homes nearby

Year built1977
OlderTypical 1978Newer

Newer than 46% of homes nearby

How 21257 American River Dr ranks against every home in each area.
MeasureThis homeSonora 95370Tuolumne County
Estimated valuepricier than$303,90622% of homes32% of homes
Price per ft²pricier than$1692% of homes5% of homes
Living areabigger than1,800 ft²64% of homes67% of homes
Lot sizebigger than0.25 ac14% of homes22% of homes
Year builtnewer than197746% of homes45% of homes

About 21257 American River Dr

How much is 21257 American River Dr, Sonora, CA worth?

The TopHap Estimate for 21257 American River Dr, Sonora, CA is $303,906 as of Aug 30, 2026. The likely range is $252,343 to $355,469. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21257 American River Dr, Sonora, CA last sell?

21257 American River Dr, Sonora, CA last sold on May 30, 2013 for $99,000, according to the county's recorded deed. TopHap holds 4 recorded sales for this parcel.

How big is 21257 American River Dr, Sonora, CA?

21257 American River Dr, Sonora, CA has 3 bedrooms, 2.5 bathrooms, 1,800 square feet of living space and a 0.25-acre lot.

When was 21257 American River Dr, Sonora, CA built?

21257 American River Dr, Sonora, CA was built in 1977, making it 49 years old. The building has 3 stories.

What schools serve 21257 American River Dr, Sonora, CA?

21257 American River Dr, Sonora, CA is assigned to Curtis Creek Elementary School (elementary), rated D+; Sonora High School (high), rated B. All sit in Curtis Creek Elementary School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21257 American River Dr, Sonora, CA compare to other homes in Sonora 95370?

Among the 10,859 homes in Sonora 95370, it is worth more than 22% of them ($303,906 against a typical $391,208), its price per square foot is higher than 2% of them ($169 against a typical $250), it is bigger than 64% of them (1,800 ft² against a typical 1,584 ft²), its lot is bigger than 14% of them (0.25 ac against a typical 0.64 ac) and it is newer than 46% of them (1977 against a typical 1978). Measured against all of Tuolumne County, it is worth more than 32% 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 21257 American River Dr, Sonora, CA?

The 2025 property tax bill for 21257 American River Dr, Sonora, CA was $1,273. The county assessed it at $124,337.

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