Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$1,215,668$250 / 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 95How 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 $11,770 on Oct 5, 2021

21 MASS AVE

HARVARD, MA 01451
4
Beds
4.5
Baths
4,857 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.
1.95 ac
Lot SizeThe size of the land the home sits on, from county records.
1993
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
9
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$1.2M
$1.2M low$1.3M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$11,770 · Oct 5, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$20,848 (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.$1,313,700 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$235,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$1,078,200
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,256,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,483,020

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.42
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
23
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
60
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
91
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
39
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
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.Cape Cod
CountyWORCESTER
Lot (acres)The size of the land the home sits on, from county records.1.95
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(11)

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
Hildreth Elementary SchoolA
Elementary · Grades PK–5 · 0.1 mi
H
The Bromfield High SchoolA+
High · Grades 9–12 · 0.2 mi
M
The Bromfield Middle SchoolA+
Middle · Grades 6–8 · 0.2 mi

District: Harvard School District

Neighborhood · ZIP 01451These 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.3
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.100
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.67

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.39%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.0%
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.6,602
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.259 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$169,474
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$236,359
Average tempThe average temperature here across a full year.48°F
Annual precipHow much rain and melted snow falls here in a typical year.48 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.50%

Owner Tools

Do you own this home?
Claim this home

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 Mass Ave 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 98% of homes in Worcester County
  • Costs less per square foot than 96% of homes in Harvard 01451
  • Among the largest homes in Worcester County
  • Has a bigger lot than 82% of homes in Worcester County
  • Newer than 77% of homes in Harvard 01451

What homes are worth in Harvard 01451

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

This home
$395K$1.9M

This home is worth more than 85% of homes in Harvard 01451.

How it measures up in Harvard 01451

The dot is this home. The mark in the middle is the typical home in Harvard 01451.

Estimated value$1,215,668
CheaperTypical $871,451Pricier

Pricier than 85% of homes nearby

Price per ft²$250
CheaperTypical $359Pricier

Pricier than 4% of homes nearby

Living area4,857 ft²
SmallerTypical 2,480 ft²Bigger

Bigger than 98% of homes nearby

Lot size1.95 ac
SmallerTypical 2.25 acBigger

Bigger than 42% of homes nearby

Year built1993
OlderTypical 1976Newer

Newer than 77% of homes nearby

How 21 Mass Ave ranks against every home in each area.
MeasureThis homeHarvard 01451Worcester County
Estimated valuepricier than$1,215,66885% of homes98% of homes
Price per ft²pricier than$2504% of homes20% of homes
Living areabigger than4,857 ft²98% of homesalmost all homes
Lot sizebigger than1.95 ac42% of homes82% of homes
Year builtnewer than199377% of homes76% of homes

About 21 Mass Ave

How much is 21 Mass Ave, Harvard, MA worth?

The TopHap Estimate for 21 Mass Ave, Harvard, MA is $1,215,668 as of Sep 24, 2026. The likely range is $1,158,086 to $1,273,250. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Mass Ave, Harvard, MA last sell?

21 Mass Ave, Harvard, MA last sold on Oct 5, 2021 for $11,770, according to the county's recorded deed. TopHap holds 5 recorded sales for this parcel.

How big is 21 Mass Ave, Harvard, MA?

21 Mass Ave, Harvard, MA has 4 bedrooms, 4.5 bathrooms, 4,857 square feet of living space and a 1.95-acre lot.

When was 21 Mass Ave, Harvard, MA built?

21 Mass Ave, Harvard, MA was built in 1993, making it 33 years old. It is a cape cod home. The building has 2 stories.

What schools serve 21 Mass Ave, Harvard, MA?

21 Mass Ave, Harvard, MA is assigned to Hildreth Elementary School (elementary), rated A; The Bromfield High School (high), rated A+; The Bromfield Middle School (middle), rated A+. All sit in Harvard School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Mass Ave, Harvard, MA compare to other homes in Harvard 01451?

Among the 2,017 homes in Harvard 01451, it is worth more than 85% of them ($1,215,668 against a typical $871,451), its price per square foot is higher than 4% of them ($250 against a typical $359), it is bigger than 98% of them (4,857 ft² against a typical 2,480 ft²), its lot is bigger than 42% of them (1.95 ac against a typical 2.25 ac) and it is newer than 77% of them (1993 against a typical 1976). Measured against all of Worcester County, it is worth more than 98% 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 Mass Ave, Harvard, MA?

The 2026 property tax bill for 21 Mass Ave, Harvard, MA was $20,848. The county assessed it at $1,313,700.

More homes on Mass Ave

Closest homes

More homes in Harvard 01451

Assigned schools

Explore the area

See this home in context

Open 21 Mass Ave on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map