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Single Family ResidenceResidential
$499,999$488 / 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 93How 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 $240,000 on Jul 2, 2020

4645 PORTSIDE WAY

BOULDER, CO 80301
2
Beds
1.5
Baths
1,024 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.
1,942 ft²
Lot SizeThe size of the land the home sits on, from county records.
1980
Year BuiltThe year the home was originally built, according to county records.
4
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

$500K
$466K low$534K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$240,000 · Jul 2, 2020
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.$331,999
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$265,599
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.34%
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.$168,000
FIRSTBANK · 4% · recorded Jul 2, 2020

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,525 (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.$27,098 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$9,690
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$17,408
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$24,906
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$398,500

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.8 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.Townhouse
CountyBOULDER
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)
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.Carport (Unspecified)
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.Deck · 378 ft²Patio · 478 ft²

Transaction History(21)

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
Heatherwood Elementary SchoolB
Elementary · Grades PK–5 · 1.5 mi
M
Nevitt Platt Middle SchoolB-
Middle · Grades 6–8 · 3.9 mi
H
Boulder High SchoolA+
High · Grades 9–12 · 5.0 mi

District: Boulder Valley School District Re-2

Neighborhood · ZIP 80301These 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.106
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.92
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.50

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.37%
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.26,811
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.855 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$101,150
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$128,644
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.16 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.Absentee owner
Company ownedWhether the owner is a company or trust rather than a person.Yes

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

4645 Portside Way 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 77% of homes in Boulder County
  • Costs more per square foot than 75% of homes in Boulder 80301
  • Smaller than 86% of homes in Boulder County
  • Has a smaller lot than 89% of homes in Boulder County

What homes are worth in Boulder 80301

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

This home
$247K$2.5M

This home is worth more than 33% of homes in Boulder 80301.

How it measures up in Boulder 80301

The dot is this home. The mark in the middle is the typical home in Boulder 80301.

Estimated value$499,999
CheaperTypical $763,491Pricier

Pricier than 33% of homes nearby

Price per ft²$488
CheaperTypical $428Pricier

Pricier than 75% of homes nearby

Living area1,024 ft²
SmallerTypical 1,586 ft²Bigger

Bigger than 31% of homes nearby

Lot size1,942 ft²
SmallerTypical 0.17 acBigger

Bigger than 31% of homes nearby

Year built1980
OlderTypical 1983Newer

Newer than 42% of homes nearby

How 4645 Portside Way ranks against every home in each area.
MeasureThis homeBoulder 80301Boulder County
Estimated valuepricier than$499,99933% of homes23% of homes
Price per ft²pricier than$48875% of homes72% of homes
Living areabigger than1,024 ft²31% of homes14% of homes
Lot sizebigger than1,942 ft²31% of homes11% of homes
Year builtnewer than198042% of homes44% of homes

About 4645 Portside Way

How much is 4645 Portside Way, Boulder, CO worth?

The TopHap Estimate for 4645 Portside Way, Boulder, CO is $499,999 as of Jul 14, 2026. The likely range is $466,472 to $533,526. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 4645 Portside Way, Boulder, CO last sell?

4645 Portside Way, Boulder, CO last sold on Jul 2, 2020 for $240,000, according to the county's recorded deed.

How big is 4645 Portside Way, Boulder, CO?

4645 Portside Way, Boulder, CO has 2 bedrooms, 1.5 bathrooms, 1,024 square feet of living space and a 0.04-acre lot.

When was 4645 Portside Way, Boulder, CO built?

4645 Portside Way, Boulder, CO was built in 1980, making it 46 years old. It is a townhouse home.

What schools serve 4645 Portside Way, Boulder, CO?

4645 Portside Way, Boulder, CO is assigned to Heatherwood Elementary School (elementary), rated B; Nevitt Platt Middle School (middle), rated B-; 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 4645 Portside Way, Boulder, CO compare to other homes in Boulder 80301?

Among the 9,298 homes in Boulder 80301, it is worth more than 33% of them ($499,999 against a typical $763,491), its price per square foot is higher than 75% of them ($488 against a typical $428), it is bigger than 31% of them (1,024 ft² against a typical 1,586 ft²), its lot is bigger than 31% of them (1,942 ft² against a typical 0.17 ac) and it is newer than 42% of them (1980 against a typical 1983). Measured against all of Boulder County, it is worth more than 23% 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 4645 Portside Way, Boulder, CO?

The 2025 property tax bill for 4645 Portside Way, Boulder, CO was $2,525. The county assessed it at $27,098.

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Assigned schools

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