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Single Family ResidenceResidential
$2,096,066$747 / 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 $1,018,500 on Jun 28, 2007

23 OAK ST

BELMONT, MA 02478
5
Beds
3.5
Baths
2,805 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.
0.18 ac
Lot SizeThe size of the land the home sits on, from county records.
1905
Year BuiltThe year the home was originally built, according to county records.
2
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.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$2.1M
$2M low$2.2M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$1,018,500 · Jun 28, 2007

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$23,213 (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.$2,038,000 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$976,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$1,062,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,823,620

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.0.18
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
HeatingThe type of heating system in the home.Steam
FireplaceWhether the home has a fireplace, and what kind.Yes
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(4)

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
Roger E WellingtonA
Elementary · Grades PK–3 · 0.2 mi
H
Belmont High SchoolA+
High · Grades 9–12 · 0.3 mi
M
Winthrop L Chenery Upper Elementary SchoolA-
Middle · Grades 4–6 · 0.5 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

23 Oak 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 95% of homes in Middlesex County
  • Costs more per square foot than 89% of homes in Middlesex County
  • Bigger than 81% of homes in Middlesex County
  • Has a smaller lot than 68% of homes in Middlesex County
  • Older than 93% 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
$588K$3.5M

This home is worth more than 85% 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$2,096,066
CheaperTypical $1,466,155Pricier

Pricier than 85% of homes nearby

Price per ft²$747
CheaperTypical $715Pricier

Pricier than 60% of homes nearby

Living area2,805 ft²
SmallerTypical 2,120 ft²Bigger

Bigger than 80% of homes nearby

Lot size0.18 ac
SmallerTypical 0.16 acBigger

Bigger than 62% of homes nearby

Year built1905
OlderTypical 1930Newer

Newer than 7% of homes nearby

How 23 Oak St ranks against every home in each area.
MeasureThis homeBelmont 02478Middlesex County
Estimated valuepricier than$2,096,06685% of homes95% of homes
Price per ft²pricier than$74760% of homes89% of homes
Living areabigger than2,805 ft²80% of homes81% of homes
Lot sizebigger than0.18 ac62% of homes32% of homes
Year builtnewer than19057% of homes16% of homes

About 23 Oak St

How much is 23 Oak St, Belmont, MA worth?

The TopHap Estimate for 23 Oak St, Belmont, MA is $2,096,066 as of Sep 24, 2026. The likely range is $1,995,586 to $2,196,546. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 23 Oak St, Belmont, MA last sell?

23 Oak St, Belmont, MA last sold on Jun 28, 2007 for $1,018,500, according to the county's recorded deed.

How big is 23 Oak St, Belmont, MA?

23 Oak St, Belmont, MA has 5 bedrooms, 3.5 bathrooms, 2,805 square feet of living space and a 0.18-acre lot.

When was 23 Oak St, Belmont, MA built?

23 Oak St, Belmont, MA was built in 1905, making it 121 years old. It is a colonial home. The building has 2 stories.

What schools serve 23 Oak St, Belmont, MA?

23 Oak St, Belmont, MA is assigned to Roger E Wellington (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 23 Oak St, Belmont, MA compare to other homes in Belmont 02478?

Among the 7,995 homes in Belmont 02478, it is worth more than 85% of them ($2,096,066 against a typical $1,466,155), its price per square foot is higher than 60% of them ($747 against a typical $715), it is bigger than 80% of them (2,805 ft² against a typical 2,120 ft²), its lot is bigger than 62% of them (0.18 ac against a typical 0.16 ac) and it is newer than 7% of them (1905 against a typical 1930). Measured against all of Middlesex County, it is worth more than 95% 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 23 Oak St, Belmont, MA?

The 2025 property tax bill for 23 Oak St, Belmont, MA was $23,213. The county assessed it at $2,038,000.

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