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Single Family ResidenceResidential
$1,163,172$852 / 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 91How 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 $685,000 on Dec 15, 2016

21 RIVERSIDE RD

MASHPEE, MA 02649
3
Beds
2
Baths
1,365 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.
0.58 ac
Lot SizeThe size of the land the home sits on, from county records.
1989
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
5
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$1.2M
$1.1M low$1.3M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$685,000 · Dec 15, 2016
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.$657,172
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$525,738
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.39%
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.$506,000
FIRST SB · R · recorded Jul 15, 2020

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,907 (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.$1,194,400 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$902,700
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$291,700
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,098,700
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,242,980

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.110 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.91%
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.1 percent flood zone

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.Colonial
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.2003
Lot (acres)The size of the land the home sits on, from county records.0.58
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.Electric
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(2)

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 · 3.4 mi
E
Kenneth Coombs School
Elementary · Grades PK–2 · 3.8 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.Absentee owner
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 Riverside Rd 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 78% of homes in Barnstable County
  • Costs more per square foot than 88% of homes in Barnstable County
  • Smaller than 67% of homes in Mashpee 02649
  • Has a bigger lot than 81% of homes in Mashpee 02649
  • Newer than 77% 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 77% 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$1,163,172
CheaperTypical $717,947Pricier

Pricier than 77% of homes nearby

Price per ft²$852
CheaperTypical $460Pricier

Pricier than 87% of homes nearby

Living area1,365 ft²
SmallerTypical 1,582 ft²Bigger

Bigger than 33% of homes nearby

Lot size0.58 ac
SmallerTypical 0.35 acBigger

Bigger than 81% of homes nearby

Year built1989
OlderTypical 1987Newer

Newer than 57% of homes nearby

How 21 Riverside Rd ranks against every home in each area.
MeasureThis homeMashpee 02649Barnstable County
Estimated valuepricier than$1,163,17277% of homes78% of homes
Price per ft²pricier than$85287% of homes88% of homes
Living areabigger than1,365 ft²33% of homes38% of homes
Lot sizebigger than0.58 ac81% of homes69% of homes
Year builtnewer than198957% of homes77% of homes

About 21 Riverside Rd

How much is 21 Riverside Rd, Mashpee, MA worth?

The TopHap Estimate for 21 Riverside Rd, Mashpee, MA is $1,163,172 as of Jul 14, 2026. The likely range is $1,059,935 to $1,266,409. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Riverside Rd, Mashpee, MA last sell?

21 Riverside Rd, Mashpee, MA last sold on Dec 15, 2016 for $685,000, according to the county's recorded deed.

How big is 21 Riverside Rd, Mashpee, MA?

21 Riverside Rd, Mashpee, MA has 3 bedrooms, 2 bathrooms, 1,365 square feet of living space and a 0.58-acre lot.

When was 21 Riverside Rd, Mashpee, MA built?

21 Riverside Rd, Mashpee, MA was built in 1989, making it 37 years old. It is a colonial home. The building has 2 stories.

What schools serve 21 Riverside Rd, Mashpee, MA?

21 Riverside Rd, 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 Riverside Rd, Mashpee, MA compare to other homes in Mashpee 02649?

Among the 10,262 homes in Mashpee 02649, it is worth more than 77% of them ($1,163,172 against a typical $717,947), its price per square foot is higher than 87% of them ($852 against a typical $460), it is bigger than 33% of them (1,365 ft² against a typical 1,582 ft²), its lot is bigger than 81% of them (0.58 ac against a typical 0.35 ac) and it is newer than 57% of them (1989 against a typical 1987). Measured against all of Barnstable County, it is worth more than 78% 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 Riverside Rd, Mashpee, MA?

The 2025 property tax bill for 21 Riverside Rd, Mashpee, MA was $7,907. The county assessed it at $1,194,400.

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Assigned schools

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