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CondominiumResidential
$905,238$503 / 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 Aug 30, 2026

90 SOUTH ST

BOSTON, MA 02111
Building report
2
Beds
1.5
Baths
1,800 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.
1,800 ft²
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.
1
StoriesHow many floors the home has above ground.
3
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$905K
$859K low$952K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$10,221 (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.$882,600 (2025)
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$882,600
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,112,450

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.40 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.80%
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
CountySUFFOLK
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.2018
Lot (acres)The size of the land the home sits on, from county records.0.04
HeatingThe type of heating system in the home.Hot Water
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

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

M
Quincy Upper SchoolD
Middle · Grades 6–12 · 0.4 mi
E
Josiah Quincy Elementary SchoolB
Elementary · Grades PK–5 · 0.5 mi

District: Boston School District

Neighborhood · ZIP 02111These 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.157
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 100.78

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.86%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.24%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.22%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.10,326
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.27,210 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$82,381
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$110,947
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.46 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

90 South 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 72% of homes in Suffolk County
  • Costs less per square foot than 98% of homes in Leather District
  • Bigger than 89% of homes in Leather District
  • Has a bigger lot than 89% of homes in Leather District
  • Older than 97% of homes in Boston 02111

What homes are worth in Boston 02111

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

This home
$275K$3.7M

This home is worth more than 47% of homes in Boston 02111.

How it measures up in Boston 02111

The dot is this home. The mark in the middle is the typical home in Boston 02111.

Estimated value$905,238
CheaperTypical $948,805Pricier

Pricier than 47% of homes nearby

Price per ft²$503
CheaperTypical $1042Pricier

Pricier than 4% of homes nearby

Living area1,800 ft²
SmallerTypical 1,099 ft²Bigger

Bigger than 87% of homes nearby

Lot size1,800 ft²
SmallerTypical 1,133 ft²Bigger

Bigger than 86% of homes nearby

Year built1890
OlderTypical 1989Newer

Newer than 3% of homes nearby

How 90 South St ranks against every home in each area.
MeasureThis homeLeather DistrictBoston 02111Suffolk County
Estimated valuepricier than$905,23839% of homes47% of homes72% of homes
Price per ft²pricier than$5032% of homes4% of homes34% of homes
Living areabigger than1,800 ft²89% of homes87% of homes61% of homes
Lot sizebigger than1,800 ft²89% of homes86% of homes44% of homes
Year builtnewer than18905% of homes3% of homes13% of homes

About 90 South St

How much is 90 South St, Boston, MA worth?

The TopHap Estimate for 90 South St, Boston, MA is $905,238 as of Aug 30, 2026. The likely range is $858,653 to $951,823. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 90 South St, Boston, MA last sell?

90 South St, Boston, MA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 90 South St, Boston, MA?

90 South St, Boston, MA has 2 bedrooms, 1.5 bathrooms, 1,800 square feet of living space and a 0.04-acre lot.

When was 90 South St, Boston, MA built?

90 South St, Boston, MA was built in 1890, making it 136 years old. The building has 1 story.

What schools serve 90 South St, Boston, MA?

90 South St, Boston, MA is assigned to Quincy Upper School (middle), rated D; Josiah Quincy Elementary School (elementary), rated B. All sit in Boston School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 90 South St, Boston, MA compare to other homes in Boston 02111?

Among the 1,920 homes in Boston 02111, it is worth more than 47% of them ($905,238 against a typical $948,805), its price per square foot is higher than 4% of them ($503 against a typical $1042), it is bigger than 87% of them (1,800 ft² against a typical 1,099 ft²), its lot is bigger than 86% of them (1,800 ft² against a typical 1,133 ft²) and it is newer than 3% of them (1890 against a typical 1989). Measured against all of Suffolk County, it is worth more than 72% 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 90 South St, Boston, MA?

The 2025 property tax bill for 90 South St, Boston, MA was $10,221. The county assessed it at $882,600.

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