Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$911,387$315 / 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 90How 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 $165,000 on Apr 30, 1990

21 DARTMOUTH ST

WALTHAM, MA 02453
3
Beds
2
Baths
2,889 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.
0.17 ac
Lot SizeThe size of the land the home sits on, from county records.
1890
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.

Valuation

$911K
$816K low$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.$165,000 · Apr 30, 1990

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,115 (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.$786,300 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$397,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$388,800
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$795,400
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$866,998

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.0.17
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.Steam
PoolWhether the property has a pool, and what kind, such as in-ground.No

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
William F. Stanley Elementary SchoolC
Elementary · Grades KG–5 · 0.3 mi
M
John W. McDevitt Middle SchoolC
Middle · Grades 6–8 · 1.0 mi
H
Waltham Sr High SchoolD+
High · Grades 9–12 · 1.9 mi

District: Waltham School District

Neighborhood · ZIP 02453These 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.106
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.104
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.73

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.94%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.31%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.8%
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.32,080
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.8,464 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$106,981
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$136,606
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%

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 Dartmouth 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 89% of homes in Bank Square
  • Costs less per square foot than 96% of homes in Waltham 02453
  • Bigger than 83% of homes in Middlesex County
  • Has a smaller lot than 70% of homes in Middlesex County
  • Older than 93% of homes in Middlesex County

What homes are worth in Waltham 02453

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

This home
$340K$1.3M

This home is worth more than 77% of homes in Waltham 02453.

How it measures up in Waltham 02453

The dot is this home. The mark in the middle is the typical home in Waltham 02453.

Estimated value$911,387
CheaperTypical $786,677Pricier

Pricier than 77% of homes nearby

Price per ft²$315
CheaperTypical $492Pricier

Pricier than 4% of homes nearby

Living area2,889 ft²
SmallerTypical 1,876 ft²Bigger

Bigger than 81% of homes nearby

Lot size0.17 ac
SmallerTypical 0.15 acBigger

Bigger than 63% of homes nearby

Year built1890
OlderTypical 1930Newer

Newer than 10% of homes nearby

How 21 Dartmouth St ranks against every home in each area.
MeasureThis homeBank SquareWaltham 02453Middlesex County
Estimated valuepricier than$911,38789% of homes77% of homes64% of homes
Price per ft²pricier than$3155% of homes4% of homes12% of homes
Living areabigger than2,889 ft²77% of homes81% of homes83% of homes
Lot sizebigger than0.17 ac65% of homes63% of homes30% of homes
Year builtnewer than189015% of homes10% of homes7% of homes

About 21 Dartmouth St

How much is 21 Dartmouth St, Waltham, MA worth?

The TopHap Estimate for 21 Dartmouth St, Waltham, MA is $911,387 as of Sep 24, 2026. The likely range is $815,971 to $1,006,803. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Dartmouth St, Waltham, MA last sell?

21 Dartmouth St, Waltham, MA last sold on Apr 30, 1990 for $165,000, according to the county's recorded deed.

How big is 21 Dartmouth St, Waltham, MA?

21 Dartmouth St, Waltham, MA has 3 bedrooms, 2 bathrooms, 2,889 square feet of living space and a 0.17-acre lot.

When was 21 Dartmouth St, Waltham, MA built?

21 Dartmouth St, Waltham, MA was built in 1890, making it 136 years old. It is a colonial home. The building has 2 stories.

What schools serve 21 Dartmouth St, Waltham, MA?

21 Dartmouth St, Waltham, MA is assigned to William F. Stanley Elementary School (elementary), rated C; John W. McDevitt Middle School (middle), rated C; Waltham Sr High School (high), rated D+. All sit in Waltham School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Dartmouth St, Waltham, MA compare to other homes in Waltham 02453?

Among the 6,296 homes in Waltham 02453, it is worth more than 77% of them ($911,387 against a typical $786,677), its price per square foot is higher than 4% of them ($315 against a typical $492), it is bigger than 81% of them (2,889 ft² against a typical 1,876 ft²), its lot is bigger than 63% of them (0.17 ac against a typical 0.15 ac) and it is newer than 10% of them (1890 against a typical 1930). Measured against all of Middlesex County, it is worth more than 64% 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 Dartmouth St, Waltham, MA?

The 2026 property tax bill for 21 Dartmouth St, Waltham, MA was $8,115. The county assessed it at $786,300.

More homes on Dartmouth St

Closest homes

More homes in Waltham 02453

Assigned schools

Explore the area

See this home in context

Open 21 Dartmouth St 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