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Residential (General/Single)Residential
$142,983$61 / 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 70How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026
Last sold for $47,500 on Aug 20, 2012

309 RIVERSIDE ST

ALTURAS, CA 96101
4
Beds
2
Baths
2,332 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.
0.11 ac
Lot SizeThe size of the land the home sits on, from county records.
1931
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
9
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$143K
$100K low$186K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$47,500 · Aug 20, 2012

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$843 (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.$58,481 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$7,332
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$51,149
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$57,336

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.27 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.1 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.Residential (General/Single)
CountyMODOC
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.1948
Lot (acres)The size of the land the home sits on, from county records.0.11
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
HeatingThe type of heating system in the home.Yes
FireplaceWhether the home has a fireplace, and what kind.Yes
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(9)

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.

H
Modoc High SchoolD+
High · Grades 9–12 · 0.8 mi
M
Modoc Middle SchoolC+
Middle · Grades 6–8 · 1.0 mi
E
Alturas Elementary SchoolC+
Elementary · Grades KG–5 · 1.1 mi

District: Modoc Joint Unified School District

Neighborhood · ZIP 96101These 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.115
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.107
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.152

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.83%
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.16%
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.4,077
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.7 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$53,717
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$59,819
Average tempThe average temperature here across a full year.48°F
Annual precipHow much rain and melted snow falls here in a typical year.15 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.88%

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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

309 Riverside St 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.

  • Costs less per square foot than 95% of homes in Alturas 96101
  • Bigger than 93% of homes in Alturas 96101
  • Has a smaller lot than 98% of homes in Modoc County
  • Older than 71% of homes in Modoc County

What homes are worth in Alturas 96101

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

This home
$47K$452K

This home is worth more than 45% of homes in Alturas 96101.

How it measures up in Alturas 96101

The dot is this home. The mark in the middle is the typical home in Alturas 96101.

Estimated value$142,983
CheaperTypical $155,825Pricier

Pricier than 45% of homes nearby

Price per ft²$61
CheaperTypical $118Pricier

Pricier than 5% of homes nearby

Living area2,332 ft²
SmallerTypical 1,304 ft²Bigger

Bigger than 93% of homes nearby

Lot size0.11 ac
SmallerTypical 0.25 acBigger

Bigger than 3% of homes nearby

Year built1931
OlderTypical 1954Newer

Newer than 31% of homes nearby

How 309 Riverside St ranks against every home in each area.
MeasureThis homeAlturas 96101Modoc County
Estimated valuepricier than$142,98345% of homes41% of homes
Price per ft²pricier than$615% of homes5% of homes
Living areabigger than2,332 ft²93% of homes91% of homes
Lot sizebigger than0.11 ac3% of homes2% of homes
Year builtnewer than193131% of homes29% of homes

About 309 Riverside St

How much is 309 Riverside St, Alturas, CA worth?

The TopHap Estimate for 309 Riverside St, Alturas, CA is $142,983 as of Sep 24, 2026. The likely range is $99,925 to $186,041. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 309 Riverside St, Alturas, CA last sell?

309 Riverside St, Alturas, CA last sold on Aug 20, 2012 for $47,500, according to the county's recorded deed. TopHap holds 6 recorded sales for this parcel.

How big is 309 Riverside St, Alturas, CA?

309 Riverside St, Alturas, CA has 4 bedrooms, 2 bathrooms, 2,332 square feet of living space and a 0.11-acre lot.

When was 309 Riverside St, Alturas, CA built?

309 Riverside St, Alturas, CA was built in 1931, making it 95 years old. The building has 2 stories.

What schools serve 309 Riverside St, Alturas, CA?

309 Riverside St, Alturas, CA is assigned to Modoc High School (high), rated D+; Modoc Middle School (middle), rated C+; Alturas Elementary School (elementary), rated C+. All sit in Modoc Joint Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 309 Riverside St, Alturas, CA compare to other homes in Alturas 96101?

Among the 1,585 homes in Alturas 96101, it is worth more than 45% of them ($142,983 against a typical $155,825), its price per square foot is higher than 5% of them ($61 against a typical $118), it is bigger than 93% of them (2,332 ft² against a typical 1,304 ft²), its lot is bigger than 3% of them (0.11 ac against a typical 0.25 ac) and it is newer than 31% of them (1931 against a typical 1954). Measured against all of Modoc County, it is worth more than 41% 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 309 Riverside St, Alturas, CA?

The 2025 property tax bill for 309 Riverside St, Alturas, CA was $843. The county assessed it at $58,481.

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