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Single Family ResidenceResidential
$469,268$312 / 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 95How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026
Last sold for $180,000 on Sep 1, 2010

21 PENN AVE

LOWELL, MA 01852
3
Beds
1
Baths
1,503 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.
0.1 ac
Lot SizeThe size of the land the home sits on, from county records.
1900
Year BuiltThe year the home was originally built, according to county records.
1
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

$469K
$446K low$493K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$180,000 · Sep 1, 2010

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,616 (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.$406,700 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$152,400
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$254,300
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$373,900
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$434,426

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Conventional
CountyMIDDLESEX
Lot (acres)The size of the land the home sits on, from county records.0.10
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Steam
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(2)

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
John J ShaughnessyD
Elementary · Grades PK–4 · 0.4 mi
M
B.F. Butler Middle SchoolD+
Middle · Grades 5–8 · 0.5 mi
H
Leblanc Therapeutic Day School
High · Grades 9–12 · 1.6 mi

District: Lowell School District

Neighborhood · ZIP 01852These 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.129
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.98
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.87

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.20%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.16%
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.38,007
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.7,196 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$68,803
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$89,531
Average tempThe average temperature here across a full year.48°F
Annual precipHow much rain and melted snow falls here in a typical year.45 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

21 Penn Ave 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 less than 88% of homes in Middlesex County
  • Costs less per square foot than 89% of homes in Middlesex County
  • Smaller than 65% of homes in Middlesex County
  • Has a smaller lot than 89% of homes in Middlesex County
  • Older than 85% of homes in Middlesex County

What homes are worth in Lowell 01852

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

This home
$209K$892K

This home is worth more than 59% of homes in Lowell 01852.

How it measures up in Lowell 01852

The dot is this home. The mark in the middle is the typical home in Lowell 01852.

Estimated value$469,268
CheaperTypical $439,573Pricier

Pricier than 59% of homes nearby

Price per ft²$312
CheaperTypical $306Pricier

Pricier than 53% of homes nearby

Living area1,503 ft²
SmallerTypical 1,540 ft²Bigger

Bigger than 48% of homes nearby

Lot size0.1 ac
SmallerTypical 0.19 acBigger

Bigger than 23% of homes nearby

Year built1900
OlderTypical 1950Newer

Newer than 28% of homes nearby

How 21 Penn Ave ranks against every home in each area.
MeasureThis homeSacred HeartLowell 01852Middlesex County
Estimated valuepricier than$469,26865% of homes59% of homes12% of homes
Price per ft²pricier than$31242% of homes53% of homes11% of homes
Living areabigger than1,503 ft²53% of homes48% of homes35% of homes
Lot sizebigger than0.1 ac37% of homes23% of homes11% of homes
Year builtnewer than190033% of homes28% of homes15% of homes

About 21 Penn Ave

How much is 21 Penn Ave, Lowell, MA worth?

The TopHap Estimate for 21 Penn Ave, Lowell, MA is $469,268 as of Sep 24, 2026. The likely range is $445,834 to $492,702. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Penn Ave, Lowell, MA last sell?

21 Penn Ave, Lowell, MA last sold on Sep 1, 2010 for $180,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 21 Penn Ave, Lowell, MA?

21 Penn Ave, Lowell, MA has 3 bedrooms, 1 bathrooms, 1,503 square feet of living space and a 0.10-acre lot.

When was 21 Penn Ave, Lowell, MA built?

21 Penn Ave, Lowell, MA was built in 1900, making it 126 years old. It is a conventional home. The building has 1 story.

What schools serve 21 Penn Ave, Lowell, MA?

21 Penn Ave, Lowell, MA is assigned to John J Shaughnessy (elementary), rated D; B.F. Butler Middle School (middle), rated D+; Leblanc Therapeutic Day School (high). All sit in Lowell School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Penn Ave, Lowell, MA compare to other homes in Lowell 01852?

Among the 8,439 homes in Lowell 01852, it is worth more than 59% of them ($469,268 against a typical $439,573), its price per square foot is higher than 53% of them ($312 against a typical $306), it is bigger than 48% of them (1,503 ft² against a typical 1,540 ft²), its lot is bigger than 23% of them (0.1 ac against a typical 0.19 ac) and it is newer than 28% of them (1900 against a typical 1950). Measured against all of Middlesex County, it is worth more than 12% 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 21 Penn Ave, Lowell, MA?

The 2026 property tax bill for 21 Penn Ave, Lowell, MA was $4,616. The county assessed it at $406,700.

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