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Single Family ResidenceResidential
$1,006,416$599 / 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 91How 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
Last sold for $680,000 on Jul 31, 2018

20 EMERALD ST

NEWTON, MA 02458
3
Beds
2
Baths
1,680 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.
4,059 ft²
Lot SizeThe size of the land the home sits on, from county records.
1928
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
6
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$1M
$914K low$1.1M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$680,000 · Jul 31, 2018

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,830 (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.$799,000 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$683,800
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$115,200
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$799,000

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.8 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.Single Family Residence
CountyMiddlesex
Lot (acres)The size of the land the home sits on, from county records.0.09
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
CoolingThe type of cooling or air conditioning in the home.Yes

Transaction History(7)

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%

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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

20 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.

  • Worth more than 70% of homes in Middlesex County
  • Costs more per square foot than 76% of homes in Middlesex County
  • Smaller than 71% of homes in Newton 02458
  • Has a smaller lot than 91% of homes in Nonantum
  • Older than 70% of homes in Middlesex County

What homes are worth in Newton 02458

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

This home
$456K$4.3M

This home is worth more than 31% 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.

Estimated value$1,006,416
CheaperTypical $1,319,617Pricier

Pricier than 31% of homes nearby

Price per ft²$599
CheaperTypical $666Pricier

Pricier than 29% of homes nearby

Living area1,680 ft²
SmallerTypical 2,243 ft²Bigger

Bigger than 29% of homes nearby

Lot size4,059 ft²
SmallerTypical 0.19 acBigger

Bigger than 9% of homes nearby

Year built1928
OlderTypical 1920Newer

Newer than 60% of homes nearby

How 20 Emerald St ranks against every home in each area.
MeasureThis homeNonantumNewton 02458Middlesex County
Estimated valuepricier than$1,006,41638% of homes31% of homes70% of homes
Price per ft²pricier than$59929% of homes29% of homes76% of homes
Living areabigger than1,680 ft²39% of homes29% of homes43% of homes
Lot sizebigger than4,059 ft²9% of homes9% of homes10% of homes
Year builtnewer than192855% of homes60% of homes30% of homes

About 20 Emerald St

How much is 20 Emerald St, Newton, MA worth?

The TopHap Estimate for 20 Emerald St, Newton, MA is $1,006,416 as of Aug 30, 2026. The likely range is $914,491 to $1,098,341. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 20 Emerald St, Newton, MA last sell?

20 Emerald St, Newton, MA last sold on Jul 31, 2018 for $680,000, according to the county's recorded deed.

How big is 20 Emerald St, Newton, MA?

20 Emerald St, Newton, MA has 3 bedrooms, 2 bathrooms, 1,680 square feet of living space and a 0.09-acre lot.

When was 20 Emerald St, Newton, MA built?

20 Emerald St, Newton, MA was built in 1928, making it 98 years old. The building has 2 stories.

What schools serve 20 Emerald St, Newton, MA?

20 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 20 Emerald St, Newton, MA compare to other homes in Newton 02458?

Among the 3,665 homes in Newton 02458, it is worth more than 31% of them ($1,006,416 against a typical $1,319,617), its price per square foot is higher than 29% of them ($599 against a typical $666), it is bigger than 29% of them (1,680 ft² against a typical 2,243 ft²), its lot is bigger than 9% of them (4,059 ft² against a typical 0.19 ac) and it is newer than 60% of them (1928 against a typical 1920). Measured against all of Middlesex County, it is worth more than 70% 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 20 Emerald St, Newton, MA?

The 2025 property tax bill for 20 Emerald St, Newton, MA was $7,830. The county assessed it at $799,000.

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