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Single Family ResidenceResidential
$502,269$238 / 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 91How 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 $414,000 on May 31, 2018

8490 MASON CIR

WESTMINSTER, CO 80031
4
Beds
2
Baths
2,106 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.
1,742 ft²
Lot SizeThe size of the land the home sits on, from county records.
1965
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
7
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

$502K
$457K low$548K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$414,000 · May 31, 2018

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,833 (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.$33,570 (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.$27,940
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$38,260
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$537,000

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.10 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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.Bi-Level
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.2018
Lot (acres)The size of the land the home sits on, from county records.0.04
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, Detached
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 90 ft²Patio · 90 ft²Porch · 260 ft²

Transaction History(7)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Foreclosure Filings(2)

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 SchoolD-
Middle · Grades 6–8 · 0.4 mi
E
Mesa Elementary SchoolC+
Elementary · Grades PK–5 · 0.8 mi
H
Westminster High SchoolD-
High · Grades 9–12 · 2.0 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%

Owner Tools

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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

8490 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 83% of homes in Shaw Heights
  • Costs less per square foot than 93% of homes in Shaw Heights
  • Bigger than 93% of homes in Shaw Heights
  • Among the smallest lots in Shaw Heights
  • Older than 84% 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
$191K$1.2M

This home is worth more than 48% 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$502,269
CheaperTypical $510,195Pricier

Pricier than 48% of homes nearby

Price per ft²$238
CheaperTypical $315Pricier

Pricier than 11% of homes nearby

Living area2,106 ft²
SmallerTypical 1,661 ft²Bigger

Bigger than 74% of homes nearby

Lot size1,742 ft²
SmallerTypical 0.17 acBigger

Bigger than 7% of homes nearby

Year built1965
OlderTypical 1983Newer

Newer than 16% of homes nearby

How 8490 Mason Cir ranks against every home in each area.
MeasureThis homeShaw HeightsWestminster 80031Adams County
Estimated valuepricier than$502,26983% of homes48% of homes58% of homes
Price per ft²pricier than$2387% of homes11% of homes17% of homes
Living areabigger than2,106 ft²93% of homes74% of homes76% of homes
Lot sizebigger than1,742 ft²almost no homes7% of homes4% of homes
Year builtnewer than196563% of homes16% of homes22% of homes

About 8490 Mason Cir

How much is 8490 Mason Cir, Westminster, CO worth?

The TopHap Estimate for 8490 Mason Cir, Westminster, CO is $502,269 as of Aug 30, 2026. The likely range is $456,781 to $547,757. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 8490 Mason Cir, Westminster, CO last sell?

8490 Mason Cir, Westminster, CO last sold on May 31, 2018 for $414,000, according to the county's recorded deed. TopHap holds 5 recorded sales for this parcel.

How big is 8490 Mason Cir, Westminster, CO?

8490 Mason Cir, Westminster, CO has 4 bedrooms, 2 bathrooms, 2,106 square feet of living space and a 0.04-acre lot.

When was 8490 Mason Cir, Westminster, CO built?

8490 Mason Cir, Westminster, CO was built in 1965, making it 61 years old. It is a bi-level home. The building has 1 story.

What schools serve 8490 Mason Cir, Westminster, CO?

8490 Mason Cir, Westminster, CO is assigned to Shaw Heights Middle School (middle), rated D-; Mesa Elementary School (elementary), rated C+; Westminster High School (high), rated D-. All sit in Westminster School District 50. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 8490 Mason Cir, Westminster, CO compare to other homes in Westminster 80031?

Among the 12,747 homes in Westminster 80031, it is worth more than 48% of them ($502,269 against a typical $510,195), its price per square foot is higher than 11% of them ($238 against a typical $315), it is bigger than 74% of them (2,106 ft² against a typical 1,661 ft²), its lot is bigger than 7% of them (1,742 ft² against a typical 0.17 ac) and it is newer than 16% of them (1965 against a typical 1983). Measured against all of Adams County, it is worth more than 58% 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 8490 Mason Cir, Westminster, CO?

The 2025 property tax bill for 8490 Mason Cir, Westminster, CO was $1,833. The county assessed it at $33,570.

More homes on Mason Cir

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