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Single Family ResidenceResidential
$384,461$406 / 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 89How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026
Last sold for $516,266 on May 20, 2025

1122 PROSPECT AVE

HELENA, MT 59601
5
Beds
2 / 1
Baths
946 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.
0.16 ac
Lot SizeThe size of the land the home sits on, from county records.
1948
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
4
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$384K
$341K low$428K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$516,266 · May 20, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,501 (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.$417,400 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$326,300
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$417,400

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
CountyLEWIS AND CLARK
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.1990
Lot (acres)The size of the land the home sits on, from county records.0.16
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.Concrete
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Central
CoolingThe type of cooling or air conditioning in the home.Central
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Detached
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 · 48 ft²

Transaction History(4)

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
Helena High SchoolB+
High · Grades 9–12 · 0.3 mi
M
Helena Middle SchoolB
Middle · Grades 6–8 · 0.4 mi
E
Jefferson SchoolA+
Elementary · Grades PK–5 · 0.5 mi

District: Helena Elementary School District

Neighborhood · ZIP 59601These 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.113
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 100.166

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.33%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.9.8%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.9%
PopulationHow many people live in this area.34,151
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.157 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$68,995
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$92,988
Average tempThe average temperature here across a full year.40°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.55%

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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

1122 Prospect Ave 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 79% of homes in Lewis and Clark County
  • Costs more per square foot than 79% of homes in Helena 59601
  • Smaller than 84% of homes in Helena 59601
  • Has a smaller lot than 87% of homes in Lewis and Clark County
  • Older than 86% of homes in Lewis and Clark County

What homes are worth in Helena 59601

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

This home
$223K$925K

This home is worth more than 28% of homes in Helena 59601.

How it measures up in Helena 59601

The dot is this home. The mark in the middle is the typical home in Helena 59601.

Estimated value$384,461
CheaperTypical $440,720Pricier

Pricier than 28% of homes nearby

Price per ft²$406
CheaperTypical $338Pricier

Pricier than 79% of homes nearby

Living area946 ft²
SmallerTypical 1,320 ft²Bigger

Bigger than 16% of homes nearby

Lot size0.16 ac
SmallerTypical 0.21 acBigger

Bigger than 27% of homes nearby

Year built1948
OlderTypical 1971Newer

Newer than 29% of homes nearby

How 1122 Prospect Ave ranks against every home in each area.
MeasureThis homeSouth CentralHelena 59601Lewis and Clark County
Estimated valuepricier than$384,46135% of homes28% of homes21% of homes
Price per ft²pricier than$40677% of homes79% of homes72% of homes
Living areabigger than946 ft²20% of homes16% of homes17% of homes
Lot sizebigger than0.16 ac55% of homes27% of homes13% of homes
Year builtnewer than194868% of homes29% of homes14% of homes

About 1122 Prospect Ave

How much is 1122 Prospect Ave, Helena, MT worth?

The TopHap Estimate for 1122 Prospect Ave, Helena, MT is $384,461 as of Oct 21, 2026. The likely range is $340,784 to $428,138. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 1122 Prospect Ave, Helena, MT last sell?

1122 Prospect Ave, Helena, MT last sold on May 20, 2025 for $516,266, according to the county's recorded deed.

How big is 1122 Prospect Ave, Helena, MT?

1122 Prospect Ave, Helena, MT has 5 bedrooms, 2 bathrooms, 946 square feet of living space and a 0.16-acre lot.

When was 1122 Prospect Ave, Helena, MT built?

1122 Prospect Ave, Helena, MT was built in 1948, making it 78 years old. It is a ranch home. The building has 1 story.

What schools serve 1122 Prospect Ave, Helena, MT?

1122 Prospect Ave, Helena, MT is assigned to Helena High School (high), rated B+; Helena Middle School (middle), rated B; Jefferson School (elementary), rated A+. All sit in Helena Elementary School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 1122 Prospect Ave, Helena, MT compare to other homes in Helena 59601?

Among the 11,463 homes in Helena 59601, it is worth more than 28% of them ($384,461 against a typical $440,720), its price per square foot is higher than 79% of them ($406 against a typical $338), it is bigger than 16% of them (946 ft² against a typical 1,320 ft²), its lot is bigger than 27% of them (0.16 ac against a typical 0.21 ac) and it is newer than 29% of them (1948 against a typical 1971). Measured against all of Lewis and Clark County, it is worth more than 21% 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 1122 Prospect Ave, Helena, MT?

The 2026 property tax bill for 1122 Prospect Ave, Helena, MT was $2,501. The county assessed it at $417,400.

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