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Commercial Building, Mail Order, Show Room (Non-Auto), WarehouseCommercial

102 MORTENSEN LN

SPEARFISH, SD 57783
0
Baths
3,552 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.
1.49 ac
Lot SizeThe size of the land the home sits on, from county records.
2014
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,653 (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.$371,200 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$200,470
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$170,730
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$356,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$313,000

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Commercial Building, Mail Order, Show Room (Non-Auto), Warehouse
CountyLAWRENCE
Lot (acres)The size of the land the home sits on, from county records.1.49
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.

E
West Elementary - 03
Elementary · Grades 1–2 · 0.5 mi
M
Spearfish Middle School - 05B-
Middle · Grades 6–8 · 0.7 mi
H
Spearfish High School - 01C+
High · Grades 9–12 · 0.7 mi

District: Spearfish School District 40-2

Neighborhood · ZIP 57783These 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.86
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.105
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.33

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.92%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.31%
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.17,419
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.84 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$68,002
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$88,688
Average tempThe average temperature here across a full year.44°F
Annual precipHow much rain and melted snow falls here in a typical year.24 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

102 Mortensen 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 98% of homes in Spearfish 57783
  • Has a bigger lot than 75% of homes in Spearfish 57783
  • Newer than 84% of homes in Spearfish 57783

How it measures up in Spearfish 57783

The dot is this home. The mark in the middle is the typical home in Spearfish 57783.

Living area3,552 ft²
SmallerTypical 1,368 ft²Bigger

Bigger than 98% of homes nearby

Lot size1.49 ac
SmallerTypical 0.28 acBigger

Bigger than 75% of homes nearby

Year built2014
OlderTypical 1995Newer

Newer than 84% of homes nearby

How 102 Mortensen Ln ranks against every home in each area.
MeasureThis homeSpearfish 57783Lawrence County
Living areabigger than3,552 ft²98% of homes98% of homes
Lot sizebigger than1.49 ac75% of homes66% of homes
Year builtnewer than201484% of homes84% of homes

About 102 Mortensen Ln

When did 102 Mortensen Ln, Spearfish, SD last sell?

102 Mortensen Ln, Spearfish, SD last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 102 Mortensen Ln, Spearfish, SD?

102 Mortensen Ln, Spearfish, SD has 3,552 square feet of living space and a 1.49-acre lot.

When was 102 Mortensen Ln, Spearfish, SD built?

102 Mortensen Ln, Spearfish, SD was built in 2014, making it 12 years old. The building has 1 story.

What schools serve 102 Mortensen Ln, Spearfish, SD?

102 Mortensen Ln, Spearfish, SD is assigned to West Elementary - 03 (elementary); Spearfish Middle School - 05 (middle), rated B-; Spearfish High School - 01 (high), rated C+. All sit in Spearfish School District 40-2. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 102 Mortensen Ln, Spearfish, SD compare to other homes in Spearfish 57783?

Among the 7,148 homes in Spearfish 57783, it is bigger than 98% of them (3,552 ft² against a typical 1,368 ft²), its lot is bigger than 75% of them (1.49 ac against a typical 0.28 ac) and it is newer than 84% of them (2014 against a typical 1995). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 102 Mortensen Ln, Spearfish, SD?

The 2025 property tax bill for 102 Mortensen Ln, Spearfish, SD was $4,653. The county assessed it at $371,200.

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