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Duplex (2 Units, Any Combination)Residential
Last sold for $1,600,000 on Nov 15, 2021

77R MONUMENT ST

CHARLESTOWN, MA 02129
5
Beds
4.5
Baths
2,496 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.
2,061 ft²
Lot SizeThe size of the land the home sits on, from county records.
1885
Year BuiltThe year the home was originally built, according to county records.
3
StoriesHow many floors the home has above ground.
12
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$1,600,000 · Nov 15, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$19,725 (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.$1,703,400 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$592,700
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$1,110,700

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Duplex (2 Units, Any Combination)
StyleThe architectural style of the home, such as ranch or colonial.Conventional
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.2023
Lot (acres)The size of the land the home sits on, from county records.0.05
RoofThe main material covering the roof, such as asphalt shingle or tile.Slate
HeatingThe type of heating system in the home.Hot Water
CoolingThe type of cooling or air conditioning in the home.Yes
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(6)

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
Harvard / Kent Elementary SchoolC-
Elementary · Grades PK–5 · 0.1 mi
H
Charlestown High SchoolD+
High · Grades 9–12 · 0.2 mi
M
Warren / Prescott K-8 SchoolA-
Middle · Grades PK–8 · 0.2 mi

District: Boston School District

Neighborhood · ZIP 02129These 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.101
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.35%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.3%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.3%
PopulationHow many people live in this area.18,397
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.10,594 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$152,177
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$178,903
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

77r Monument 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.

  • Bigger than 90% of homes in Charlestown 02129
  • Has a bigger lot than 89% of homes in Charlestown 02129
  • Older than 93% of homes in Suffolk County

How it measures up in Charlestown 02129

The dot is this home. The mark in the middle is the typical home in Charlestown 02129.

Living area2,496 ft²
SmallerTypical 1,196 ft²Bigger

Bigger than 90% of homes nearby

Lot size2,061 ft²
SmallerTypical 1,133 ft²Bigger

Bigger than 89% of homes nearby

Year built1885
OlderTypical 1899Newer

Newer than 41% of homes nearby

How 77r Monument St ranks against every home in each area.
MeasureThis homeCharlestown 02129Suffolk County
Living areabigger than2,496 ft²90% of homes77% of homes
Lot sizebigger than2,061 ft²89% of homes46% of homes
Year builtnewer than188541% of homes7% of homes

About 77r Monument St

When did 77r Monument St, Charlestown, MA last sell?

77r Monument St, Charlestown, MA last sold on Nov 15, 2021 for $1,600,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 77r Monument St, Charlestown, MA?

77r Monument St, Charlestown, MA has 5 bedrooms, 4.5 bathrooms, 2,496 square feet of living space and a 0.05-acre lot.

When was 77r Monument St, Charlestown, MA built?

77r Monument St, Charlestown, MA was built in 1885, making it 141 years old. It is a conventional home. The building has 3 stories.

What schools serve 77r Monument St, Charlestown, MA?

77r Monument St, Charlestown, MA is assigned to Harvard / Kent Elementary School (elementary), rated C-; Charlestown High School (high), rated D+; Warren / Prescott K-8 School (middle), rated A-. All sit in Boston School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 77r Monument St, Charlestown, MA compare to other homes in Charlestown 02129?

Among the 5,260 homes in Charlestown 02129, it is bigger than 90% of them (2,496 ft² against a typical 1,196 ft²), its lot is bigger than 89% of them (2,061 ft² against a typical 1,133 ft²) and it is newer than 41% of them (1885 against a typical 1899). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 77r Monument St, Charlestown, MA?

The 2025 property tax bill for 77r Monument St, Charlestown, MA was $19,725. The county assessed it at $1,703,400.

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