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Single Family ResidenceResidential
$353,930$223 / 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 95How 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 $140,400 on Jan 12, 2007

109 S MONROE ST

BOULDER, MT 59632
3
Beds
2
Baths
1,584 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.
0.18 ac
Lot SizeThe size of the land the home sits on, from county records.
1920
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
5
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
3
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$354K
$337K low$371K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$140,400 · Jan 12, 2007

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,079 (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.$349,600 (2025)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$264,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$349,600

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.38 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.51%

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.Historical
CountyJEFFERSON
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.1975
Lot (acres)The size of the land the home sits on, from county records.0.18
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.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 ft²Porch · 108 ft²

Transaction History(2)

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
Boulder 7-8 SchoolA
Middle · Grades 7–8 · 0.1 mi
E
Boulder Elementary SchoolA-
Elementary · Grades PK–6 · 0.1 mi
H
Jefferson High SchoolD+
High · Grades 9–12 · 0.3 mi

District: Jefferson High School District

Neighborhood · ZIP 59632These 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.136
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.102
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.173

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.93%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.19%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.2%
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.2,840
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.6 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$67,225
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$90,916
Average tempThe average temperature here across a full year.37°F
Annual precipHow much rain and melted snow falls here in a typical year.23 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.59%

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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

109 S Monroe St 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 85% of homes in Jefferson County
  • Costs less per square foot than 93% of homes in Jefferson County
  • Bigger than 74% of homes in Boulder 59632
  • Has a smaller lot than 94% of homes in Jefferson County
  • Older than 93% of homes in Jefferson County

What homes are worth in Boulder 59632

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

This home
$173K$1.1M

This home is worth more than 39% of homes in Boulder 59632.

How it measures up in Boulder 59632

The dot is this home. The mark in the middle is the typical home in Boulder 59632.

Estimated value$353,930
CheaperTypical $388,630Pricier

Pricier than 39% of homes nearby

Price per ft²$223
CheaperTypical $317Pricier

Pricier than 16% of homes nearby

Living area1,584 ft²
SmallerTypical 1,216 ft²Bigger

Bigger than 74% of homes nearby

Lot size0.18 ac
SmallerTypical 0.56 acBigger

Bigger than 11% of homes nearby

Year built1920
OlderTypical 1979Newer

Newer than 13% of homes nearby

How 109 S Monroe St ranks against every home in each area.
MeasureThis homeBoulder 59632Jefferson County
Estimated valuepricier than$353,93039% of homes15% of homes
Price per ft²pricier than$22316% of homes7% of homes
Living areabigger than1,584 ft²74% of homes58% of homes
Lot sizebigger than0.18 ac11% of homes6% of homes
Year builtnewer than192013% of homes7% of homes

About 109 S Monroe St

How much is 109 S Monroe St, Boulder, MT worth?

The TopHap Estimate for 109 S Monroe St, Boulder, MT is $353,930 as of Aug 30, 2026. The likely range is $337,112 to $370,748. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 109 S Monroe St, Boulder, MT last sell?

109 S Monroe St, Boulder, MT last sold on Jan 12, 2007 for $140,400, according to the county's recorded deed.

How big is 109 S Monroe St, Boulder, MT?

109 S Monroe St, Boulder, MT has 3 bedrooms, 2 bathrooms, 1,584 square feet of living space and a 0.18-acre lot.

When was 109 S Monroe St, Boulder, MT built?

109 S Monroe St, Boulder, MT was built in 1920, making it 106 years old. It is a historical home. The building has 2 stories.

What schools serve 109 S Monroe St, Boulder, MT?

109 S Monroe St, Boulder, MT is assigned to Boulder 7-8 School (middle), rated A; Boulder Elementary School (elementary), rated A-; Jefferson High School (high), rated D+. All sit in Jefferson High School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 109 S Monroe St, Boulder, MT compare to other homes in Boulder 59632?

Among the 1,000 homes in Boulder 59632, it is worth more than 39% of them ($353,930 against a typical $388,630), its price per square foot is higher than 16% of them ($223 against a typical $317), it is bigger than 74% of them (1,584 ft² against a typical 1,216 ft²), its lot is bigger than 11% of them (0.18 ac against a typical 0.56 ac) and it is newer than 13% of them (1920 against a typical 1979). Measured against all of Jefferson County, it is worth more than 15% 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 109 S Monroe St, Boulder, MT?

The 2025 property tax bill for 109 S Monroe St, Boulder, MT was $2,079. The county assessed it at $349,600.

More homes on S Monroe St

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