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Single Family ResidenceResidential
$484,622$285 / 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 97How 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 $475,000 on Jun 2, 2021

11227 COOK ST

THORNTON, CO 80233
4
Beds
2
Baths
1,700 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.
0.24 ac
Lot SizeThe size of the land the home sits on, from county records.
1973
Year BuiltThe year the home was originally built, according to county records.
2
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

$485K
$471K low$499K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$475,000 · Jun 2, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,735 (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.$33,190 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$6,600
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$26,590
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$30,500
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$488,000

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.Split 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.2020
Lot (acres)The size of the land the home sits on, from county records.0.24
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 With Air Conditioning
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, Attached
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.Open Space

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
Woodglen Elementary SchoolD+
Elementary · Grades PK–5 · 0.5 mi
M
Century Middle SchoolC+
Middle · Grades 6–8 · 2.5 mi
H
Mountain Range High SchoolB
High · Grades 9–12 · 3.1 mi

District: Northglenn-Thornton School District 12

Neighborhood · ZIP 80233These 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.94
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.98
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.41

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.18%
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.1.7%
PopulationHow many people live in this area.51,691
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.5,551 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$81,509
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$100,105
Average tempThe average temperature here across a full year.51°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.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

11227 Cook 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 more than 73% of homes in Woodglen
  • Bigger than 67% of homes in Woodglen
  • Has a bigger lot than 88% of homes in Denver 80233
  • Older than 70% of homes in Adams County

What homes are worth in Denver 80233

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

This home
$303K$634K

This home is worth more than 69% of homes in Denver 80233.

How it measures up in Denver 80233

The dot is this home. The mark in the middle is the typical home in Denver 80233.

Estimated value$484,622
CheaperTypical $452,206Pricier

Pricier than 69% of homes nearby

Price per ft²$285
CheaperTypical $292Pricier

Pricier than 47% of homes nearby

Living area1,700 ft²
SmallerTypical 1,497 ft²Bigger

Bigger than 64% of homes nearby

Lot size0.24 ac
SmallerTypical 0.17 acBigger

Bigger than 88% of homes nearby

Year built1973
OlderTypical 1977Newer

Newer than 43% of homes nearby

How 11227 Cook St ranks against every home in each area.
MeasureThis homeWoodglenDenver 80233Adams County
Estimated valuepricier than$484,62273% of homes69% of homes52% of homes
Price per ft²pricier than$28548% of homes47% of homes47% of homes
Living areabigger than1,700 ft²67% of homes64% of homes55% of homes
Lot sizebigger than0.24 ac72% of homes88% of homes81% of homes
Year builtnewer than197342% of homes43% of homes30% of homes

About 11227 Cook St

How much is 11227 Cook St, Thornton, CO worth?

The TopHap Estimate for 11227 Cook St, Thornton, CO is $484,622 as of Sep 24, 2026. The likely range is $470,662 to $498,582. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 11227 Cook St, Thornton, CO last sell?

11227 Cook St, Thornton, CO last sold on Jun 2, 2021 for $475,000, according to the county's recorded deed.

How big is 11227 Cook St, Thornton, CO?

11227 Cook St, Thornton, CO has 4 bedrooms, 2 bathrooms, 1,700 square feet of living space and a 0.24-acre lot.

When was 11227 Cook St, Thornton, CO built?

11227 Cook St, Thornton, CO was built in 1973, making it 53 years old. It is a split level home. The building has 2 stories.

What schools serve 11227 Cook St, Thornton, CO?

11227 Cook St, Thornton, CO is assigned to Woodglen Elementary School (elementary), rated D+; Century Middle School (middle), rated C+; Mountain Range High School (high), rated B. All sit in Northglenn-Thornton School District 12. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 11227 Cook St, Thornton, CO compare to other homes in Denver 80233?

Among the 13,049 homes in Denver 80233, it is worth more than 69% of them ($484,622 against a typical $452,206), its price per square foot is higher than 47% of them ($285 against a typical $292), it is bigger than 64% of them (1,700 ft² against a typical 1,497 ft²), its lot is bigger than 88% of them (0.24 ac against a typical 0.17 ac) and it is newer than 43% of them (1973 against a typical 1977). Measured against all of Adams County, it is worth more than 52% 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 11227 Cook St, Thornton, CO?

The 2025 property tax bill for 11227 Cook St, Thornton, CO was $3,735. The county assessed it at $33,190.

More homes on Cook St

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Assigned schools

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