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Single Family ResidenceResidential
$4,043,595$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 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 $3,700,000 on Aug 14, 2025

21A FARM ST

DOVER, MA 02030
5
Beds
5 / 2
Baths
10,068 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.
5.23 ac
Lot SizeThe size of the land the home sits on, from county records.
1991
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
17
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$4M
$3.8M low$4.3M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$3,700,000 · Aug 14, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$40,506 (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.$3,619,800 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$1,196,100
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$2,423,700
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$3,567,700
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$3,773,905

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyNORFOLK
Lot (acres)The size of the land the home sits on, from county records.5.23
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.Hot Water
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.In-Ground Pool

Transaction History(7)

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
ChickeringA+
Elementary · Grades PK–5 · 1.6 mi
M
Dover-Sherborn Middle SchoolA+
Middle · Grades 6–8 · 1.9 mi
H
Dover-Sherborn High SchoolA+
High · Grades 9–12 · 2.1 mi

District: Dover-Sherborn School District

Neighborhood · ZIP 02030These 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.20
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 100.64

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.96%
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.1.9%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.3%
PopulationHow many people live in this area.6,156
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.395 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$255,888
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$370,229
Average tempThe average temperature here across a full year.49°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.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

21a Farm 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.

  • Among the most valuable homes in Norfolk County
  • Costs less per square foot than 77% of homes in Dover 02030
  • Among the largest homes in Norfolk County
  • Has a bigger lot than 94% of homes in Norfolk County
  • Newer than 82% of homes in Norfolk County

What homes are worth in Dover 02030

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

This home
$718K$5.1M

This home is worth more than 95% of homes in Dover 02030.

How it measures up in Dover 02030

The dot is this home. The mark in the middle is the typical home in Dover 02030.

Estimated value$4,043,595
CheaperTypical $1,787,656Pricier

Pricier than 95% of homes nearby

Price per ft²$402
CheaperTypical $458Pricier

Pricier than 23% of homes nearby

Living area10,068 ft²
SmallerTypical 3,931 ft²Bigger

Bigger than 97% of homes nearby

Lot size5.23 ac
SmallerTypical 1.27 acBigger

Bigger than 88% of homes nearby

Year built1991
OlderTypical 1971Newer

Newer than 70% of homes nearby

How 21a Farm St ranks against every home in each area.
MeasureThis homeDover 02030Norfolk County
Estimated valuepricier than$4,043,59595% of homesalmost all homes
Price per ft²pricier than$40223% of homes36% of homes
Living areabigger than10,068 ft²97% of homesalmost all homes
Lot sizebigger than5.23 ac88% of homes94% of homes
Year builtnewer than199170% of homes82% of homes

About 21a Farm St

How much is 21a Farm St, Dover, MA worth?

The TopHap Estimate for 21a Farm St, Dover, MA is $4,043,595 as of Oct 21, 2026. The likely range is $3,813,487 to $4,273,703. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21a Farm St, Dover, MA last sell?

21a Farm St, Dover, MA last sold on Aug 14, 2025 for $3,700,000, according to the county's recorded deed. TopHap holds 4 recorded sales for this parcel.

How big is 21a Farm St, Dover, MA?

21a Farm St, Dover, MA has 5 bedrooms, 5 bathrooms, 10,068 square feet of living space and a 5.23-acre lot.

When was 21a Farm St, Dover, MA built?

21a Farm St, Dover, MA was built in 1991, making it 35 years old. The building has 2 stories.

What schools serve 21a Farm St, Dover, MA?

21a Farm St, Dover, MA is assigned to Chickering (elementary), rated A+; Dover-Sherborn Middle School (middle), rated A+; Dover-Sherborn High School (high), rated A+. All sit in Dover-Sherborn School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21a Farm St, Dover, MA compare to other homes in Dover 02030?

Among the 2,024 homes in Dover 02030, it is worth more than 95% of them ($4,043,595 against a typical $1,787,656), its price per square foot is higher than 23% of them ($402 against a typical $458), it is bigger than 97% of them (10,068 ft² against a typical 3,931 ft²), its lot is bigger than 88% of them (5.23 ac against a typical 1.27 ac) and it is newer than 70% of them (1991 against a typical 1971). Measured against all of Norfolk County, it is worth more than almost all 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 21a Farm St, Dover, MA?

The 2026 property tax bill for 21a Farm St, Dover, MA was $40,506. The county assessed it at $3,619,800.

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