Skip to content
Skip to content
TopHapOpen in map
CondominiumResidential
$629,845$428 / 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 91How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026
Last sold for $485,000 on Dec 2, 2021

40 WILLIAMS ST

WALTHAM, MA 02453
Building report
4
Beds
2
Baths
1,470 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.
3,946 ft²
Lot SizeThe size of the land the home sits on, from county records.
2016
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
6
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$630K
$574K low$686K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$485,000 · Dec 2, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,401 (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.$523,400 (2026)
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$523,400
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$505,700
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$586,266

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.37
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
4
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
59
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
89
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
32
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.Condominium
CountyMIDDLESEX
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
CoolingThe type of cooling or air conditioning in the home.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(1)

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.

M
John W. McDevitt Middle SchoolC
Middle · Grades 6–8 · 0.6 mi
E
William F. Stanley Elementary SchoolC
Elementary · Grades KG–5 · 0.6 mi
H
Waltham Sr High SchoolD+
High · Grades 9–12 · 1.6 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

40 Williams 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 80% of homes in Waltham 02453
  • Costs less per square foot than 75% of homes in Bank Square
  • Smaller than 69% of homes in Waltham 02453
  • Has a smaller lot than 93% of homes in Waltham 02453
  • Newer than 98% of homes in Bank Square

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
$342K$1.3M

This home is worth more than 20% 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$629,845
CheaperTypical $788,068Pricier

Pricier than 20% of homes nearby

Price per ft²$428
CheaperTypical $493Pricier

Pricier than 27% of homes nearby

Living area1,470 ft²
SmallerTypical 1,872 ft²Bigger

Bigger than 31% of homes nearby

Lot size3,946 ft²
SmallerTypical 0.15 acBigger

Bigger than 7% of homes nearby

Year built2016
OlderTypical 1930Newer

Newer than 97% of homes nearby

How 40 Williams St ranks against every home in each area.
MeasureThis homeBank SquareWaltham 02453Middlesex County
Estimated valuepricier than$629,84535% of homes20% of homes30% of homes
Price per ft²pricier than$42825% of homes27% of homes42% of homes
Living areabigger than1,470 ft²33% of homes31% of homes34% of homes
Lot sizebigger than3,946 ft²11% of homes7% of homes9% of homes
Year builtnewer than201698% of homes97% of homes97% of homes

About 40 Williams St

How much is 40 Williams St, Waltham, MA worth?

The TopHap Estimate for 40 Williams St, Waltham, MA is $629,845 as of Oct 21, 2026. The likely range is $574,157 to $685,533. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 40 Williams St, Waltham, MA last sell?

40 Williams St, Waltham, MA last sold on Dec 2, 2021 for $485,000, according to the county's recorded deed.

How big is 40 Williams St, Waltham, MA?

40 Williams St, Waltham, MA has 4 bedrooms, 2 bathrooms and 1,470 square feet of living space.

When was 40 Williams St, Waltham, MA built?

40 Williams St, Waltham, MA was built in 2016, making it 10 years old. The building has 2 stories.

What schools serve 40 Williams St, Waltham, MA?

40 Williams St, Waltham, MA is assigned to John W. McDevitt Middle School (middle), rated C; William F. Stanley Elementary School (elementary), 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 40 Williams St, Waltham, MA compare to other homes in Waltham 02453?

Among the 6,296 homes in Waltham 02453, it is worth more than 20% of them ($629,845 against a typical $788,068), its price per square foot is higher than 27% of them ($428 against a typical $493), it is bigger than 31% of them (1,470 ft² against a typical 1,872 ft²), its lot is bigger than 7% of them (3,946 ft² against a typical 0.15 ac) and it is newer than 97% of them (2016 against a typical 1930). Measured against all of Middlesex County, it is worth more than 30% 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 40 Williams St, Waltham, MA?

The 2026 property tax bill for 40 Williams St, Waltham, MA was $5,401. The county assessed it at $523,400.

More homes on Williams St

Closest homes

More homes in Waltham 02453

Assigned schools

Explore the area

See this home in context

Open 40 Williams 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