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Duplex (2 Units, Any Combination)Residential

421 TOPAZ LN

RAPID CITY, SD 57701
4
Beds
4
Baths
2,584 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.
0.25 ac
Lot SizeThe size of the land the home sits on, from county records.
2011
Year BuiltThe year the home was originally built, according to county records.

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,619 (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.$495,500 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$67,400
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$428,100
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$495,500

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Duplex (2 Units, Any Combination)
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.0.25
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Patio · 168 ft²Porch · 358 ft²

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

E
Grandview Elementary SchoolB
Elementary · Grades KG–5 · 1.1 mi
M
South Middle SchoolD+
Middle · Grades 6–8 · 1.8 mi
H
Central High SchoolD
High · Grades 9–12 · 3.6 mi

District: Rapid City Area Schools

Neighborhood · ZIP 57701These 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.129
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 100.30

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.94%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.18%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.18%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.5%
PopulationHow many people live in this area.45,780
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.728 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$54,251
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$68,885
Average tempThe average temperature here across a full year.47°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%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Absentee owner
Company ownedWhether the owner is a company or trust rather than a person.Yes

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

421 Topaz Ln 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.

  • Bigger than 87% of homes in Rapid City 57701
  • Has a bigger lot than 75% of homes in Rapid City 57701
  • Newer than 93% of homes in Rapid City 57701

How it measures up in Rapid City 57701

The dot is this home. The mark in the middle is the typical home in Rapid City 57701.

Living area2,584 ft²
SmallerTypical 1,140 ft²Bigger

Bigger than 87% of homes nearby

Lot size0.25 ac
SmallerTypical 0.19 acBigger

Bigger than 75% of homes nearby

Year built2011
OlderTypical 1972Newer

Newer than 93% of homes nearby

How 421 Topaz Ln ranks against every home in each area.
MeasureThis homeRapid City 57701Pennington County
Living areabigger than2,584 ft²87% of homes83% of homes
Lot sizebigger than0.25 ac75% of homes53% of homes
Year builtnewer than201193% of homes90% of homes

About 421 Topaz Ln

How big is 421 Topaz Ln, Rapid City, SD?

421 Topaz Ln, Rapid City, SD has 4 bedrooms, 4 bathrooms, 2,584 square feet of living space and a 0.25-acre lot.

When was 421 Topaz Ln, Rapid City, SD built?

421 Topaz Ln, Rapid City, SD was built in 2011, making it 15 years old. It is a ranch home.

What schools serve 421 Topaz Ln, Rapid City, SD?

421 Topaz Ln, Rapid City, SD is assigned to Grandview Elementary School (elementary), rated B; South Middle School (middle), 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 421 Topaz Ln, Rapid City, SD compare to other homes in Rapid City 57701?

Among the 13,906 homes in Rapid City 57701, it is bigger than 87% of them (2,584 ft² against a typical 1,140 ft²), its lot is bigger than 75% of them (0.25 ac against a typical 0.19 ac) and it is newer than 93% of them (2011 against a typical 1972). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 421 Topaz Ln, Rapid City, SD?

The 2025 property tax bill for 421 Topaz Ln, Rapid City, SD was $6,619. The county assessed it at $495,500.

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Closest homes

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Assigned schools

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