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Single Family ResidenceResidential
$375,000$365 / 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 98How 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 $123,220 on Sep 14, 2026

2017 21ST AVE S

GREAT FALLS, MT 59405
3
Beds
2
Baths
1,028 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.
0.15 ac
Lot SizeThe size of the land the home sits on, from county records.
2020
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

$375K
$367K low$383K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$123,220 · Sep 14, 2026

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,038 (2026)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$351,900 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$281,900
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$351,900

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.Ranch
CountyCASCADE
Lot (acres)The size of the land the home sits on, from county records.0.15
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
CoolingThe type of cooling or air conditioning in the home.Central
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 · 140 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.

H
Great Falls High SchoolD+
High · Grades 9–12 · 1.3 mi
E
Mountain View Elementary SchoolC
Elementary · Grades KG–6 · 1.3 mi
M
East Middle SchoolD+
Middle · Grades 7–8 · 2.2 mi

District: Great Falls Elementary School District

Neighborhood · ZIP 59405These 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.108
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 100.54

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.15%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.17%
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.32,971
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.88 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$55,016
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$69,667
Average tempThe average temperature here across a full year.43°F
Annual precipHow much rain and melted snow falls here in a typical year.17 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.61%

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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

2017 21st Ave S 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 more than 69% of homes in Great Falls 59405
  • Costs more per square foot than 87% of homes in Great Falls 59405
  • Smaller than 69% of homes in Cascade County
  • Has a smaller lot than 84% of homes in Cascade County
  • Newer than 97% of homes in Great Falls 59405

What homes are worth in Great Falls 59405

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

This home
$167K$881K

This home is worth more than 69% of homes in Great Falls 59405.

How it measures up in Great Falls 59405

The dot is this home. The mark in the middle is the typical home in Great Falls 59405.

Estimated value$375,000
CheaperTypical $329,325Pricier

Pricier than 69% of homes nearby

Price per ft²$365
CheaperTypical $287Pricier

Pricier than 87% of homes nearby

Living area1,028 ft²
SmallerTypical 1,160 ft²Bigger

Bigger than 34% of homes nearby

Lot size0.15 ac
SmallerTypical 0.17 acBigger

Bigger than 20% of homes nearby

Year built2020
OlderTypical 1961Newer

Newer than 97% of homes nearby

How 2017 21st Ave S ranks against every home in each area.
MeasureThis homeGreat Falls 59405Cascade County
Estimated valuepricier than$375,00069% of homes58% of homes
Price per ft²pricier than$36587% of homes83% of homes
Living areabigger than1,028 ft²34% of homes31% of homes
Lot sizebigger than0.15 ac20% of homes16% of homes
Year builtnewer than202097% of homes97% of homes

About 2017 21st Ave S

How much is 2017 21st Ave S, Great Falls, MT worth?

The TopHap Estimate for 2017 21st Ave S, Great Falls, MT is $375,000 as of Sep 24, 2026. The likely range is $366,980 to $383,020. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 2017 21st Ave S, Great Falls, MT last sell?

2017 21st Ave S, Great Falls, MT last sold on Sep 14, 2026 for $123,220, according to the county's recorded deed.

How big is 2017 21st Ave S, Great Falls, MT?

2017 21st Ave S, Great Falls, MT has 3 bedrooms, 2 bathrooms, 1,028 square feet of living space and a 0.15-acre lot.

When was 2017 21st Ave S, Great Falls, MT built?

2017 21st Ave S, Great Falls, MT was built in 2020, making it 6 years old. It is a ranch home. The building has 1 story.

What schools serve 2017 21st Ave S, Great Falls, MT?

2017 21st Ave S, Great Falls, MT is assigned to Great Falls High School (high), rated D+; Mountain View Elementary School (elementary), rated C; East Middle School (middle), rated D+. All sit in Great Falls Elementary School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 2017 21st Ave S, Great Falls, MT compare to other homes in Great Falls 59405?

Among the 9,968 homes in Great Falls 59405, it is worth more than 69% of them ($375,000 against a typical $329,325), its price per square foot is higher than 87% of them ($365 against a typical $287), it is bigger than 34% of them (1,028 ft² against a typical 1,160 ft²), its lot is bigger than 20% of them (0.15 ac against a typical 0.17 ac) and it is newer than 97% of them (2020 against a typical 1961). Measured against all of Cascade County, it is worth more than 58% 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 2017 21st Ave S, Great Falls, MT?

The 2026 property tax bill for 2017 21st Ave S, Great Falls, MT was $2,038. The county assessed it at $351,900.

More homes on 21st Ave S

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