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CondominiumResidential
$472,147$409 / 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 93How 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 $63,000 on Aug 1, 1997

250 CONGRESS AVE

CHELSEA, MA 02150
Building report
2
Beds
3 / 2
Baths
1,155 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.
1987
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
4
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$472K
$439K low$505K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$63,000 · Aug 1, 1997

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,746 (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.$413,400 (2026)
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$413,400
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$422,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$414,938

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.44
51
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
0
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
52
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
85
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.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.48 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.51%
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.1 percent flood zone

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
CountySUFFOLK
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Baseboard
PoolWhether the property has a pool, and what kind, such as in-ground.No

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.

M
Eugene Wright Science and Technology AcademyD-
Middle · Grades 5–8 · 0.6 mi
E
William a Berkowitz Elementary SchoolC+
Elementary · Grades 1–4 · 1.0 mi
H
Chelsea High SchoolD-
High · Grades 9–12 · 1.0 mi

District: Chelsea School District

Neighborhood · ZIP 02150These 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.89
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.105
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.76

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.17%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.16%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.4%
PopulationHow many people live in this area.40,106
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.16,087 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$72,192
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$94,537
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.45 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

250 Congress Ave 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 85% of homes in Suffolk County
  • Costs less per square foot than 85% of homes in Suffolk County
  • Smaller than 71% of homes in Chelsea 02150
  • Newer than 91% of homes in Chelsea 02150

What homes are worth in Chelsea 02150

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

This home
$279K$830K

This home is worth more than 45% of homes in Chelsea 02150.

How it measures up in Chelsea 02150

The dot is this home. The mark in the middle is the typical home in Chelsea 02150.

Estimated value$472,147
CheaperTypical $491,046Pricier

Pricier than 45% of homes nearby

Price per ft²$409
CheaperTypical $437Pricier

Pricier than 39% of homes nearby

Living area1,155 ft²
SmallerTypical 1,726 ft²Bigger

Bigger than 29% of homes nearby

Year built1987
OlderTypical 1920Newer

Newer than 91% of homes nearby

How 250 Congress Ave ranks against every home in each area.
MeasureThis homeChelsea 02150Suffolk County
Estimated valuepricier than$472,14745% of homes15% of homes
Price per ft²pricier than$40939% of homes15% of homes
Living areabigger than1,155 ft²29% of homes36% of homes
Year builtnewer than198791% of homes83% of homes

About 250 Congress Ave

How much is 250 Congress Ave, Chelsea, MA worth?

The TopHap Estimate for 250 Congress Ave, Chelsea, MA is $472,147 as of Sep 24, 2026. The likely range is $439,092 to $505,202. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 250 Congress Ave, Chelsea, MA last sell?

250 Congress Ave, Chelsea, MA last sold on Aug 1, 1997 for $63,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 250 Congress Ave, Chelsea, MA?

250 Congress Ave, Chelsea, MA has 2 bedrooms, 3 bathrooms and 1,155 square feet of living space.

When was 250 Congress Ave, Chelsea, MA built?

250 Congress Ave, Chelsea, MA was built in 1987, making it 39 years old. The building has 2 stories.

What schools serve 250 Congress Ave, Chelsea, MA?

250 Congress Ave, Chelsea, MA is assigned to Eugene Wright Science and Technology Academy (middle), rated D-; William a Berkowitz Elementary School (elementary), rated C+; Chelsea High School (high), rated D-. All sit in Chelsea School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 250 Congress Ave, Chelsea, MA compare to other homes in Chelsea 02150?

Among the 5,340 homes in Chelsea 02150, it is worth more than 45% of them ($472,147 against a typical $491,046), its price per square foot is higher than 39% of them ($409 against a typical $437), it is bigger than 29% of them (1,155 ft² against a typical 1,726 ft²) and it is newer than 91% of them (1987 against a typical 1920). Measured against all of Suffolk County, it is worth more than 15% 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 250 Congress Ave, Chelsea, MA?

The 2026 property tax bill for 250 Congress Ave, Chelsea, MA was $4,746. The county assessed it at $413,400.

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