Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$249,900$225 / 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 95How 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
Last sold for $119,000 on May 6, 2021

821 MONTGOMERY ST

CUSTER, SD 57730
2
Beds
1
Baths
1,112 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.
0.17 ac
Lot SizeThe size of the land the home sits on, from county records.
1900
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$250K
$237K low$263K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$119,000 · May 6, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,751 (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.$123,435 (2026)
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$123,435
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$153,035
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$119,276

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.76 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 Residence
CountyCUSTER
Lot (acres)The size of the land the home sits on, from county records.0.17
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.No Foundation
RoofThe main material covering the roof, such as asphalt shingle or tile.Metal
HeatingThe type of heating system in the home.Yes
CoolingThe type of cooling or air conditioning in the home.None
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 · 254 ft²Shed · 224 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
Custer Elementary - 02B+
Elementary · Grades PK–6 · 0.8 mi
H
Custer High School - 01C+
High · Grades 9–12 · 0.9 mi
M
Custer Jr. High - 05A-
Middle · Grades 7–8 · 0.9 mi

District: Custer School District 16-1

Neighborhood · ZIP 57730These 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.97
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.44

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.81%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.20%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.7%
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.5,941
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.$73,295
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$92,357
Average tempThe average temperature here across a full year.44°F
Annual precipHow much rain and melted snow falls here in a typical year.19 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.63%

Owner Tools

Do you own this home?
Claim this home

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

821 Montgomery 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 57730
  • Costs less per square foot than 91% of homes in Custer 57730
  • Smaller than 71% of homes in Custer County
  • Has a smaller lot than 90% of homes in Custer County
  • Older than 98% of homes in Custer 57730

What homes are worth in Custer 57730

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

This home
$198K$1.5M

This home is worth more than 7% of homes in Custer 57730.

How it measures up in Custer 57730

The dot is this home. The mark in the middle is the typical home in Custer 57730.

Estimated value$249,900
CheaperTypical $533,928Pricier

Pricier than 7% of homes nearby

Price per ft²$225
CheaperTypical $373Pricier

Pricier than 9% of homes nearby

Living area1,112 ft²
SmallerTypical 1,368 ft²Bigger

Bigger than 32% of homes nearby

Lot size0.17 ac
SmallerTypical 2.45 acBigger

Bigger than 11% of homes nearby

Year built1900
OlderTypical 1994Newer

Newer than 2% of homes nearby

How 821 Montgomery St ranks against every home in each area.
MeasureThis homeCuster 57730Custer County
Estimated valuepricier than$249,9007% of homes7% of homes
Price per ft²pricier than$2259% of homes9% of homes
Living areabigger than1,112 ft²32% of homes29% of homes
Lot sizebigger than0.17 ac11% of homes10% of homes
Year builtnewer than19002% of homes2% of homes

About 821 Montgomery St

How much is 821 Montgomery St, Custer, SD worth?

The TopHap Estimate for 821 Montgomery St, Custer, SD is $249,900 as of Aug 30, 2026. The likely range is $236,655 to $263,145. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 821 Montgomery St, Custer, SD last sell?

821 Montgomery St, Custer, SD last sold on May 6, 2021 for $119,000, according to the county's recorded deed.

How big is 821 Montgomery St, Custer, SD?

821 Montgomery St, Custer, SD has 2 bedrooms, 1 bathrooms, 1,112 square feet of living space and a 0.17-acre lot.

When was 821 Montgomery St, Custer, SD built?

821 Montgomery St, Custer, SD was built in 1900, making it 126 years old. The building has 1 story.

What schools serve 821 Montgomery St, Custer, SD?

821 Montgomery St, Custer, SD is assigned to Custer Elementary - 02 (elementary), rated B+; Custer High School - 01 (high), rated C+; Custer Jr. High - 05 (middle), rated A-. All sit in Custer School District 16-1. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 821 Montgomery St, Custer, SD compare to other homes in Custer 57730?

Among the 3,507 homes in Custer 57730, it is worth more than 7% of them ($249,900 against a typical $533,928), its price per square foot is higher than 9% of them ($225 against a typical $373), it is bigger than 32% of them (1,112 ft² against a typical 1,368 ft²), its lot is bigger than 11% of them (0.17 ac against a typical 2.45 ac) and it is newer than 2% of them (1900 against a typical 1994). 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 821 Montgomery St, Custer, SD?

The 2025 property tax bill for 821 Montgomery St, Custer, SD was $1,751. The county assessed it at $123,435.

More homes on Montgomery St

Closest homes

More homes in Custer 57730

Assigned schools

Explore the area

See this home in context

Open 821 Montgomery St on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map