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Mobile HomeResidential
$417,402$512 / 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 92How 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

170 RIVER ROCK RD

LEWISTON, CA 96052
3
Beds
0
Baths
816 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.
2.89 ac
Lot SizeThe size of the land the home sits on, from county records.
1991
Year BuiltThe year the home was originally built, according to county records.

Valuation

$417K
$382K low$453K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,936 (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.$499,193 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$126,886
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$372,307
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$489,406

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.197 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.Mobile Home
StyleThe architectural style of the home, such as ranch or colonial.Mobile Home
CountyTRINITY
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(5)

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
Lewiston Elementary SchoolD+
Elementary · Grades KG–8 · 1.3 mi
H
Trinity High SchoolC
High · Grades 9–12 · 6.6 mi

District: Trinity Alps Unified School District

Neighborhood · ZIP 96052These 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.146
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.101
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.170

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.76%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.9.6%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.19%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.5%
PopulationHow many people live in this area.991
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.5 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$55,563
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$78,926
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.54 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.53%

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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

170 River Rock Rd 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 more than 91% of homes in Trinity County
  • Costs more per square foot than 98% of homes in Lewiston 96052
  • Smaller than 86% of homes in Lewiston 96052
  • Newer than 71% of homes in Lewiston 96052

What homes are worth in Lewiston 96052

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

This home
$63K$641K

This home is worth more than 87% of homes in Lewiston 96052.

How it measures up in Lewiston 96052

The dot is this home. The mark in the middle is the typical home in Lewiston 96052.

Estimated value$417,402
CheaperTypical $242,996Pricier

Pricier than 87% of homes nearby

Price per ft²$512
CheaperTypical $178Pricier

Pricier than 98% of homes nearby

Living area816 ft²
SmallerTypical 1,344 ft²Bigger

Bigger than 14% of homes nearby

Lot size2.89 ac
SmallerTypical 2.26 acBigger

Bigger than 60% of homes nearby

Year built1991
OlderTypical 1979Newer

Newer than 71% of homes nearby

How 170 River Rock Rd ranks against every home in each area.
MeasureThis homeLewiston 96052Trinity County
Estimated valuepricier than$417,40287% of homes91% of homes
Price per ft²pricier than$51298% of homes98% of homes
Living areabigger than816 ft²14% of homes19% of homes
Lot sizebigger than2.89 ac60% of homes55% of homes
Year builtnewer than199171% of homes69% of homes

About 170 River Rock Rd

How much is 170 River Rock Rd, Lewiston, CA worth?

The TopHap Estimate for 170 River Rock Rd, Lewiston, CA is $417,402 as of Jul 14, 2026. The likely range is $382,083 to $452,721. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 170 River Rock Rd, Lewiston, CA last sell?

170 River Rock Rd, Lewiston, CA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 170 River Rock Rd, Lewiston, CA?

170 River Rock Rd, Lewiston, CA has 3 bedrooms and 816 square feet of living space.

When was 170 River Rock Rd, Lewiston, CA built?

170 River Rock Rd, Lewiston, CA was built in 1991, making it 35 years old. It is a mobile home home.

What schools serve 170 River Rock Rd, Lewiston, CA?

170 River Rock Rd, Lewiston, CA is assigned to Lewiston Elementary School (elementary), rated D+; Trinity High School (high), rated C. All sit in Trinity Alps Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 170 River Rock Rd, Lewiston, CA compare to other homes in Lewiston 96052?

Among the 722 homes in Lewiston 96052, it is worth more than 87% of them ($417,402 against a typical $242,996), its price per square foot is higher than 98% of them ($512 against a typical $178), it is bigger than 14% of them (816 ft² against a typical 1,344 ft²), its lot is bigger than 60% of them (2.89 ac against a typical 2.26 ac) and it is newer than 71% of them (1991 against a typical 1979). Measured against all of Trinity County, it is worth more than 91% 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 170 River Rock Rd, Lewiston, CA?

The 2025 property tax bill for 170 River Rock Rd, Lewiston, CA was $4,936. The county assessed it at $499,193.

More homes on River Rock Rd

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More homes in Lewiston 96052

Assigned schools

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