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Single Family ResidenceResidential
$557,517$550 / 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 Sep 24, 2026
Last sold for $550,000 on Mar 19, 2025

8331 MASON CIR

WESTMINSTER, CO 80031
5
Beds
2
Baths
1,014 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.
0.19 ac
Lot SizeThe size of the land the home sits on, from county records.
1970
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
9
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

$558K
$503K low$612K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$550,000 · Mar 19, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,724 (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.$31,570 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$5,630
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$25,940
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$35,980
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$505,000

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
CountyAdams
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.2013
Lot (acres)The size of the land the home sits on, from county records.0.19
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.Composition Shingle
HeatingThe type of heating system in the home.Forced Air
CoolingThe type of cooling or air conditioning in the home.Central
FireplaceWhether the home has a fireplace, and what kind.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 120 ft²Patio · 120 ft²

Transaction History(5)

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
Shaw Heights Middle SchoolC-
Middle · Grades 6–8 · 0.6 mi
E
Mesa Elementary SchoolD+
Elementary · Grades PK–5 · 1.0 mi
H
Westminster High SchoolB-
High · Grades 9–12 · 1.9 mi

District: Westminster School District 50

Neighborhood · ZIP 80031These 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.97
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.100
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.48

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.96%
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.5.6%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.6%
PopulationHow many people live in this area.40,182
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.4,768 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$106,207
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$125,051
Average tempThe average temperature here across a full year.51°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.69%

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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

8331 Mason Cir 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 97% of homes in Shaw Heights
  • Among the highest price per square foot in Westminster 80031
  • Smaller than 85% of homes in Westminster 80031
  • Has a bigger lot than 69% of homes in Shaw Heights
  • Older than 80% of homes in Westminster 80031

What homes are worth in Westminster 80031

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

This home
$185K$1.1M

This home is worth more than 62% of homes in Westminster 80031.

How it measures up in Westminster 80031

The dot is this home. The mark in the middle is the typical home in Westminster 80031.

Estimated value$557,517
CheaperTypical $505,673Pricier

Pricier than 62% of homes nearby

Price per ft²$550
CheaperTypical $311Pricier

Pricier than almost all homes nearby

Living area1,014 ft²
SmallerTypical 1,662 ft²Bigger

Bigger than 15% of homes nearby

Lot size0.19 ac
SmallerTypical 0.17 acBigger

Bigger than 63% of homes nearby

Year built1970
OlderTypical 1983Newer

Newer than 20% of homes nearby

How 8331 Mason Cir ranks against every home in each area.
MeasureThis homeShaw HeightsWestminster 80031Adams County
Estimated valuepricier than$557,51797% of homes62% of homes72% of homes
Price per ft²pricier than$55098% of homesalmost all homesalmost all homes
Living areabigger than1,014 ft²37% of homes15% of homes16% of homes
Lot sizebigger than0.19 ac69% of homes63% of homes66% of homes
Year builtnewer than197075% of homes20% of homes25% of homes

About 8331 Mason Cir

How much is 8331 Mason Cir, Westminster, CO worth?

The TopHap Estimate for 8331 Mason Cir, Westminster, CO is $557,517 as of Sep 24, 2026. The likely range is $502,833 to $612,201. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 8331 Mason Cir, Westminster, CO last sell?

8331 Mason Cir, Westminster, CO last sold on Mar 19, 2025 for $550,000, according to the county's recorded deed. TopHap holds 5 recorded sales for this parcel.

How big is 8331 Mason Cir, Westminster, CO?

8331 Mason Cir, Westminster, CO has 5 bedrooms, 2 bathrooms, 1,014 square feet of living space and a 0.19-acre lot.

When was 8331 Mason Cir, Westminster, CO built?

8331 Mason Cir, Westminster, CO was built in 1970, making it 56 years old. It is a ranch home. The building has 1 story.

What schools serve 8331 Mason Cir, Westminster, CO?

8331 Mason Cir, Westminster, CO is assigned to Shaw Heights Middle School (middle), rated C-; Mesa Elementary School (elementary), rated D+; Westminster High School (high), rated B-. All sit in Westminster School District 50. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 8331 Mason Cir, Westminster, CO compare to other homes in Westminster 80031?

Among the 12,756 homes in Westminster 80031, it is worth more than 62% of them ($557,517 against a typical $505,673), its price per square foot is higher than almost all of them ($550 against a typical $311), it is bigger than 15% of them (1,014 ft² against a typical 1,662 ft²), its lot is bigger than 63% of them (0.19 ac against a typical 0.17 ac) and it is newer than 20% of them (1970 against a typical 1983). Measured against all of Adams County, it is worth more than 72% 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 8331 Mason Cir, Westminster, CO?

The 2025 property tax bill for 8331 Mason Cir, Westminster, CO was $1,724. The county assessed it at $31,570.

More homes on Mason Cir

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