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Single Family ResidenceResidential
$1,015,397$402 / 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 Sep 24, 2026

21 SUMNER ST

WOODS HOLE, MA 02543
5
Beds
3
Baths
2,528 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.
0.23 ac
Lot SizeThe size of the land the home sits on, from county records.
1950
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

$1M
$942K low$1.1M high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,336 (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.$738,600 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$324,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$414,100
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$664,500
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,496,820

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.Conventional
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.1985
Lot (acres)The size of the land the home sits on, from county records.0.23
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
FireplaceWhether the home has a fireplace, and what kind.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(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.

E
Mullen-HallC-
Elementary · Grades KG–4 · 3.0 mi
M
LawrenceB-
Middle · Grades 7–8 · 3.0 mi
H
Falmouth High SchoolC+
High · Grades 9–12 · 5.2 mi

District: Falmouth School District

Neighborhood · ZIP 02543These 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.117
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.89
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.51

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.48%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.32%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.5%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.849
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.311 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$105,931
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$156,168
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%

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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 Sumner St 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 82% of homes in Woods Hole 02543
  • Costs less per square foot than 97% of homes in Woods Hole 02543
  • Bigger than 84% of homes in Barnstable County
  • Has a smaller lot than 83% of homes in Barnstable County
  • Older than 84% of homes in Barnstable County

What homes are worth in Woods Hole 02543

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

This home
$707K$9.8M

This home is worth more than 18% of homes in Woods Hole 02543.

How it measures up in Woods Hole 02543

The dot is this home. The mark in the middle is the typical home in Woods Hole 02543.

Estimated value$1,015,397
CheaperTypical $1,523,019Pricier

Pricier than 18% of homes nearby

Price per ft²$402
CheaperTypical $826Pricier

Pricier than 3% of homes nearby

Living area2,528 ft²
SmallerTypical 2,111 ft²Bigger

Bigger than 63% of homes nearby

Lot size0.23 ac
SmallerTypical 0.34 acBigger

Bigger than 25% of homes nearby

Year built1950
OlderTypical 1952Newer

Newer than 49% of homes nearby

How 21 Sumner St ranks against every home in each area.
MeasureThis homeWoods Hole 02543Barnstable County
Estimated valuepricier than$1,015,39718% of homes71% of homes
Price per ft²pricier than$4023% of homes22% of homes
Living areabigger than2,528 ft²63% of homes84% of homes
Lot sizebigger than0.23 ac25% of homes17% of homes
Year builtnewer than195049% of homes16% of homes

About 21 Sumner St

How much is 21 Sumner St, Woods Hole, MA worth?

The TopHap Estimate for 21 Sumner St, Woods Hole, MA is $1,015,397 as of Sep 24, 2026. The likely range is $941,831 to $1,088,963. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Sumner St, Woods Hole, MA last sell?

21 Sumner St, Woods Hole, MA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 21 Sumner St, Woods Hole, MA?

21 Sumner St, Woods Hole, MA has 5 bedrooms, 3 bathrooms, 2,528 square feet of living space and a 0.23-acre lot.

When was 21 Sumner St, Woods Hole, MA built?

21 Sumner St, Woods Hole, MA was built in 1950, making it 76 years old. It is a conventional home. The building has 2 stories.

What schools serve 21 Sumner St, Woods Hole, MA?

21 Sumner St, Woods Hole, MA is assigned to Mullen-Hall (elementary), rated C-; Lawrence (middle), rated B-; Falmouth High School (high), rated C+. All sit in Falmouth School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Sumner St, Woods Hole, MA compare to other homes in Woods Hole 02543?

Among the 702 homes in Woods Hole 02543, it is worth more than 18% of them ($1,015,397 against a typical $1,523,019), its price per square foot is higher than 3% of them ($402 against a typical $826), it is bigger than 63% of them (2,528 ft² against a typical 2,111 ft²), its lot is bigger than 25% of them (0.23 ac against a typical 0.34 ac) and it is newer than 49% of them (1950 against a typical 1952). Measured against all of Barnstable County, it is worth more than 71% 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 Sumner St, Woods Hole, MA?

The 2025 property tax bill for 21 Sumner St, Woods Hole, MA was $4,336. The county assessed it at $738,600.

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