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CondominiumResidential
Last sold for $204,100 on Mar 23, 2021

81 SALEM RD

BILLERICA, MA 01821
5.26 ac
Lot SizeThe size of the land the home sits on, from county records.
2003
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
1
ParkingThe number of parking spaces on the property, including the garage.
Built 200343 units1,025–1,388 ft²
$20M
All units combinedThe sum of our current value estimates for every unit in the building — roughly what the whole building's homes are worth together.
$512K
Median unit valueThe middle unit value in this building by our estimate: half the units are worth more, half less.
$489
Median $/ft²The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.

+51.8%vs the Billerica ZIP median sale $/ft² ($322)

Sales Performance

$530K
Median sale (12 mo)The middle sale price among this building's units that sold in the last 12 months, from recorded deeds.
+1.9%
1-yr changeHow the building's median sale price over the last 12 months compares with the 12 months before that.
3
Sales (12 mo)Units in this building that sold in the last 12 months, from recorded arms-length deeds.
7.0%
Turnover (12 mo)The share of units that changed hands in the last 12 months. Around 4–6% a year is typical; much higher can signal investor churn or a wave of exits.
This building's own appreciationThe building's own appreciation: for every unit that sold twice (held over a year), we compute its yearly price change between the two sales and take the middle value. This is the cleanest read on how this specific building performs, because it compares each unit to itself.
+3.7%per yeartypical hold 5.3 yrsfrom 49 same-unit resales
Median sale price (yearly, all time)Every recorded arms-length sale in the building since records begin, grouped by year: the bars count sales and the line tracks the median price paid.MedianSales
20032006200920122015201820212026
Sale price per ft² (yearly, all time)The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.$/ft²
20032006200920122015201820212026

93 arms-length sales on record for this building.

Unit Mix & Floor PlansThe building's recurring floor plans, found by grouping units with identical beds, baths and square footage in county records. Larger groups are the building's standard layouts; leftover units have one-off sizes.

Every unit: size vs estimated valueEvery unit in the building as one dot: across is its size, up is our current value estimate, and color is its bedroom count. Vertical columns of dots are recurring floor plans; the height spread within a column shows how much floor, view and condition move prices for the same layout.
$349K$420K$491K$561K1,025 ft²1,098 ft²1,170 ft²1,243 ft²1,315 ft²1,388 ft²
Studio
Studio
43 units
Recurring floor plansThe building's recurring floor plans, found by grouping units with identical beds, baths and square footage in county records. Larger groups are the building's standard layouts; leftover units have one-off sizes.
Studio · 1.5 ba · 1,028 ft²
8 units
Studio · 1.5 ba · 1,027 ft²
5 units
Studio · 1.5 ba · 1,029 ft²
5 units
Studio · 1.5 ba · 1,032 ft²
4 units
Studio · 1.5 ba · 1,026 ft²
3 units
Studio · 1.5 ba · 1,030 ft²
2 units
Studio · 1.5 ba · 1,031 ft²
2 units
Studio · 1.5 ba · 1,091 ft²
2 units
Studio · 1.5 ba · 1,095 ft²
2 units
One-off layouts
10 units

Value DistributionHow the building's units spread across value ranges by our current estimates. A wide spread usually means big differences in size, floor or view.

$349K–$360K
10 units
$496K–$502K
5 units
$508K–$534K
22 units
$538K–$561K
5 units

Ownership & Financing

Owner-occupiedThe share of units where the owner lives in the unit, per county records. The rest are second homes or rentals.91%
Company-ownedUnits owned through an LLC, trust, or other company — a rough proxy for investor ownership.12%
Typical owner tenureThe middle number of years since each unit last changed hands — how long the current owners have been in place.16.7 yrs
Cash purchases (5 yrs)The share of purchases in the last 5 years with no mortgage recorded. High cash share is common in second-home and investor buildings.11%
Avg. loan-to-valueAverage current loan balance against unit value across the building. Low numbers mean owners hold lots of equity — a sign of financial stability.47%
Median owner equityThe middle dollar amount of equity (value minus loans) unit owners hold in this building.$491,017
Median tax billThe middle annual property tax bill among the building's units.$4,979
Pre-foreclosure noticesUnits with an active pre-foreclosure or foreclosure notice on file.0

Recent SalesThe latest recorded arms-length sales in the building, newest first.

Unit 74May 20, 2026$530,000Unit 31May 8, 2026$530,000Unit 102Mar 27, 2026$351,096Unit 21Jun 27, 2025$520,000Unit 73Sep 30, 2022$287,900Unit 103Dec 30, 2021$410,000Unit 112Dec 30, 2021$425,000Unit 92Dec 15, 2021$420,000Unit 91Nov 5, 2021$435,000BuildingMar 23, 2021$204,100

Values are TopHap estimates, not appraisals. Sales, ownership and tax figures come from recorded county documents via ATTOM and can lag by several weeks.

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,480 (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.$306,100 (2025)
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$306,100
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$330,410

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.3 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.Condominium
CountyMIDDLESEX
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
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Basement
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(4)

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
Marshall Middle SchoolB-
Middle · Grades 5–7 · 0.3 mi
H
Billerica Memorial High SchoolC
High · Grades 8–12 · 0.8 mi
E
Hajjar Elementary SchoolB-
Elementary · Grades KG–4 · 1.2 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%

All UnitsEvery property record the county has at this street address, such as the units in a condo building. Prices shown are our estimates, not asking prices.

