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Duplex (2 Units, Any Combination)Residential
Last sold for $783,000 on Aug 26, 2026

18 TREMONT ST

BILLERICA, MA 01821
3
Beds
3
Baths
2,176 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.
0.46 ac
Lot SizeThe size of the land the home sits on, from county records.
1983
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
8
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.$783,000 · Aug 26, 2026

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,577 (2026)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$738,800 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$314,300
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$424,500
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$724,700
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$746,653

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.131 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.51%
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.1 percent flood zone

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.Duplex Single
CountyMIDDLESEX
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.2021
Lot (acres)The size of the land the home sits on, from county records.0.46
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
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(15)

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.

M
Locke Middle SchoolB
Middle · Grades 5–7 · 1.6 mi
H
Billerica Memorial High SchoolC+
High · Grades 8–12 · 2.0 mi

District: Billerica School District

Neighborhood · ZIP 01821These 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.40
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.100
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.82

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.98%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.28%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.8%
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.31,495
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,857 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$133,460
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$152,991
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

18 Tremont 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 68% of homes in Billerica 01821
  • Newer than 74% of homes in Middlesex County

How it measures up in Billerica 01821

The dot is this home. The mark in the middle is the typical home in Billerica 01821.

Living area2,176 ft²
SmallerTypical 1,876 ft²Bigger

Bigger than 68% of homes nearby

Lot size0.46 ac
SmallerTypical 0.57 acBigger

Bigger than 45% of homes nearby

Year built1983
OlderTypical 1970Newer

Newer than 73% of homes nearby

How 18 Tremont St ranks against every home in each area.
MeasureThis homeBillerica 01821Middlesex County
Living areabigger than2,176 ft²68% of homes63% of homes
Lot sizebigger than0.46 ac45% of homes60% of homes
Year builtnewer than198373% of homes74% of homes

About 18 Tremont St

When did 18 Tremont St, Billerica, MA last sell?

18 Tremont St, Billerica, MA last sold on Aug 26, 2026 for $783,000, according to the county's recorded deed. TopHap holds 4 recorded sales for this parcel.

How big is 18 Tremont St, Billerica, MA?

18 Tremont St, Billerica, MA has 3 bedrooms, 3 bathrooms, 2,176 square feet of living space and a 0.46-acre lot.

When was 18 Tremont St, Billerica, MA built?

18 Tremont St, Billerica, MA was built in 1983, making it 43 years old. It is a duplex single home. The building has 2 stories.

What schools serve 18 Tremont St, Billerica, MA?

18 Tremont St, Billerica, MA is assigned to Locke Middle School (middle), rated B; Billerica Memorial High School (high), rated C+. All sit in Billerica School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 18 Tremont St, Billerica, MA compare to other homes in Billerica 01821?

Among the 10,006 homes in Billerica 01821, it is bigger than 68% of them (2,176 ft² against a typical 1,876 ft²), its lot is bigger than 45% of them (0.46 ac against a typical 0.57 ac) and it is newer than 73% of them (1983 against a typical 1970). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 18 Tremont St, Billerica, MA?

The 2026 property tax bill for 18 Tremont St, Billerica, MA was $8,577. The county assessed it at $738,800.

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