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Single Family ResidenceResidential
$619,926$286 / 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 97How 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
Last sold for $318,000 on Mar 3, 2017

21 KNOLL RD

PLYMOUTH, MA 02360
4
Beds
2.5
Baths
2,170 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.
0.89 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.
8
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$620K
$600K low$640K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$318,000 · Mar 3, 2017

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,081 (2026)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$564,200 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$265,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$290,800
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$546,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$682,217

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.73 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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.Raised Ranch
CountyPLYMOUTH
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.1978
Lot (acres)The size of the land the home sits on, from county records.0.89
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

Transaction History(13)

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 Elementary SchoolB+
Elementary · Grades KG–5 · 1.2 mi
M
Plymouth Commun Intermediate SchoolC
Middle · Grades 6–8 · 2.9 mi
H
Plymouth North High SchoolC-
High · Grades 9–12 · 3.4 mi

District: Plymouth School District

Neighborhood · ZIP 02360These 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.106
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.92
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.64

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.91%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.30%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.9%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.2%
PopulationHow many people live in this area.54,825
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.557 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$108,252
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$138,022
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.49 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.52%

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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 Knoll 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.

  • Costs less per square foot than 89% of homes in Plymouth County
  • Bigger than 70% of homes in Plymouth County
  • Has a bigger lot than 81% of homes in Plymouth 02360

What homes are worth in Plymouth 02360

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

This home
$252K$1.5M

This home is worth more than 42% of homes in Plymouth 02360.

How it measures up in Plymouth 02360

The dot is this home. The mark in the middle is the typical home in Plymouth 02360.

Estimated value$619,926
CheaperTypical $654,967Pricier

Pricier than 42% of homes nearby

Price per ft²$286
CheaperTypical $370Pricier

Pricier than 12% of homes nearby

Living area2,170 ft²
SmallerTypical 1,791 ft²Bigger

Bigger than 69% of homes nearby

Lot size0.89 ac
SmallerTypical 0.46 acBigger

Bigger than 81% of homes nearby

Year built1975
OlderTypical 1982Newer

Newer than 42% of homes nearby

How 21 Knoll Rd ranks against every home in each area.
MeasureThis homePlymouth 02360Plymouth County
Estimated valuepricier than$619,92642% of homes47% of homes
Price per ft²pricier than$28612% of homes11% of homes
Living areabigger than2,170 ft²69% of homes70% of homes
Lot sizebigger than0.89 ac81% of homes69% of homes
Year builtnewer than197542% of homes58% of homes

About 21 Knoll Rd

How much is 21 Knoll Rd, Plymouth, MA worth?

The TopHap Estimate for 21 Knoll Rd, Plymouth, MA is $619,926 as of Sep 24, 2026. The likely range is $600,221 to $639,631. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Knoll Rd, Plymouth, MA last sell?

21 Knoll Rd, Plymouth, MA last sold on Mar 3, 2017 for $318,000, according to the county's recorded deed. TopHap holds 4 recorded sales for this parcel.

How big is 21 Knoll Rd, Plymouth, MA?

21 Knoll Rd, Plymouth, MA has 4 bedrooms, 2.5 bathrooms, 2,170 square feet of living space and a 0.89-acre lot.

When was 21 Knoll Rd, Plymouth, MA built?

21 Knoll Rd, Plymouth, MA was built in 1975, making it 51 years old. It is a raised ranch home. The building has 1 story.

What schools serve 21 Knoll Rd, Plymouth, MA?

21 Knoll Rd, Plymouth, MA is assigned to West Elementary School (elementary), rated B+; Plymouth Commun Intermediate School (middle), rated C; Plymouth North High School (high), rated C-. All sit in Plymouth School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Knoll Rd, Plymouth, MA compare to other homes in Plymouth 02360?

Among the 25,198 homes in Plymouth 02360, it is worth more than 42% of them ($619,926 against a typical $654,967), its price per square foot is higher than 12% of them ($286 against a typical $370), it is bigger than 69% of them (2,170 ft² against a typical 1,791 ft²), its lot is bigger than 81% of them (0.89 ac against a typical 0.46 ac) and it is newer than 42% of them (1975 against a typical 1982). Measured against all of Plymouth County, it is worth more than 47% 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 Knoll Rd, Plymouth, MA?

The 2026 property tax bill for 21 Knoll Rd, Plymouth, MA was $7,081. The county assessed it at $564,200.

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