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CondominiumResidential
Last sold for $317,000 on Sep 22, 2022

7 KAREN CIR

BILLERICA, MA 01821
3.55 ac
Lot SizeThe size of the land the home sits on, from county records.
1979
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
Built 197917 units343–702 ft²
$4.5M
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.
$319K
Median unit valueThe middle unit value in this building by our estimate: half the units are worth more, half less.
$468
Median $/ft²The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.

+7.1%vs the Billerica ZIP median sale $/ft² ($437)

Sales Performance

$240K
Median sale (12 mo)The middle sale price among this building's units that sold in the last 12 months, from recorded deeds.
—
1-yr changeHow the building's median sale price over the last 12 months compares with the 12 months before that.
2
Sales (12 mo)Units in this building that sold in the last 12 months, from recorded arms-length deeds.
11.8%
Turnover (12 mo)The share of units that changed hands in the last 12 months. Around 4–6% a year is typical; much higher can signal investor churn or a wave of exits.
This building's own appreciationThe building's own appreciation: for every unit that sold twice (held over a year), we compute its yearly price change between the two sales and take the middle value. This is the cleanest read on how this specific building performs, because it compares each unit to itself.
+5.0%per yeartypical hold 9.5 yrsfrom 27 same-unit resales
Median sale price (yearly, all time)Every recorded arms-length sale in the building since records begin, grouped by year: the bars count sales and the line tracks the median price paid.MedianSales
19871996200120062009201620192026
Sale price per ft² (yearly, all time)The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.$/ft²
19871996200120062009201620192026

44 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.
$171K$225K$280K$334K343 ft²415 ft²487 ft²558 ft²630 ft²702 ft²
1 bd2 bd
1 bed
6 units
2 bed
11 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.
2 bd · 1 ba · 701 ft²
5 units
1 bd · 1 ba · 596 ft²
2 units
1 bd · 1 ba · 598 ft²
2 units
2 bd · 1 ba · 665 ft²
2 units
One-off layouts
6 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.

$171K–$171K
1 unit
$267K–$271K
2 units
$277K–$278K
2 units
$311K–$313K
2 units
$319K–$334K
8 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.47%
Company-ownedUnits owned through an LLC, trust, or other company — a rough proxy for investor ownership.18%
Typical owner tenureThe middle number of years since each unit last changed hands — how long the current owners have been in place.9.8 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.0%
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.30%
Median owner equityThe middle dollar amount of equity (value minus loans) unit owners hold in this building.$281,101
Median tax billThe middle annual property tax bill among the building's units.$3,373
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 6Sep 9, 2026$310,000Unit 4Aug 31, 2026$170,000BuildingSep 22, 2022$317,000Unit 14Oct 20, 2021$270,000Unit 9Jun 2, 2020$187,500Unit 2Aug 29, 2019$220,502Unit 11Dec 12, 2018$209,000Unit 18May 31, 2018$208,500Unit 4Apr 20, 2018$90,000Unit 16Jan 31, 2018$114,050

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.$3,419 (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.$294,500 (2026)
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$294,500
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$291,600
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$336,585

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Condominium
StyleThe architectural style of the home, such as ranch or colonial.Condo/Apartment
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
PoolWhether the property has a pool, and what kind, such as in-ground.No

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
ParkerB-
Elementary · Grades KG–4 · 0.4 mi
H
Billerica Memorial High SchoolC+
High · Grades 8–12 · 0.7 mi
M
Marshall Middle SchoolB-
Middle · Grades 5–7 · 1.3 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.

7 Karen Cir
2 bd · 1 ba · 701 ft²
$330K
7 Karen Cir # 1
2 bd · 1 ba · 665 ft²
$313K
7 Karen Cir # 2
2 bd · 1 ba · 663 ft²
7 Karen Cir # 3
1 bd · 1 ba · 568 ft²
7 Karen Cir # 4
1 bd · 1 ba · 343 ft²
$171K
7 Karen Cir # 5
2 bd · 1 ba · 665 ft²
$319K
7 Karen Cir # 6
2 bd · 1 ba · 664 ft²
$311K
7 Karen Cir # 8
2 bd · 1 ba · 699 ft²
$333K
7 Karen Cir # 9
1 bd · 1 ba · 596 ft²
$271K
7 Karen Cir # 10
1 bd · 1 ba · 596 ft²
$277K
7 Karen Cir # 11
2 bd · 1 ba · 702 ft²
$329K
7 Karen Cir # 12
2 bd · 1 ba · 701 ft²
$328K
7 Karen Cir # 13
2 bd · 1 ba · 701 ft²
$325K
7 Karen Cir # 14
2 bd · 1 ba · 701 ft²
$334K
7 Karen Cir # 15
1 bd · 1 ba · 598 ft²
$278K
7 Karen Cir # 16
1 bd · 1 ba · 598 ft²
$267K
7 Karen Cir # 17
2 bd · 1 ba · 701 ft²
$323K
7 Karen Cir # 18
2 bd · 1 ba · 701 ft²
$325K

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

About 7 Karen Cir

How many units are in 7 Karen Cir, Billerica, MA?

7 Karen Cir, Billerica, MA has 17 residential units across built in 1979, according to county assessor records.

What is a unit at 7 Karen Cir, Billerica, MA worth?

The median TopHap Estimate across the 17 units at 7 Karen Cir, Billerica, MA is $319,138. That works out to $468 per square foot. Units run from 343 to 702 square feet. Estimates are modelled from recorded sales and assessments, not appraisals.

Is 7 Karen Cir, Billerica, MA expensive for Billerica?

Units at 7 Karen Cir, Billerica, MA carry a median of $468 per square foot, 7% above the Billerica median of $437 per square foot.

How often do units sell at 7 Karen Cir, Billerica, MA?

2 units at 7 Karen Cir, Billerica, MA sold in the last 12 months, out of 44 recorded arms-length sales all time. That is a turnover rate of 11.8% of the building per year. The median sale over that period was $240K.

Have units at 7 Karen Cir, Billerica, MA appreciated?

Across 27 repeat sales of the same unit, 7 Karen Cir, Billerica, MA returned a median 5.0% 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 9.5 years.

What floor plans does 7 Karen Cir, Billerica, MA have?

The most common plan at 7 Karen Cir, Billerica, MA is a 2-bedroom of 701 square feet, repeated 5 times, with a median estimate of $324,831. TopHap identifies 4 recurring plans in the building.

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Assigned schools

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