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Single Family ResidenceResidential
$993,787$351 / 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 Jul 14, 2026
Last sold for $732,500 on Oct 16, 2018

3643 ROUNDTREE CT

BOULDER, CO 80304
4
Beds
2.5
Baths
2,832 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.
3,932 ft²
Lot SizeThe size of the land the home sits on, from county records.
1981
Year BuiltThe year the home was originally built, according to county records.
8
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$994K
$947K low$1M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$732,500 · Oct 16, 2018
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$307,787
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$246,230
Loan-to-ValueHow much is still owed on the home compared to what it is worth. 80% means loans equal 80% of our estimate, so it shifts when the estimate does.70%
1st MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$586,000
ELEVATIONS CU · 4.26% 1 · recorded Oct 16, 2018
2nd MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$100,000
ELEVATIONS CU

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,773 (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.$65,878 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$25,024
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$40,854
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$60,550
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$968,800

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.Townhouse
CountyBOULDER
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.1996
Lot (acres)The size of the land the home sits on, from county records.0.09
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
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
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Patio · 192 ft²

Transaction History(1)

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
Centennial Middle SchoolB
Middle · Grades 6–8 · 0.5 mi
E
Columbine Elementary SchoolC
Elementary · Grades PK–5 · 0.7 mi
H
Boulder High SchoolA+
High · Grades 9–12 · 2.0 mi

District: Boulder Valley School District Re-2

Neighborhood · ZIP 80304These 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.126
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.94
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.46

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.33%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.12%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.4%
PopulationHow many people live in this area.26,373
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,813 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$119,821
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$151,092
Average tempThe average temperature here across a full year.49°F
Annual precipHow much rain and melted snow falls here in a typical year.19 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.69%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Owner occupied
Company ownedWhether the owner is a company or trust rather than a person.No

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

3643 Roundtree Ct 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 70% of homes in Boulder County
  • Costs less per square foot than 98% of homes in Winding Trail Village
  • Bigger than 82% of homes in Winding Trail Village
  • Has a smaller lot than 83% of homes in Boulder County

What homes are worth in Boulder 80304

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

This home
$224K$4.2M

This home is worth more than 32% of homes in Boulder 80304.

How it measures up in Boulder 80304

The dot is this home. The mark in the middle is the typical home in Boulder 80304.

Estimated value$993,787
CheaperTypical $1,315,423Pricier

Pricier than 32% of homes nearby

Price per ft²$351
CheaperTypical $622Pricier

Pricier than 5% of homes nearby

Living area2,832 ft²
SmallerTypical 1,966 ft²Bigger

Bigger than 73% of homes nearby

Lot size3,932 ft²
SmallerTypical 0.18 acBigger

Bigger than 20% of homes nearby

Year built1981
OlderTypical 1979Newer

Newer than 55% of homes nearby

How 3643 Roundtree Ct ranks against every home in each area.
MeasureThis homeWinding Trail VillageBoulder 80304Boulder County
Estimated valuepricier than$993,78763% of homes32% of homes70% of homes
Price per ft²pricier than$3512% of homes5% of homes39% of homes
Living areabigger than2,832 ft²82% of homes73% of homes77% of homes
Lot sizebigger than3,932 ft²54% of homes20% of homes17% of homes
Year builtnewer than198142% of homes55% of homes44% of homes

About 3643 Roundtree Ct

How much is 3643 Roundtree Ct, Boulder, CO worth?

The TopHap Estimate for 3643 Roundtree Ct, Boulder, CO is $993,787 as of Jul 14, 2026. The likely range is $946,909 to $1,040,665. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3643 Roundtree Ct, Boulder, CO last sell?

3643 Roundtree Ct, Boulder, CO last sold on Oct 16, 2018 for $732,500, according to the county's recorded deed.

How big is 3643 Roundtree Ct, Boulder, CO?

3643 Roundtree Ct, Boulder, CO has 4 bedrooms, 2.5 bathrooms, 2,832 square feet of living space and a 0.09-acre lot.

When was 3643 Roundtree Ct, Boulder, CO built?

3643 Roundtree Ct, Boulder, CO was built in 1981, making it 45 years old. It is a townhouse home.

What schools serve 3643 Roundtree Ct, Boulder, CO?

3643 Roundtree Ct, Boulder, CO is assigned to Centennial Middle School (middle), rated B; Columbine Elementary School (elementary), rated C; Boulder High School (high), rated A+. All sit in Boulder Valley School District Re-2. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 3643 Roundtree Ct, Boulder, CO compare to other homes in Boulder 80304?

Among the 10,450 homes in Boulder 80304, it is worth more than 32% of them ($993,787 against a typical $1,315,423), its price per square foot is higher than 5% of them ($351 against a typical $622), it is bigger than 73% of them (2,832 ft² against a typical 1,966 ft²), its lot is bigger than 20% of them (3,932 ft² against a typical 0.18 ac) and it is newer than 55% of them (1981 against a typical 1979). Measured against all of Boulder County, it is worth more than 70% 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 3643 Roundtree Ct, Boulder, CO?

The 2025 property tax bill for 3643 Roundtree Ct, Boulder, CO was $5,773. The county assessed it at $65,878.

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