81 Salem Rd
1.5 ba · 1,025 ft²
$355K
81 Salem Rd # 11
1.5 ba · 1,025 ft²
$508K
81 Salem Rd # 12
1.5 ba · 1,027 ft²
$496K
81 Salem Rd # 13
1.5 ba · 1,028 ft²
$357K
81 Salem Rd # 14
1.5 ba · 1,388 ft²
$561K
81 Salem Rd # 21
1.5 ba · 1,026 ft²
$538K
81 Salem Rd # 22
1.5 ba · 1,029 ft²
$513K
81 Salem Rd # 23
1.5 ba · 1,033 ft²
$512K
81 Salem Rd # 24
1.5 ba · 1,028 ft²
$358K
81 Salem Rd # 31
1.5 ba · 1,091 ft²
$534K
81 Salem Rd # 32
1.5 ba · 1,032 ft²
$360K
81 Salem Rd # 33
1.5 ba · 1,096 ft²
$515K
81 Salem Rd # 34
1.5 ba · 1,072 ft²
$526K
81 Salem Rd # 41
1.5 ba · 1,092 ft²
$518K
81 Salem Rd # 42
1.5 ba · 1,029 ft²
$357K
81 Salem Rd # 43
1.5 ba · 1,095 ft²
$528K
81 Salem Rd # 44
1.5 ba · 1,091 ft²
$551K
81 Salem Rd # 51
1.5 ba · 1,027 ft²
$511K
81 Salem Rd # 52
1.5 ba · 1,074 ft²
$543K
81 Salem Rd # 53
1.5 ba · 1,032 ft²
$359K
81 Salem Rd # 54
1.5 ba · 1,095 ft²
$522K
81 Salem Rd # 61
1.5 ba · 1,026 ft²
$509K
81 Salem Rd # 62
1.5 ba · 1,027 ft²
81 Salem Rd # 63
1.5 ba · 1,030 ft²
$513K
81 Salem Rd # 64
1.5 ba · 1,029 ft²
$349K
81 Salem Rd # 71
1.5 ba · 1,032 ft²
$497K
81 Salem Rd # 72
1.5 ba · 1,030 ft²
$509K
81 Salem Rd # 73
1.5 ba · 1,029 ft²
$357K
81 Salem Rd # 74
1.5 ba · 1,028 ft²
$534K
81 Salem Rd # 82
1.5 ba · 1,028 ft²
$509K
81 Salem Rd # 83
1.5 ba · 1,028 ft²
$514K
81 Salem Rd # 84
1.5 ba · 1,028 ft²
$502K
81 Salem Rd # 91
1.5 ba · 1,026 ft²
$549K
81 Salem Rd # 92
1.5 ba · 1,073 ft²
$525K
81 Salem Rd # 93
1.5 ba · 1,031 ft²
$359K
81 Salem Rd # 94
1.5 ba · 1,027 ft²
$500K
81 Salem Rd # 101
1.5 ba · 1,028 ft²
$523K
81 Salem Rd # 102
1.5 ba · 1,031 ft²
$355K
81 Salem Rd # 103
1.5 ba · 1,032 ft²
$520K
81 Salem Rd # 104
1.5 ba · 1,028 ft²
$524K
81 Salem Rd # 111
1.5 ba · 1,106 ft²
$513K
81 Salem Rd # 112
1.5 ba · 1,027 ft²
$531K
81 Salem Rd # 113
1.5 ba · 1,029 ft²
$501K
81 Salem Rd # 114
1.5 ba · 1,100 ft²
$355K

Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

About 81 Salem Rd

How many units are in 81 Salem Rd, Billerica, MA?

81 Salem Rd, Billerica, MA has 43 residential units across built in 2003, according to county assessor records.

What is a unit at 81 Salem Rd, Billerica, MA worth?

The median TopHap Estimate across the 43 units at 81 Salem Rd, Billerica, MA is $512,154. That works out to $489 per square foot. Units run from 1,025 to 1,388 square feet. Estimates are modelled from recorded sales and assessments, not appraisals.

Is 81 Salem Rd, Billerica, MA expensive for Billerica?

Units at 81 Salem Rd, Billerica, MA carry a median of $489 per square foot, 52% above the Billerica median of $322 per square foot.

How often do units sell at 81 Salem Rd, Billerica, MA?

3 units at 81 Salem Rd, Billerica, MA sold in the last 12 months, out of 93 recorded arms-length sales all time. That is a turnover rate of 7.0% of the building per year. The median sale over that period was $530K.

Have units at 81 Salem Rd, Billerica, MA appreciated?

Across 49 repeat sales of the same unit, 81 Salem Rd, Billerica, MA returned a median 3.7% per year. Because each pair is the same unit bought and sold, the figure is not distorted by which units traded. The median owner held for 5.3 years.

What floor plans does 81 Salem Rd, Billerica, MA have?

The most common plan at 81 Salem Rd, Billerica, MA is a 0-bedroom of 1,028 square feet, repeated 8 times, with a median estimate of $511,306. TopHap identifies 9 recurring plans in the building.

More homes on Salem Rd

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More homes in Billerica 01821

Assigned schools

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