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Single Family ResidentialResidential
$194,134$143 / 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 90How 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

321 S 100 W

HELPER, UT 84526
0
Baths
1,360 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.
0.19 ac
Lot SizeThe size of the land the home sits on, from county records.
1910
Year BuiltThe year the home was originally built, according to county records.

Valuation

$194K
$175K low$214K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$977 (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.$76,421 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$12,953
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$63,468
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$76,421
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$138,947

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.46
95
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
49
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
87
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.125 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.51%
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.Single Family Residential
CountyCarbon
Lot (acres)The size of the land the home sits on, from county records.0.19

Transaction History(6)

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.

M
Helper Middle SchoolA-
Middle · Grades 6–8 · 0.5 mi
H
Carbon High SchoolC-
High · Grades 9–12 · 6.0 mi

District: Carbon School District

Neighborhood · ZIP 84526These 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.117
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.99
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.0

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.78%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.17%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.17%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.4,836
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.12 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$59,675
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$74,299
Average tempThe average temperature here across a full year.42°F
Annual precipHow much rain and melted snow falls here in a typical year.17 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.66%

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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

321 S 100 W 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 77% of homes in Helper 84526
  • Costs less per square foot than 92% of homes in Helper 84526
  • Bigger than 66% of homes in Helper 84526
  • Has a smaller lot than 65% of homes in Helper 84526
  • Older than 98% of homes in Carbon County

What homes are worth in Helper 84526

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

This home
$127K$701K

This home is worth more than 23% of homes in Helper 84526.

How it measures up in Helper 84526

The dot is this home. The mark in the middle is the typical home in Helper 84526.

Estimated value$194,134
CheaperTypical $247,402Pricier

Pricier than 23% of homes nearby

Price per ft²$143
CheaperTypical $213Pricier

Pricier than 8% of homes nearby

Living area1,360 ft²
SmallerTypical 1,148 ft²Bigger

Bigger than 66% of homes nearby

Lot size0.19 ac
SmallerTypical 0.25 acBigger

Bigger than 35% of homes nearby

Year built1910
OlderTypical 1957Newer

Newer than 4% of homes nearby

How 321 S 100 W ranks against every home in each area.
MeasureThis homeHelper 84526Carbon County
Estimated valuepricier than$194,13423% of homes26% of homes
Price per ft²pricier than$1438% of homes11% of homes
Living areabigger than1,360 ft²66% of homes63% of homes
Lot sizebigger than0.19 ac35% of homes35% of homes
Year builtnewer than19104% of homes2% of homes

About 321 S 100 W

How much is 321 S 100 W, Helper, UT worth?

The TopHap Estimate for 321 S 100 W, Helper, UT is $194,134 as of Sep 24, 2026. The likely range is $174,744 to $213,524. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 321 S 100 W, Helper, UT last sell?

321 S 100 W, Helper, UT last sold on May 16, 2018, according to the county's recorded deed.

How big is 321 S 100 W, Helper, UT?

321 S 100 W, Helper, UT has 1,360 square feet of living space and a 0.19-acre lot.

When was 321 S 100 W, Helper, UT built?

321 S 100 W, Helper, UT was built in 1910, making it 116 years old.

What schools serve 321 S 100 W, Helper, UT?

321 S 100 W, Helper, UT is assigned to Helper Middle School (middle), rated A-; Carbon High School (high), rated C-. All sit in Carbon School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 321 S 100 W, Helper, UT compare to other homes in Helper 84526?

Among the 1,918 homes in Helper 84526, it is worth more than 23% of them ($194,134 against a typical $247,402), its price per square foot is higher than 8% of them ($143 against a typical $213), it is bigger than 66% of them (1,360 ft² against a typical 1,148 ft²), its lot is bigger than 35% of them (0.19 ac against a typical 0.25 ac) and it is newer than 4% of them (1910 against a typical 1957). Measured against all of Carbon County, it is worth more than 26% 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 321 S 100 W, Helper, UT?

The 2025 property tax bill for 321 S 100 W, Helper, UT was $977. The county assessed it at $76,421.

More homes on S 100 W

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Assigned schools

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