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Single Family ResidenceResidential
$317,298$361 / 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 Oct 21, 2026

105 ISAAC ST

RAPID CITY, SD 57703
3
Beds
2
Baths
879 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.
0.2 ac
Lot SizeThe size of the land the home sits on, from county records.
2024
Year BuiltThe year the home was originally built, according to county records.

Valuation

$317K
$291K low$344K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,666 (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.$123,400 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$53,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$69,900
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$123,400

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.9 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.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Ranch
CountyPENNINGTON
Lot (acres)The size of the land the home sits on, from county records.0.20
PoolWhether the property has a pool, and what kind, such as in-ground.No

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

M
East Middle SchoolD+
Middle · Grades 6–8 · 1.8 mi
E
Valley View Elementary SchoolD
Elementary · Grades KG–5 · 1.8 mi
H
Central High SchoolD
High · Grades 9–12 · 2.8 mi

District: Rapid City Area Schools

Neighborhood · ZIP 57703These 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.84
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.103
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.31

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.16%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.4%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.6%
PopulationHow many people live in this area.17,921
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.140 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$80,839
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$89,305
Average tempThe average temperature here across a full year.47°F
Annual precipHow much rain and melted snow falls here in a typical year.16 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.63%

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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

105 Isaac 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.

  • Worth less than 84% of homes in Rapid City 57703
  • Costs more per square foot than 67% of homes in Pennington County
  • Smaller than 93% of homes in Rapid City 57703
  • Has a smaller lot than 65% of homes in Rapid City 57703
  • Among the newest homes in Rapid City 57703

What homes are worth in Rapid City 57703

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

This home
$266K$742K

This home is worth more than 16% of homes in Rapid City 57703.

How it measures up in Rapid City 57703

The dot is this home. The mark in the middle is the typical home in Rapid City 57703.

Estimated value$317,298
CheaperTypical $374,632Pricier

Pricier than 16% of homes nearby

Price per ft²$361
CheaperTypical $345Pricier

Pricier than 65% of homes nearby

Living area879 ft²
SmallerTypical 1,283 ft²Bigger

Bigger than 7% of homes nearby

Lot size0.2 ac
SmallerTypical 0.24 acBigger

Bigger than 35% of homes nearby

Year built2024
OlderTypical 1999Newer

Newer than almost all homes nearby

How 105 Isaac St ranks against every home in each area.
MeasureThis homeRapid City 57703Pennington County
Estimated valuepricier than$317,29816% of homes30% of homes
Price per ft²pricier than$36165% of homes67% of homes
Living areabigger than879 ft²7% of homes10% of homes
Lot sizebigger than0.2 ac35% of homes39% of homes
Year builtnewer than2024almost all homesalmost all homes

About 105 Isaac St

How much is 105 Isaac St, Rapid City, SD worth?

The TopHap Estimate for 105 Isaac St, Rapid City, SD is $317,298 as of Oct 21, 2026. The likely range is $290,764 to $343,832. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 105 Isaac St, Rapid City, SD last sell?

105 Isaac St, Rapid City, SD last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 105 Isaac St, Rapid City, SD?

105 Isaac St, Rapid City, SD has 3 bedrooms, 2 bathrooms, 879 square feet of living space and a 0.20-acre lot.

When was 105 Isaac St, Rapid City, SD built?

105 Isaac St, Rapid City, SD was built in 2024, making it 2 years old. It is a ranch home.

What schools serve 105 Isaac St, Rapid City, SD?

105 Isaac St, Rapid City, SD is assigned to East Middle School (middle), rated D+; Valley View Elementary School (elementary), rated D; Central High School (high), rated D. All sit in Rapid City Area Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 105 Isaac St, Rapid City, SD compare to other homes in Rapid City 57703?

Among the 7,243 homes in Rapid City 57703, it is worth more than 16% of them ($317,298 against a typical $374,632), its price per square foot is higher than 65% of them ($361 against a typical $345), it is bigger than 7% of them (879 ft² against a typical 1,283 ft²), its lot is bigger than 35% of them (0.2 ac against a typical 0.24 ac) and it is newer than almost all of them (2024 against a typical 1999). Measured against all of Pennington County, it is worth more than 30% 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 105 Isaac St, Rapid City, SD?

The 2025 property tax bill for 105 Isaac St, Rapid City, SD was $1,666. The county assessed it at $123,400.

More homes on Isaac St

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Assigned schools

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