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Single Family ResidenceResidential
$432,267$450 / 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 $234,600 on May 17, 2010

3540 GREY ROCK RD

HELENA, MT 59602
2
Beds
1
Baths
960 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.
1.3 ac
Lot SizeThe size of the land the home sits on, from county records.
2010
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$432K
$409K low$455K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$234,600 · May 17, 2010

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,974 (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.$385,800 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$350,300
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$385,800

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
Lot (acres)The size of the land the home sits on, from county records.1.30
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

Transaction History(3)

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.

E
Warren SchoolA-
Elementary · Grades PK–5 · 2.4 mi
H
Helena High SchoolB+
High · Grades 9–12 · 5.6 mi
M
Helena Middle SchoolB-
Middle · Grades 6–8 · 5.9 mi

District: Helena Elementary School District

Neighborhood · ZIP 59602These 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.60
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.106
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.164

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.29%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.7%
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.29,805
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.47 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$89,735
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$109,066
Average tempThe average temperature here across a full year.42°F
Annual precipHow much rain and melted snow falls here in a typical year.14 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.54%

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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

3540 Grey Rock Rd 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 78% of homes in Helena 59602
  • Costs more per square foot than 84% of homes in Lewis and Clark County
  • Smaller than 87% of homes in Helena 59602
  • Has a bigger lot than 70% of homes in Lewis and Clark County
  • Newer than 84% of homes in Lewis and Clark County

What homes are worth in Helena 59602

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

This home
$331K$1.3M

This home is worth more than 22% of homes in Helena 59602.

How it measures up in Helena 59602

The dot is this home. The mark in the middle is the typical home in Helena 59602.

Estimated value$432,267
CheaperTypical $537,872Pricier

Pricier than 22% of homes nearby

Price per ft²$450
CheaperTypical $352Pricier

Pricier than 82% of homes nearby

Living area960 ft²
SmallerTypical 1,466 ft²Bigger

Bigger than 13% of homes nearby

Lot size1.3 ac
SmallerTypical 1.1 acBigger

Bigger than 55% of homes nearby

Year built2010
OlderTypical 1997Newer

Newer than 81% of homes nearby

How 3540 Grey Rock Rd ranks against every home in each area.
MeasureThis homeHelena 59602Lewis and Clark County
Estimated valuepricier than$432,26722% of homes38% of homes
Price per ft²pricier than$45082% of homes84% of homes
Living areabigger than960 ft²13% of homes18% of homes
Lot sizebigger than1.3 ac55% of homes70% of homes
Year builtnewer than201081% of homes84% of homes

About 3540 Grey Rock Rd

How much is 3540 Grey Rock Rd, Helena, MT worth?

The TopHap Estimate for 3540 Grey Rock Rd, Helena, MT is $432,267 as of Aug 30, 2026. The likely range is $409,254 to $455,280. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3540 Grey Rock Rd, Helena, MT last sell?

3540 Grey Rock Rd, Helena, MT last sold on May 17, 2010 for $234,600, according to the county's recorded deed.

How big is 3540 Grey Rock Rd, Helena, MT?

3540 Grey Rock Rd, Helena, MT has 2 bedrooms, 1 bathrooms, 960 square feet of living space and a 1.30-acre lot.

When was 3540 Grey Rock Rd, Helena, MT built?

3540 Grey Rock Rd, Helena, MT was built in 2010, making it 16 years old. It is a ranch home. The building has 1 story.

What schools serve 3540 Grey Rock Rd, Helena, MT?

3540 Grey Rock Rd, Helena, MT is assigned to Warren School (elementary), rated A-; Helena High School (high), rated B+; Helena Middle School (middle), rated B-. All sit in Helena Elementary School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 3540 Grey Rock Rd, Helena, MT compare to other homes in Helena 59602?

Among the 12,706 homes in Helena 59602, it is worth more than 22% of them ($432,267 against a typical $537,872), its price per square foot is higher than 82% of them ($450 against a typical $352), it is bigger than 13% of them (960 ft² against a typical 1,466 ft²), its lot is bigger than 55% of them (1.3 ac against a typical 1.1 ac) and it is newer than 81% of them (2010 against a typical 1997). Measured against all of Lewis and Clark County, it is worth more than 38% 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 3540 Grey Rock Rd, Helena, MT?

The 2026 property tax bill for 3540 Grey Rock Rd, Helena, MT was $1,974. The county assessed it at $385,800.

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