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Single Family ResidenceResidential
$705,105$478 / 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 89How 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 $670,000 on May 8, 2025

21 RIVER RUN

MASHPEE, MA 02649
4
Beds
2
Baths
1,476 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.
0.89 ac
Lot SizeThe size of the land the home sits on, from county records.
1988
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.

Valuation

$705K
$629K low$782K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$670,000 · May 8, 2025
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.$705,105
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$564,084

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,444 (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.$520,300 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$218,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$302,300
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$490,100
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$617,405

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.Cape Cod
CountyBARNSTABLE
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.1995
Lot (acres)The size of the land the home sits on, from county records.0.89
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.Asphalt
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
CoolingThe type of cooling or air conditioning in the home.Yes
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

Transaction History(6)

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
Mashpee Middle-High SchoolC
Middle · Grades 7–12 · 0.7 mi
E
Kenneth Coombs School
Elementary · Grades PK–2 · 1.5 mi

District: Mashpee School District

Neighborhood · ZIP 02649These 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.90
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.54

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.67%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.27%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.6%
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.15,617
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.573 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$89,782
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$119,171
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.47 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.58%

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

21 River Run 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.

  • Has a bigger lot than 90% of homes in Mashpee 02649
  • Newer than 75% of homes in Barnstable County

What homes are worth in Mashpee 02649

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

This home
$341K$3.5M

This home is worth more than 48% of homes in Mashpee 02649.

How it measures up in Mashpee 02649

The dot is this home. The mark in the middle is the typical home in Mashpee 02649.

Estimated value$705,105
CheaperTypical $717,947Pricier

Pricier than 48% of homes nearby

Price per ft²$478
CheaperTypical $460Pricier

Pricier than 55% of homes nearby

Living area1,476 ft²
SmallerTypical 1,582 ft²Bigger

Bigger than 42% of homes nearby

Lot size0.89 ac
SmallerTypical 0.35 acBigger

Bigger than 90% of homes nearby

Year built1988
OlderTypical 1987Newer

Newer than 56% of homes nearby

How 21 River Run ranks against every home in each area.
MeasureThis homeMashpee 02649Barnstable County
Estimated valuepricier than$705,10548% of homes43% of homes
Price per ft²pricier than$47855% of homes42% of homes
Living areabigger than1,476 ft²42% of homes45% of homes
Lot sizebigger than0.89 ac90% of homes80% of homes
Year builtnewer than198856% of homes75% of homes

About 21 River Run

How much is 21 River Run, Mashpee, MA worth?

The TopHap Estimate for 21 River Run, Mashpee, MA is $705,105 as of Jul 14, 2026. The likely range is $628,682 to $781,528. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 River Run, Mashpee, MA last sell?

21 River Run, Mashpee, MA last sold on May 8, 2025 for $670,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 21 River Run, Mashpee, MA?

21 River Run, Mashpee, MA has 4 bedrooms, 2 bathrooms, 1,476 square feet of living space and a 0.89-acre lot.

When was 21 River Run, Mashpee, MA built?

21 River Run, Mashpee, MA was built in 1988, making it 38 years old. It is a cape cod home. The building has 2 stories.

What schools serve 21 River Run, Mashpee, MA?

21 River Run, Mashpee, MA is assigned to Mashpee Middle-High School (middle), rated C; Kenneth Coombs School (elementary). All sit in Mashpee School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 River Run, Mashpee, MA compare to other homes in Mashpee 02649?

Among the 10,262 homes in Mashpee 02649, it is worth more than 48% of them ($705,105 against a typical $717,947), its price per square foot is higher than 55% of them ($478 against a typical $460), it is bigger than 42% of them (1,476 ft² against a typical 1,582 ft²), its lot is bigger than 90% of them (0.89 ac against a typical 0.35 ac) and it is newer than 56% of them (1988 against a typical 1987). Measured against all of Barnstable County, it is worth more than 43% 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 21 River Run, Mashpee, MA?

The 2025 property tax bill for 21 River Run, Mashpee, MA was $3,444. The county assessed it at $520,300.

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See this home in context

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