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Single Family ResidenceResidential
$498,979$567 / 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 94How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026
Last sold for $290,000 on Apr 16, 2021

18 MANSION ST

WEST HARWICH, MA 02671
3
Beds
1.5
Baths
880 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.
0.11 ac
Lot SizeThe size of the land the home sits on, from county records.
1958
Year BuiltThe year the home was originally built, according to county records.
1
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

$499K
$470K low$528K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$290,000 · Apr 16, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,287 (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.$387,000 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$155,300
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$231,700
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$455,145

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.40 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.62%
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.Ranch
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.1975
Lot (acres)The size of the land the home sits on, from county records.0.11
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.Hot Water
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(4)

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
Harwich Elementary SchoolB
Elementary · Grades PK–4 · 1.9 mi
H
Monomoy Regional High SchoolB-
High · Grades 8–12 · 2.8 mi
M
Monomoy Regional Middle SchoolB
Middle · Grades 5–7 · 7.6 mi

District: Monomoy Regional School District

Neighborhood · ZIP 02671These 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.148
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.96
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.42

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.45%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.24%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.8%
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.758
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.525 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$87,747
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$132,131
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%

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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

18 Mansion 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 87% of homes in Barnstable County
  • Smaller than 89% of homes in West Harwich 02671
  • Among the smallest lots in West Harwich 02671
  • Older than 79% of homes in Barnstable County

What homes are worth in West Harwich 02671

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

This home
$167K$3.3M

This home is worth more than 17% of homes in West Harwich 02671.

How it measures up in West Harwich 02671

The dot is this home. The mark in the middle is the typical home in West Harwich 02671.

Estimated value$498,979
CheaperTypical $795,408Pricier

Pricier than 17% of homes nearby

Price per ft²$567
CheaperTypical $579Pricier

Pricier than 47% of homes nearby

Living area880 ft²
SmallerTypical 1,570 ft²Bigger

Bigger than 11% of homes nearby

Lot size0.11 ac
SmallerTypical 0.29 acBigger

Smaller than almost all homes nearby

Year built1958
OlderTypical 1967Newer

Newer than 39% of homes nearby

How 18 Mansion St ranks against every home in each area.
MeasureThis homeWest Harwich 02671Barnstable County
Estimated valuepricier than$498,97917% of homes13% of homes
Price per ft²pricier than$56747% of homes63% of homes
Living areabigger than880 ft²11% of homes11% of homes
Lot sizebigger than0.11 acalmost no homes3% of homes
Year builtnewer than195839% of homes21% of homes

About 18 Mansion St

How much is 18 Mansion St, West Harwich, MA worth?

The TopHap Estimate for 18 Mansion St, West Harwich, MA is $498,979 as of Oct 21, 2026. The likely range is $469,641 to $528,317. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 18 Mansion St, West Harwich, MA last sell?

18 Mansion St, West Harwich, MA last sold on Apr 16, 2021 for $290,000, according to the county's recorded deed. TopHap holds 4 recorded sales for this parcel.

How big is 18 Mansion St, West Harwich, MA?

18 Mansion St, West Harwich, MA has 3 bedrooms, 1.5 bathrooms, 880 square feet of living space and a 0.11-acre lot.

When was 18 Mansion St, West Harwich, MA built?

18 Mansion St, West Harwich, MA was built in 1958, making it 68 years old. It is a ranch home. The building has 1 story.

What schools serve 18 Mansion St, West Harwich, MA?

18 Mansion St, West Harwich, MA is assigned to Harwich Elementary School (elementary), rated B; Monomoy Regional High School (high), rated B-; Monomoy Regional Middle School (middle), rated B. All sit in Monomoy Regional School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 18 Mansion St, West Harwich, MA compare to other homes in West Harwich 02671?

Among the 1,379 homes in West Harwich 02671, it is worth more than 17% of them ($498,979 against a typical $795,408), its price per square foot is higher than 47% of them ($567 against a typical $579), it is bigger than 11% of them (880 ft² against a typical 1,570 ft²), its lot is bigger than almost none of them (0.11 ac against a typical 0.29 ac) and it is newer than 39% of them (1958 against a typical 1967). Measured against all of Barnstable County, it is worth more than 13% 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 18 Mansion St, West Harwich, MA?

The 2025 property tax bill for 18 Mansion St, West Harwich, MA was $2,287. The county assessed it at $387,000.

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