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CondominiumResidential
$677,480$936 / 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 96How 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 $675,000 on Jun 22, 2017

91 WALTHAM ST

BOSTON, MA 02118
Building report
1
Beds
1
Baths
724 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.
724 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

$677K
$650K low$705K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$675,000 · Jun 22, 2017

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,352 (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.$548,500 (2025)
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$548,500
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,015,075

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.96 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.1975
Lot (acres)The size of the land the home sits on, from county records.0.02
HeatingThe type of heating system in the home.Hot Water
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(8)

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 Mckinley SchoolF
Elementary · Grades KG–12 · 0.1 mi

District: Boston School District

Neighborhood · ZIP 02118These 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.140
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.101
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.80

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.92%
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.22%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.29,733
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.26,785 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$97,217
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$146,291
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

91 Waltham 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 87% of homes in South End
  • Costs less per square foot than 84% of homes in South End
  • Smaller than 88% of homes in Suffolk County
  • Has a smaller lot than 88% of homes in Suffolk County
  • Older than 87% of homes in Suffolk County

What homes are worth in Boston 02118

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

This home
$444K$4.6M

This home is worth more than 16% of homes in Boston 02118.

How it measures up in Boston 02118

The dot is this home. The mark in the middle is the typical home in Boston 02118.

Estimated value$677,480
CheaperTypical $997,896Pricier

Pricier than 16% of homes nearby

Price per ft²$936
CheaperTypical $1102Pricier

Pricier than 24% of homes nearby

Living area724 ft²
SmallerTypical 1,021 ft²Bigger

Bigger than 21% of homes nearby

Lot size724 ft²
SmallerTypical 1,045 ft²Bigger

Bigger than 20% of homes nearby

Year built1890
OlderTypical 1900Newer

Newer than 21% of homes nearby

How 91 Waltham St ranks against every home in each area.
MeasureThis homeSouth EndBoston 02118Suffolk County
Estimated valuepricier than$677,48013% of homes16% of homes45% of homes
Price per ft²pricier than$93616% of homes24% of homes75% of homes
Living areabigger than724 ft²23% of homes21% of homes12% of homes
Lot sizebigger than724 ft²22% of homes20% of homes12% of homes
Year builtnewer than189029% of homes21% of homes13% of homes

About 91 Waltham St

How much is 91 Waltham St, Boston, MA worth?

The TopHap Estimate for 91 Waltham St, Boston, MA is $677,480 as of Sep 24, 2026. The likely range is $649,985 to $704,975. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 91 Waltham St, Boston, MA last sell?

91 Waltham St, Boston, MA last sold on Jun 22, 2017 for $675,000, according to the county's recorded deed. TopHap holds 5 recorded sales for this parcel.

How big is 91 Waltham St, Boston, MA?

91 Waltham St, Boston, MA has 1 bedrooms, 1 bathrooms, 724 square feet of living space and a 0.02-acre lot.

When was 91 Waltham St, Boston, MA built?

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

What schools serve 91 Waltham St, Boston, MA?

91 Waltham St, Boston, MA is assigned to William Mckinley School (elementary), rated F. All sit in Boston School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 91 Waltham St, Boston, MA compare to other homes in Boston 02118?

Among the 6,232 homes in Boston 02118, it is worth more than 16% of them ($677,480 against a typical $997,896), its price per square foot is higher than 24% of them ($936 against a typical $1102), it is bigger than 21% of them (724 ft² against a typical 1,021 ft²), its lot is bigger than 20% of them (724 ft² against a typical 1,045 ft²) and it is newer than 21% of them (1890 against a typical 1900). Measured against all of Suffolk County, it is worth more than 45% 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 91 Waltham St, Boston, MA?

The 2025 property tax bill for 91 Waltham St, Boston, MA was $6,352. The county assessed it at $548,500.

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