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Single Family ResidenceResidential
$1,681,272$408 / 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 $168,000 on Oct 17, 2002

644 RIVER RD

MARSTONS MILLS, MA 02648
4
Beds
4 / 1
Baths
4,119 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.
1.84 ac
Lot SizeThe size of the land the home sits on, from county records.
2004
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
8
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$1.7M
$1.5M low$1.8M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$168,000 · Oct 17, 2002

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$14,724 (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.$1,820,000 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$263,700
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$1,556,300
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,645,400

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.49
70
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
13
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
48
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
86
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
29
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.15 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.34%
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.Cape Cod
CountyBarnstable
Lot (acres)The size of the land the home sits on, from county records.1.84
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Forced Air
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

Transaction History(8)

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
West Villages Elementary SchoolA
Elementary · Grades KG–3 · 2.0 mi
M
Barnstable Intermediate SchoolC
Middle · Grades 6–7 · 5.5 mi
H
Barnstable High SchoolD
High · Grades 8–12 · 5.5 mi

District: Barnstable School District

Neighborhood · ZIP 02648These 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.41
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.93
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.90%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.23%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.2.5%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.5%
PopulationHow many people live in this area.7,585
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.734 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$113,141
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$133,532
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.46 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.58%

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

644 River 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 97% of homes in Marstons Mills 02648
  • Costs less per square foot than 78% of homes in Barnstable County
  • Bigger than 98% of homes in Marstons Mills 02648
  • Has a bigger lot than 95% of homes in Barnstable County
  • Newer than 97% of homes in Marstons Mills 02648

What homes are worth in Marstons Mills 02648

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

This home
$424K$2.7M

This home is worth more than 97% of homes in Marstons Mills 02648.

How it measures up in Marstons Mills 02648

The dot is this home. The mark in the middle is the typical home in Marstons Mills 02648.

Estimated value$1,681,272
CheaperTypical $658,165Pricier

Pricier than 97% of homes nearby

Price per ft²$408
CheaperTypical $428Pricier

Pricier than 41% of homes nearby

Living area4,119 ft²
SmallerTypical 1,627 ft²Bigger

Bigger than 98% of homes nearby

Lot size1.84 ac
SmallerTypical 0.56 acBigger

Bigger than 94% of homes nearby

Year built2004
OlderTypical 1984Newer

Newer than 97% of homes nearby

How 644 River Rd ranks against every home in each area.
MeasureThis homeMarstons Mills 02648Barnstable County
Estimated valuepricier than$1,681,27297% of homes90% of homes
Price per ft²pricier than$40841% of homes22% of homes
Living areabigger than4,119 ft²98% of homes98% of homes
Lot sizebigger than1.84 ac94% of homes95% of homes
Year builtnewer than200497% of homes92% of homes

About 644 River Rd

How much is 644 River Rd, Marstons Mills, MA worth?

The TopHap Estimate for 644 River Rd, Marstons Mills, MA is $1,681,272 as of Jul 14, 2026. The likely range is $1,532,302 to $1,830,242. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 644 River Rd, Marstons Mills, MA last sell?

644 River Rd, Marstons Mills, MA last sold on Oct 17, 2002 for $168,000, according to the county's recorded deed.

How big is 644 River Rd, Marstons Mills, MA?

644 River Rd, Marstons Mills, MA has 4 bedrooms, 4 bathrooms, 4,119 square feet of living space and a 1.84-acre lot.

When was 644 River Rd, Marstons Mills, MA built?

644 River Rd, Marstons Mills, MA was built in 2004, making it 22 years old. It is a cape cod home. The building has 2 stories.

What schools serve 644 River Rd, Marstons Mills, MA?

644 River Rd, Marstons Mills, MA is assigned to West Villages Elementary School (elementary), rated A; Barnstable Intermediate School (middle), rated C; Barnstable High School (high), rated D. All sit in Barnstable School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 644 River Rd, Marstons Mills, MA compare to other homes in Marstons Mills 02648?

Among the 3,149 homes in Marstons Mills 02648, it is worth more than 97% of them ($1,681,272 against a typical $658,165), its price per square foot is higher than 41% of them ($408 against a typical $428), it is bigger than 98% of them (4,119 ft² against a typical 1,627 ft²), its lot is bigger than 94% of them (1.84 ac against a typical 0.56 ac) and it is newer than 97% of them (2004 against a typical 1984). Measured against all of Barnstable County, it is worth more than 90% 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 644 River Rd, Marstons Mills, MA?

The 2025 property tax bill for 644 River Rd, Marstons Mills, MA was $14,724. The county assessed it at $1,820,000.

More homes on River Rd

Closest homes

More homes in Marstons Mills 02648

Assigned schools

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See this home in context

Open 644 River Rd on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

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