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Single Family ResidenceResidential
$1,268,876$614 / 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 93How 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 $527,500 on Jul 30, 2001

21 WHITCOMB ST

BELMONT, MA 02478
4
Beds
3 / 2
Baths
2,067 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.
0.21 ac
Lot SizeThe size of the land the home sits on, from county records.
1893
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
7
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$1.3M
$1.2M low$1.4M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$527,500 · Jul 30, 2001

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$13,805 (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.$1,212,000 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$683,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$529,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,267,395

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.Colonial
CountyMIDDLESEX
Lot (acres)The size of the land the home sits on, from county records.0.21
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
HeatingThe type of heating system in the home.Hot Water
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(17)

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
Daniel ButlerA+
Elementary · Grades KG–3 · 0.3 mi
M
Winthrop L Chenery Upper Elementary SchoolA+
Middle · Grades 4–6 · 1.0 mi
H
Belmont High SchoolA+
High · Grades 9–12 · 1.6 mi

District: Belmont School District

Neighborhood · ZIP 02478These 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.55
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.103
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.74

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.28%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.8%
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.27,636
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.5,959 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$162,650
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$213,185
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.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 Whitcomb 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 more than 83% of homes in Middlesex County
  • Costs less per square foot than 79% of homes in Belmont 02478
  • Has a bigger lot than 69% of homes in Belmont 02478
  • Older than 96% of homes in Belmont 02478

What homes are worth in Belmont 02478

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

This home
$594K$3.6M

This home is worth more than 34% of homes in Belmont 02478.

How it measures up in Belmont 02478

The dot is this home. The mark in the middle is the typical home in Belmont 02478.

Estimated value$1,268,876
CheaperTypical $1,464,244Pricier

Pricier than 34% of homes nearby

Price per ft²$614
CheaperTypical $716Pricier

Pricier than 21% of homes nearby

Living area2,067 ft²
SmallerTypical 2,125 ft²Bigger

Bigger than 48% of homes nearby

Lot size0.21 ac
SmallerTypical 0.16 acBigger

Bigger than 69% of homes nearby

Year built1893
OlderTypical 1930Newer

Newer than 4% of homes nearby

How 21 Whitcomb St ranks against every home in each area.
MeasureThis homeBelmont 02478Middlesex County
Estimated valuepricier than$1,268,87634% of homes83% of homes
Price per ft²pricier than$61421% of homes78% of homes
Living areabigger than2,067 ft²48% of homes59% of homes
Lot sizebigger than0.21 ac69% of homes35% of homes
Year builtnewer than18934% of homes7% of homes

About 21 Whitcomb St

How much is 21 Whitcomb St, Belmont, MA worth?

The TopHap Estimate for 21 Whitcomb St, Belmont, MA is $1,268,876 as of Sep 24, 2026. The likely range is $1,183,914 to $1,353,838. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Whitcomb St, Belmont, MA last sell?

21 Whitcomb St, Belmont, MA last sold on Jul 30, 2001 for $527,500, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 21 Whitcomb St, Belmont, MA?

21 Whitcomb St, Belmont, MA has 4 bedrooms, 3 bathrooms, 2,067 square feet of living space and a 0.21-acre lot.

When was 21 Whitcomb St, Belmont, MA built?

21 Whitcomb St, Belmont, MA was built in 1893, making it 133 years old. It is a colonial home. The building has 2 stories.

What schools serve 21 Whitcomb St, Belmont, MA?

21 Whitcomb St, Belmont, MA is assigned to Daniel Butler (elementary), rated A+; Winthrop L Chenery Upper Elementary School (middle), rated A+; Belmont High School (high), rated A+. All sit in Belmont School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Whitcomb St, Belmont, MA compare to other homes in Belmont 02478?

Among the 7,995 homes in Belmont 02478, it is worth more than 34% of them ($1,268,876 against a typical $1,464,244), its price per square foot is higher than 21% of them ($614 against a typical $716), it is bigger than 48% of them (2,067 ft² against a typical 2,125 ft²), its lot is bigger than 69% of them (0.21 ac against a typical 0.16 ac) and it is newer than 4% of them (1893 against a typical 1930). Measured against all of Middlesex County, it is worth more than 83% 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 Whitcomb St, Belmont, MA?

The 2025 property tax bill for 21 Whitcomb St, Belmont, MA was $13,805. The county assessed it at $1,212,000.

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