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CondominiumResidential
$1,058,251$725 / 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 $700,000 on Aug 3, 2020

18 WARREN ST

WATERTOWN, MA 02472
3
Beds
3.5
Baths
1,460 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.
0.14 ac
Lot SizeThe size of the land the home sits on, from county records.
2021
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

$1.1M
$973K 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.$700,000 · Aug 3, 2020

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$11,787 (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.$1,009,200 (2025)
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$1,009,200
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$818,615

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.36
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
1
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.
87
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(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.

M
Watertown Middle SchoolB-
Middle · Grades 6–8 · 0.1 mi
E
J. R. Lowell Elementary SchoolA-
Elementary · Grades KG–5 · 0.4 mi
H
Watertown High SchoolB-
High · Grades 9–12 · 0.7 mi

District: Watertown School District

Neighborhood · ZIP 02472These 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.112
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 100.71

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.34%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.6%
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.35,928
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.8,689 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$115,227
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$149,103
Average tempThe average temperature here across a full year.50°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

18 Warren 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 81% of homes in Watertown West End
  • Costs more per square foot than 88% of homes in Watertown West End
  • Smaller than 67% of homes in Middlesex County
  • Has a smaller lot than 77% of homes in Middlesex County
  • Among the newest homes in Watertown West End

What homes are worth in Watertown 02472

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

This home
$374K$1.8M

This home is worth more than 79% of homes in Watertown 02472.

How it measures up in Watertown 02472

The dot is this home. The mark in the middle is the typical home in Watertown 02472.

Estimated value$1,058,251
CheaperTypical $831,221Pricier

Pricier than 79% of homes nearby

Price per ft²$725
CheaperTypical $592Pricier

Pricier than 88% of homes nearby

Living area1,460 ft²
SmallerTypical 1,727 ft²Bigger

Bigger than 40% of homes nearby

Lot size0.14 ac
SmallerTypical 0.14 acBigger

Bigger than 53% of homes nearby

Year built2021
OlderTypical 1930Newer

Newer than almost all homes nearby

How 18 Warren St ranks against every home in each area.
MeasureThis homeWatertown West EndWatertown 02472Middlesex County
Estimated valuepricier than$1,058,25181% of homes79% of homes74% of homes
Price per ft²pricier than$72588% of homes88% of homes88% of homes
Living areabigger than1,460 ft²43% of homes40% of homes33% of homes
Lot sizebigger than0.14 ac55% of homes53% of homes23% of homes
Year builtnewer than2021almost all homesalmost all homesalmost all homes

About 18 Warren St

How much is 18 Warren St, Watertown, MA worth?

The TopHap Estimate for 18 Warren St, Watertown, MA is $1,058,251 as of Sep 24, 2026. The likely range is $973,293 to $1,143,209. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 18 Warren St, Watertown, MA last sell?

18 Warren St, Watertown, MA last sold on Aug 3, 2020 for $700,000, according to the county's recorded deed.

How big is 18 Warren St, Watertown, MA?

18 Warren St, Watertown, MA has 3 bedrooms, 3.5 bathrooms and 1,460 square feet of living space.

When was 18 Warren St, Watertown, MA built?

18 Warren St, Watertown, MA was built in 2021, making it 5 years old. The building has 2 stories.

What schools serve 18 Warren St, Watertown, MA?

18 Warren St, Watertown, MA is assigned to Watertown Middle School (middle), rated B-; J. R. Lowell Elementary School (elementary), rated A-; Watertown High School (high), rated B-. All sit in Watertown School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 18 Warren St, Watertown, MA compare to other homes in Watertown 02472?

Among the 10,041 homes in Watertown 02472, it is worth more than 79% of them ($1,058,251 against a typical $831,221), its price per square foot is higher than 88% of them ($725 against a typical $592), it is bigger than 40% of them (1,460 ft² against a typical 1,727 ft²), its lot is bigger than 53% of them (0.14 ac against a typical 0.14 ac) and it is newer than almost all of them (2021 against a typical 1930). Measured against all of Middlesex County, it is worth more than 74% 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 18 Warren St, Watertown, MA?

The 2025 property tax bill for 18 Warren St, Watertown, MA was $11,787. The county assessed it at $1,009,200.

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