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Single Family ResidenceResidential
$447,417$345 / 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 91How 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 $147,000 on Feb 26, 2018

13710 HIGHWAY 40

KEYSTONE, SD 57751
2
Beds
2
Baths
1,296 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.
5.64 ac
Lot SizeThe size of the land the home sits on, from county records.
1923
Year BuiltThe year the home was originally built, according to county records.

Valuation

$447K
$407K low$488K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$147,000 · Feb 26, 2018

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,552 (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.$351,700 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$248,400
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$103,300
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$351,700

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.Bungalow
CountyPENNINGTON
Lot (acres)The size of the land the home sits on, from county records.5.64
ConstructionThe main material the home's frame and walls are built from.Log
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
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 96 ft²

Transaction History(1)

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
Hermosa Elementary - 04C-
Elementary · Grades PK–6 · 6.6 mi
H
Custer High School - 01B+
High · Grades 9–12 · 15.2 mi

District: Custer School District 16-1

Neighborhood · ZIP 57751These 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.109
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.104
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.39

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.25%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.6%
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.794
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.$111,312
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$130,793
Average tempThe average temperature here across a full year.46°F
Annual precipHow much rain and melted snow falls here in a typical year.20 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

13710 Highway 40 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 73% of homes in Keystone 57751
  • Costs less per square foot than 76% of homes in Keystone 57751
  • Smaller than 69% of homes in Keystone 57751
  • Has a bigger lot than 93% of homes in Pennington County
  • Older than 98% of homes in Pennington County

What homes are worth in Keystone 57751

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

This home
$241K$1.9M

This home is worth more than 27% of homes in Keystone 57751.

How it measures up in Keystone 57751

The dot is this home. The mark in the middle is the typical home in Keystone 57751.

Estimated value$447,417
CheaperTypical $641,188Pricier

Pricier than 27% of homes nearby

Price per ft²$345
CheaperTypical $443Pricier

Pricier than 24% of homes nearby

Living area1,296 ft²
SmallerTypical 1,600 ft²Bigger

Bigger than 31% of homes nearby

Lot size5.64 ac
SmallerTypical 3.18 acBigger

Bigger than 74% of homes nearby

Year built1923
OlderTypical 1996Newer

Newer than 7% of homes nearby

How 13710 Highway 40 ranks against every home in each area.
MeasureThis homeKeystone 57751Pennington County
Estimated valuepricier than$447,41727% of homes66% of homes
Price per ft²pricier than$34524% of homes60% of homes
Living areabigger than1,296 ft²31% of homes49% of homes
Lot sizebigger than5.64 ac74% of homes93% of homes
Year builtnewer than19237% of homes2% of homes

About 13710 Highway 40

How much is 13710 Highway 40, Keystone, SD worth?

The TopHap Estimate for 13710 Highway 40, Keystone, SD is $447,417 as of Sep 24, 2026. The likely range is $406,640 to $488,194. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 13710 Highway 40, Keystone, SD last sell?

13710 Highway 40, Keystone, SD last sold on Feb 26, 2018 for $147,000, according to the county's recorded deed.

How big is 13710 Highway 40, Keystone, SD?

13710 Highway 40, Keystone, SD has 2 bedrooms, 2 bathrooms, 1,296 square feet of living space and a 5.64-acre lot.

When was 13710 Highway 40, Keystone, SD built?

13710 Highway 40, Keystone, SD was built in 1923, making it 103 years old. It is a bungalow home.

What schools serve 13710 Highway 40, Keystone, SD?

13710 Highway 40, Keystone, SD is assigned to Hermosa Elementary - 04 (elementary), rated C-; Custer High School - 01 (high), rated B+. All sit in Custer School District 16-1. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 13710 Highway 40, Keystone, SD compare to other homes in Keystone 57751?

Among the 447 homes in Keystone 57751, it is worth more than 27% of them ($447,417 against a typical $641,188), its price per square foot is higher than 24% of them ($345 against a typical $443), it is bigger than 31% of them (1,296 ft² against a typical 1,600 ft²), its lot is bigger than 74% of them (5.64 ac against a typical 3.18 ac) and it is newer than 7% of them (1923 against a typical 1996). Measured against all of Pennington County, it is worth more than 66% 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 13710 Highway 40, Keystone, SD?

The 2025 property tax bill for 13710 Highway 40, Keystone, SD was $3,552. The county assessed it at $351,700.

More homes on Highway 40

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Assigned schools

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