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Single Family ResidenceResidential
$584,973$295 / 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 $346,000 on Feb 3, 2016

6643 S WASHINGTON ST

CENTENNIAL, CO 80121
3
Beds
2
Baths
1,980 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.
0.27 ac
Lot SizeThe size of the land the home sits on, from county records.
1959
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

$585K
$565K low$604K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$346,000 · Feb 3, 2016

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,553 (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.$35,092 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$35,838
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$573,400

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.43
10
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
32
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
77
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
25
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
75
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.6 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.6%
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.Ranch
CountyARAPAHOE
Lot (acres)The size of the land the home sits on, from county records.0.27
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
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
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.Neighborhood
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Patio · 472 ft²Porch · 312 ft²

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
Gaskill Elementary SchoolA
Elementary · Grades KG–5 · 0.3 mi
M
Euclid Middle SchoolA-
Middle · Grades 6–8 · 0.9 mi
H
Arapahoe High SchoolB
High · Grades 9–12 · 1.3 mi

District: Littleton School District 6

Neighborhood · ZIP 80121These 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.67
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.97
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.97%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.36%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.8%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.3%
PopulationHow many people live in this area.19,187
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,557 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$146,212
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$196,212
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.18 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

6643 S Washington 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 76% of homes in Greenwood Village
  • Costs less per square foot than 74% of homes in Greenwood Village
  • Smaller than 70% of homes in Greenwood Village
  • Has a bigger lot than 85% of homes in Arapahoe County
  • Older than 94% of homes in Greenwood Village

What homes are worth in Littleton 80121

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

This home
$412K$4.4M

This home is worth more than 28% of homes in Littleton 80121.

How it measures up in Littleton 80121

The dot is this home. The mark in the middle is the typical home in Littleton 80121.

Estimated value$584,973
CheaperTypical $678,177Pricier

Pricier than 28% of homes nearby

Price per ft²$295
CheaperTypical $330Pricier

Pricier than 32% of homes nearby

Living area1,980 ft²
SmallerTypical 2,345 ft²Bigger

Bigger than 32% of homes nearby

Lot size0.27 ac
SmallerTypical 0.25 acBigger

Bigger than 57% of homes nearby

Year built1959
OlderTypical 1971Newer

Newer than 15% of homes nearby

How 6643 S Washington St ranks against every home in each area.
MeasureThis homeGreenwood VillageLittleton 80121Arapahoe County
Estimated valuepricier than$584,97324% of homes28% of homes65% of homes
Price per ft²pricier than$29526% of homes32% of homes66% of homes
Living areabigger than1,980 ft²30% of homes32% of homes53% of homes
Lot sizebigger than0.27 ac61% of homes57% of homes85% of homes
Year builtnewer than19596% of homes15% of homes9% of homes

About 6643 S Washington St

How much is 6643 S Washington St, Centennial, CO worth?

The TopHap Estimate for 6643 S Washington St, Centennial, CO is $584,973 as of Sep 24, 2026. The likely range is $565,486 to $604,460. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 6643 S Washington St, Centennial, CO last sell?

6643 S Washington St, Centennial, CO last sold on Feb 3, 2016 for $346,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 6643 S Washington St, Centennial, CO?

6643 S Washington St, Centennial, CO has 3 bedrooms, 2 bathrooms, 1,980 square feet of living space and a 0.27-acre lot.

When was 6643 S Washington St, Centennial, CO built?

6643 S Washington St, Centennial, CO was built in 1959, making it 67 years old. It is a ranch home. The building has 1 story.

What schools serve 6643 S Washington St, Centennial, CO?

6643 S Washington St, Centennial, CO is assigned to Gaskill Elementary School (elementary), rated A; Euclid Middle School (middle), rated A-; Arapahoe High School (high), rated B. All sit in Littleton School District 6. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 6643 S Washington St, Centennial, CO compare to other homes in Littleton 80121?

Among the 6,801 homes in Littleton 80121, it is worth more than 28% of them ($584,973 against a typical $678,177), its price per square foot is higher than 32% of them ($295 against a typical $330), it is bigger than 32% of them (1,980 ft² against a typical 2,345 ft²), its lot is bigger than 57% of them (0.27 ac against a typical 0.25 ac) and it is newer than 15% of them (1959 against a typical 1971). Measured against all of Arapahoe County, it is worth more than 65% 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 6643 S Washington St, Centennial, CO?

The 2025 property tax bill for 6643 S Washington St, Centennial, CO was $4,553. The county assessed it at $35,092.

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