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Single Family ResidenceResidential
$395,107$216 / 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 90How 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 $425,467 on Apr 22, 2025

644 CONSTITUTION AVE

BILLINGS, MT 59105
4
Beds
2
Baths
1,833 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.
0.22 ac
Lot SizeThe size of the land the home sits on, from county records.
1985
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
6
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

$395K
$356K low$434K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$425,467 · Apr 22, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,496 (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.$369,500 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$62,893
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$306,607
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$323,300
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$369,500

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.17
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
54
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
30
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
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.minimal

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
StyleThe architectural style of the home, such as ranch or colonial.Split Level
CountyYELLOWSTONE
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.2010
Lot (acres)The size of the land the home sits on, from county records.0.22
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
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No
ViewThe type of view from the property, or another feature of the site that affects value.Neighborhood / Spot
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 239 ft²Porch · 100 ft²

Transaction History(6)

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.

M
Castle Rock Middle SchoolC-
Middle · Grades 6–8 · 0.2 mi
E
Eagle Cliffs Elementary SchoolC+
Elementary · Grades KG–5 · 0.8 mi
H
Skyview High SchoolC-
High · Grades 9–12 · 0.9 mi

District: Billings Elementary School District

Neighborhood · ZIP 59105These 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.67
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.108
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.32

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.24%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.9.0%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.33,530
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.349 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$77,395
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$96,841
Average tempThe average temperature here across a full year.46°F
Annual precipHow much rain and melted snow falls here in a typical year.15 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.60%

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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

644 Constitution 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.

  • Has a smaller lot than 66% of homes in Billings 59105

What homes are worth in Billings 59105

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

This home
$215K$684K

This home is worth more than 53% of homes in Billings 59105.

How it measures up in Billings 59105

The dot is this home. The mark in the middle is the typical home in Billings 59105.

Estimated value$395,107
CheaperTypical $388,403Pricier

Pricier than 53% of homes nearby

Price per ft²$216
CheaperTypical $199Pricier

Pricier than 60% of homes nearby

Living area1,833 ft²
SmallerTypical 1,851 ft²Bigger

Bigger than 49% of homes nearby

Lot size0.22 ac
SmallerTypical 0.24 acBigger

Bigger than 34% of homes nearby

Year built1985
OlderTypical 1989Newer

Newer than 48% of homes nearby

How 644 Constitution Ave ranks against every home in each area.
MeasureThis homeBillings 59105Yellowstone County
Estimated valuepricier than$395,10753% of homes55% of homes
Price per ft²pricier than$21660% of homes59% of homes
Living areabigger than1,833 ft²49% of homes51% of homes
Lot sizebigger than0.22 ac34% of homes47% of homes
Year builtnewer than198548% of homes58% of homes

About 644 Constitution Ave

How much is 644 Constitution Ave, Billings, MT worth?

The TopHap Estimate for 644 Constitution Ave, Billings, MT is $395,107 as of Aug 30, 2026. The likely range is $356,095 to $434,119. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 644 Constitution Ave, Billings, MT last sell?

644 Constitution Ave, Billings, MT last sold on Apr 22, 2025 for $425,467, according to the county's recorded deed.

How big is 644 Constitution Ave, Billings, MT?

644 Constitution Ave, Billings, MT has 4 bedrooms, 2 bathrooms, 1,833 square feet of living space and a 0.22-acre lot.

When was 644 Constitution Ave, Billings, MT built?

644 Constitution Ave, Billings, MT was built in 1985, making it 41 years old. It is a split level home. The building has 1 story.

What schools serve 644 Constitution Ave, Billings, MT?

644 Constitution Ave, Billings, MT is assigned to Castle Rock Middle School (middle), rated C-; Eagle Cliffs Elementary School (elementary), rated C+; Skyview High School (high), rated C-. All sit in Billings Elementary School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 644 Constitution Ave, Billings, MT compare to other homes in Billings 59105?

Among the 12,604 homes in Billings 59105, it is worth more than 53% of them ($395,107 against a typical $388,403), its price per square foot is higher than 60% of them ($216 against a typical $199), it is bigger than 49% of them (1,833 ft² against a typical 1,851 ft²), its lot is bigger than 34% of them (0.22 ac against a typical 0.24 ac) and it is newer than 48% of them (1985 against a typical 1989). Measured against all of Yellowstone County, it is worth more than 55% 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 644 Constitution Ave, Billings, MT?

The 2025 property tax bill for 644 Constitution Ave, Billings, MT was $2,496. The county assessed it at $369,500.

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