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Single Family ResidenceResidential
$1,017,190$441 / 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 92How 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 $526,000 on Feb 23, 2015

33 KNOX ST

BELMONT, MA 02478
3
Beds
3.5
Baths
2,309 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.
0.15 ac
Lot SizeThe size of the land the home sits on, from county records.
1957
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

$1M
$934K low$1.1M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$526,000 · Feb 23, 2015

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$12,278 (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.$1,078,000 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$709,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$369,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,021,345

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.7 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.Colonial
CountyMIDDLESEX
Lot (acres)The size of the land the home sits on, from county records.0.15
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
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Basement
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(2)

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
Winn BrookA+
Elementary · Grades KG–3 · 1.0 mi
H
Belmont High SchoolA+
High · Grades 9–12 · 1.2 mi
M
Winthrop L Chenery Upper Elementary SchoolA-
Middle · Grades 4–6 · 1.7 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

33 Knox 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 81% of homes in Belmont 02478
  • Costs less per square foot than 98% of homes in Belmont 02478
  • Bigger than 68% of homes in Middlesex County
  • Has a smaller lot than 75% of homes in Middlesex County
  • Newer than 83% 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
$598K$3.7M

This home is worth more than 19% 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$1,017,190
CheaperTypical $1,464,433Pricier

Pricier than 19% of homes nearby

Price per ft²$441
CheaperTypical $715Pricier

Pricier than 2% of homes nearby

Living area2,309 ft²
SmallerTypical 2,116 ft²Bigger

Bigger than 59% of homes nearby

Lot size0.15 ac
SmallerTypical 0.16 acBigger

Bigger than 44% of homes nearby

Year built1957
OlderTypical 1930Newer

Newer than 83% of homes nearby

How 33 Knox St ranks against every home in each area.
MeasureThis homeBelmont 02478Middlesex County
Estimated valuepricier than$1,017,19019% of homes71% of homes
Price per ft²pricier than$4412% of homes45% of homes
Living areabigger than2,309 ft²59% of homes68% of homes
Lot sizebigger than0.15 ac44% of homes25% of homes
Year builtnewer than195783% of homes49% of homes

About 33 Knox St

How much is 33 Knox St, Belmont, MA worth?

The TopHap Estimate for 33 Knox St, Belmont, MA is $1,017,190 as of Sep 24, 2026. The likely range is $933,817 to $1,100,563. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 33 Knox St, Belmont, MA last sell?

33 Knox St, Belmont, MA last sold on Feb 23, 2015 for $526,000, according to the county's recorded deed.

How big is 33 Knox St, Belmont, MA?

33 Knox St, Belmont, MA has 3 bedrooms, 3.5 bathrooms, 2,309 square feet of living space and a 0.15-acre lot.

When was 33 Knox St, Belmont, MA built?

33 Knox St, Belmont, MA was built in 1957, making it 69 years old. It is a colonial home. The building has 2 stories.

What schools serve 33 Knox St, Belmont, MA?

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

How does 33 Knox St, Belmont, MA compare to other homes in Belmont 02478?

Among the 7,995 homes in Belmont 02478, it is worth more than 19% of them ($1,017,190 against a typical $1,464,433), its price per square foot is higher than 2% of them ($441 against a typical $715), it is bigger than 59% of them (2,309 ft² against a typical 2,116 ft²), its lot is bigger than 44% of them (0.15 ac against a typical 0.16 ac) and it is newer than 83% of them (1957 against a typical 1930). Measured against all of Middlesex County, it is worth more than 71% 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 33 Knox St, Belmont, MA?

The 2025 property tax bill for 33 Knox St, Belmont, MA was $12,278. The county assessed it at $1,078,000.

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