Skip to content
Skip to content
TopHapOpen in map
Duplex (2 Units, Any Combination)Residential

21 EMERALD ST

NEWTON, MA 02458
3
Beds
3
Baths
1,945 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.
0.17 ac
Lot SizeThe size of the land the home sits on, from county records.
1953
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
7
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,141 (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.$830,700 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$675,400
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$155,300

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.11 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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.Duplex (2 Units, Any Combination)
StyleThe architectural style of the home, such as ranch or colonial.Ranch
CountyMIDDLESEX
Lot (acres)The size of the land the home sits on, from county records.0.17
ConstructionThe main material the home's frame and walls are built from.Concrete
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Hot Water
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck

Transaction History(3)

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
Lincoln-Eliot Elementary SchoolB+
Elementary · Grades KG–5 · 0.4 mi
H
Newton North High SchoolA+
High · Grades 9–12 · 0.8 mi
M
Bigelow Middle SchoolA
Middle · Grades 6–8 · 1.0 mi

District: Newton School District

Neighborhood · ZIP 02458These 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.97
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.108
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.70

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.31%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.2%
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.14,080
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.6,870 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$143,714
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$186,633
Average tempThe average temperature here across a full year.49°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%

Owner Tools

Do you own this home?
Claim this home

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

21 Emerald 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.

  • Has a smaller lot than 70% of homes in Middlesex County
  • Newer than 80% of homes in Newton 02458

How it measures up in Newton 02458

The dot is this home. The mark in the middle is the typical home in Newton 02458.

Living area1,945 ft²
SmallerTypical 2,252 ft²Bigger

Bigger than 39% of homes nearby

Lot size0.17 ac
SmallerTypical 0.19 acBigger

Bigger than 41% of homes nearby

Year built1953
OlderTypical 1920Newer

Newer than 80% of homes nearby

How 21 Emerald St ranks against every home in each area.
MeasureThis homeNonantumNewton 02458Middlesex County
Living areabigger than1,945 ft²51% of homes39% of homes55% of homes
Lot sizebigger than0.17 ac54% of homes41% of homes30% of homes
Year builtnewer than195372% of homes80% of homes44% of homes

About 21 Emerald St

When did 21 Emerald St, Newton, MA last sell?

21 Emerald St, Newton, MA last sold on Jan 1, 1900, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 21 Emerald St, Newton, MA?

21 Emerald St, Newton, MA has 3 bedrooms, 3 bathrooms, 1,945 square feet of living space and a 0.17-acre lot.

When was 21 Emerald St, Newton, MA built?

21 Emerald St, Newton, MA was built in 1953, making it 73 years old. It is a ranch home. The building has 1 story.

What schools serve 21 Emerald St, Newton, MA?

21 Emerald St, Newton, MA is assigned to Lincoln-Eliot Elementary School (elementary), rated B+; Newton North High School (high), rated A+; Bigelow Middle School (middle), rated A. All sit in Newton School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Emerald St, Newton, MA compare to other homes in Newton 02458?

Among the 3,665 homes in Newton 02458, it is bigger than 39% of them (1,945 ft² against a typical 2,252 ft²), its lot is bigger than 41% of them (0.17 ac against a typical 0.19 ac) and it is newer than 80% of them (1953 against a typical 1920). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 21 Emerald St, Newton, MA?

The 2025 property tax bill for 21 Emerald St, Newton, MA was $8,141. The county assessed it at $830,700.

More homes on Emerald St

Closest homes

More homes in Newton 02458

Assigned schools

Explore the area

See this home in context

Open 21 Emerald St on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map