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Single Family ResidenceResidential
$676,741$451 / 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 90How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026

21 BLACK DUCK LN

WEST YARMOUTH, MA 02673
2
Beds
1
Baths
1,500 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.
1975
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
6
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$677K
$612K low$742K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,859 (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.$545,100 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$147,900
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$397,200
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$534,280

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.Ranch
CountyBARNSTABLE
Lot (acres)The size of the land the home sits on, from county records.0.23
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
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(5)

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.

H
Dennis Yarmouth Regional High SchoolC
High · Grades 9–12 · 1.4 mi
E
Station Avenue Elementary SchoolB+
Elementary · Grades KG–3 · 1.4 mi
M
Mattacheese Middle SchoolB-
Middle · Grades 6–8 · 1.7 mi

District: Dennis-Yarmouth School District

Neighborhood · ZIP 02673These 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.112
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.98
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.47

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.65%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.18%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.2%
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.9,344
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.797 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$70,652
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$94,335
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.44 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 Black Duck Ln 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 74% of homes in West Yarmouth 02673
  • Bigger than 73% of homes in West Yarmouth 02673
  • Has a smaller lot than 81% of homes in Barnstable County
  • Newer than 67% of homes in West Yarmouth 02673

What homes are worth in West Yarmouth 02673

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

This home
$154K$2.1M

This home is worth more than 74% of homes in West Yarmouth 02673.

How it measures up in West Yarmouth 02673

The dot is this home. The mark in the middle is the typical home in West Yarmouth 02673.

Estimated value$676,741
CheaperTypical $575,177Pricier

Pricier than 74% of homes nearby

Price per ft²$451
CheaperTypical $492Pricier

Pricier than 36% of homes nearby

Living area1,500 ft²
SmallerTypical 1,224 ft²Bigger

Bigger than 73% of homes nearby

Lot size0.23 ac
SmallerTypical 0.26 acBigger

Bigger than 40% of homes nearby

Year built1975
OlderTypical 1970Newer

Newer than 67% of homes nearby

How 21 Black Duck Ln ranks against every home in each area.
MeasureThis homeWest Yarmouth 02673Barnstable County
Estimated valuepricier than$676,74174% of homes41% of homes
Price per ft²pricier than$45136% of homes37% of homes
Living areabigger than1,500 ft²73% of homes46% of homes
Lot sizebigger than0.23 ac40% of homes19% of homes
Year builtnewer than197567% of homes48% of homes

About 21 Black Duck Ln

How much is 21 Black Duck Ln, West Yarmouth, MA worth?

The TopHap Estimate for 21 Black Duck Ln, West Yarmouth, MA is $676,741 as of Aug 30, 2026. The likely range is $611,909 to $741,573. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Black Duck Ln, West Yarmouth, MA last sell?

21 Black Duck Ln, West Yarmouth, MA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 21 Black Duck Ln, West Yarmouth, MA?

21 Black Duck Ln, West Yarmouth, MA has 2 bedrooms, 1 bathrooms, 1,500 square feet of living space and a 0.23-acre lot.

When was 21 Black Duck Ln, West Yarmouth, MA built?

21 Black Duck Ln, West Yarmouth, MA was built in 1975, making it 51 years old. It is a ranch home. The building has 1 story.

What schools serve 21 Black Duck Ln, West Yarmouth, MA?

21 Black Duck Ln, West Yarmouth, MA is assigned to Dennis Yarmouth Regional High School (high), rated C; Station Avenue Elementary School (elementary), rated B+; Mattacheese Middle School (middle), rated B-. All sit in Dennis-Yarmouth School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Black Duck Ln, West Yarmouth, MA compare to other homes in West Yarmouth 02673?

Among the 6,057 homes in West Yarmouth 02673, it is worth more than 74% of them ($676,741 against a typical $575,177), its price per square foot is higher than 36% of them ($451 against a typical $492), it is bigger than 73% of them (1,500 ft² against a typical 1,224 ft²), its lot is bigger than 40% of them (0.23 ac against a typical 0.26 ac) and it is newer than 67% of them (1975 against a typical 1970). Measured against all of Barnstable County, it is worth more than 41% 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 Black Duck Ln, West Yarmouth, MA?

The 2025 property tax bill for 21 Black Duck Ln, West Yarmouth, MA was $3,859. The county assessed it at $545,100.

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