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Single Family ResidenceResidential
$261,115$254 / 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 71How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026

100 WALNUT ST

BUFFALO GAP, SD 57722
2
Beds
1
Baths
1,030 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.
0.28 ac
Lot SizeThe size of the land the home sits on, from county records.
1914
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
2
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$261K
$187K low$336K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$655 (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.$51,237 (2026)
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$51,237
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$56,342
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$46,157

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.11 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.Single Family Residence
CountyCUSTER
Lot (acres)The size of the land the home sits on, from county records.0.28
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Yes
CoolingThe type of cooling or air conditioning in the home.None
FireplaceWhether the home has a fireplace, and what kind.Yes
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.Shed · 240 ft²Patio · 96 ft²Porch · 64 ft²

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

H
Hot Springs High School - 01D
High · Grades 9–12 · 9.6 mi
M
Hot Springs Middle School - 06B-
Middle · Grades 6–8 · 9.6 mi
E
Hot Springs Elementary - 02C
Elementary · Grades PK–5 · 9.7 mi

District: Hot Springs School District 23-2

Neighborhood · ZIP 57722These 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.135
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 100.37

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.90%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.8.2%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.57%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.7%
PopulationHow many people live in this area.1,346
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$46,504
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$72,682
Average tempThe average temperature here across a full year.48°F
Annual precipHow much rain and melted snow falls here in a typical year.18 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

100 Walnut 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 93% of homes in Custer County
  • Costs less per square foot than 85% of homes in Custer County
  • Smaller than 76% of homes in Custer County
  • Has a smaller lot than 81% of homes in Custer County
  • Older than 97% of homes in Custer County

What homes are worth in Buffalo Gap 57722

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

This home
$115K$1.7M

This home is worth more than 23% of homes in Buffalo Gap 57722.

How it measures up in Buffalo Gap 57722

The dot is this home. The mark in the middle is the typical home in Buffalo Gap 57722.

Estimated value$261,115
CheaperTypical $383,263Pricier

Pricier than 23% of homes nearby

Price per ft²$254
CheaperTypical $329Pricier

Pricier than 38% of homes nearby

Living area1,030 ft²
SmallerTypical 1,266 ft²Bigger

Bigger than 34% of homes nearby

Lot size0.28 ac
SmallerTypical 0.82 acBigger

Bigger than 20% of homes nearby

Year built1914
OlderTypical 1979Newer

Newer than 19% of homes nearby

How 100 Walnut St ranks against every home in each area.
MeasureThis homeBuffalo Gap 57722Custer County
Estimated valuepricier than$261,11523% of homes7% of homes
Price per ft²pricier than$25438% of homes15% of homes
Living areabigger than1,030 ft²34% of homes24% of homes
Lot sizebigger than0.28 ac20% of homes19% of homes
Year builtnewer than191419% of homes3% of homes

About 100 Walnut St

How much is 100 Walnut St, Buffalo Gap, SD worth?

The TopHap Estimate for 100 Walnut St, Buffalo Gap, SD is $261,115 as of Aug 30, 2026. The likely range is $186,516 to $335,714. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 100 Walnut St, Buffalo Gap, SD last sell?

100 Walnut St, Buffalo Gap, SD last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 100 Walnut St, Buffalo Gap, SD?

100 Walnut St, Buffalo Gap, SD has 2 bedrooms, 1 bathrooms, 1,030 square feet of living space and a 0.28-acre lot.

When was 100 Walnut St, Buffalo Gap, SD built?

100 Walnut St, Buffalo Gap, SD was built in 1914, making it 112 years old. The building has 1 story.

What schools serve 100 Walnut St, Buffalo Gap, SD?

100 Walnut St, Buffalo Gap, SD is assigned to Hot Springs High School - 01 (high), rated D; Hot Springs Middle School - 06 (middle), rated B-; Hot Springs Elementary - 02 (elementary), rated C. All sit in Hot Springs School District 23-2. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 100 Walnut St, Buffalo Gap, SD compare to other homes in Buffalo Gap 57722?

Among the 202 homes in Buffalo Gap 57722, it is worth more than 23% of them ($261,115 against a typical $383,263), its price per square foot is higher than 38% of them ($254 against a typical $329), it is bigger than 34% of them (1,030 ft² against a typical 1,266 ft²), its lot is bigger than 20% of them (0.28 ac against a typical 0.82 ac) and it is newer than 19% of them (1914 against a typical 1979). Measured against all of Custer County, it is worth more than 7% 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 100 Walnut St, Buffalo Gap, SD?

The 2025 property tax bill for 100 Walnut St, Buffalo Gap, SD was $655. The county assessed it at $51,237.

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