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CondominiumResidential
$545,577$339 / 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 87How 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 $315,000 on Aug 15, 2011

21 WALNUT AVE

NORTH ANDOVER, MA 01845
4
Beds
2.5
Baths
1,610 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.
0.26 ac
Lot SizeThe size of the land the home sits on, from county records.
2004
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
7
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$546K
$475K low$616K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$315,000 · Aug 15, 2011

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,093 (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.$452,300 (2025)
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$452,300
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$432,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$538,460

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Condominium
CountyESSEX
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
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
AtkinsonD+
Elementary · Grades 1–5 · 0.2 mi
M
North Andover Middle SchoolB
Middle · Grades 6–8 · 0.3 mi
H
North Andover High SchoolA
High · Grades 9–12 · 0.9 mi

District: North Andover School District

Neighborhood · ZIP 01845These 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.61
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.97
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.95

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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.33%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.5%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.4%
PopulationHow many people live in this area.33,053
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,181 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$137,878
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$165,511
Average tempThe average temperature here across a full year.48°F
Annual precipHow much rain and melted snow falls here in a typical year.46 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 Walnut 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 77% of homes in North Andover 01845
  • Costs less per square foot than 76% of homes in Essex County
  • Smaller than 71% of homes in North Andover 01845
  • Has a smaller lot than 80% of homes in North Andover 01845
  • Newer than 92% of homes in Essex County

What homes are worth in North Andover 01845

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

This home
$278K$1.6M

This home is worth more than 23% of homes in North Andover 01845.

How it measures up in North Andover 01845

The dot is this home. The mark in the middle is the typical home in North Andover 01845.

Estimated value$545,577
CheaperTypical $788,786Pricier

Pricier than 23% of homes nearby

Price per ft²$339
CheaperTypical $364Pricier

Pricier than 34% of homes nearby

Living area1,610 ft²
SmallerTypical 2,218 ft²Bigger

Bigger than 29% of homes nearby

Lot size0.26 ac
SmallerTypical 1 acBigger

Bigger than 20% of homes nearby

Year built2004
OlderTypical 1977Newer

Newer than 90% of homes nearby

How 21 Walnut Ave ranks against every home in each area.
MeasureThis homeNorth Andover 01845Essex County
Estimated valuepricier than$545,57723% of homes25% of homes
Price per ft²pricier than$33934% of homes24% of homes
Living areabigger than1,610 ft²29% of homes39% of homes
Lot sizebigger than0.26 ac20% of homes50% of homes
Year builtnewer than200490% of homes92% of homes

About 21 Walnut Ave

How much is 21 Walnut Ave, North Andover, MA worth?

The TopHap Estimate for 21 Walnut Ave, North Andover, MA is $545,577 as of Aug 30, 2026. The likely range is $475,031 to $616,123. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Walnut Ave, North Andover, MA last sell?

21 Walnut Ave, North Andover, MA last sold on Aug 15, 2011 for $315,000, according to the county's recorded deed.

How big is 21 Walnut Ave, North Andover, MA?

21 Walnut Ave, North Andover, MA has 4 bedrooms, 2.5 bathrooms and 1,610 square feet of living space.

When was 21 Walnut Ave, North Andover, MA built?

21 Walnut Ave, North Andover, MA was built in 2004, making it 22 years old. The building has 2 stories.

What schools serve 21 Walnut Ave, North Andover, MA?

21 Walnut Ave, North Andover, MA is assigned to Atkinson (elementary), rated D+; North Andover Middle School (middle), rated B; North Andover High School (high), rated A. All sit in North Andover School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Walnut Ave, North Andover, MA compare to other homes in North Andover 01845?

Among the 9,078 homes in North Andover 01845, it is worth more than 23% of them ($545,577 against a typical $788,786), its price per square foot is higher than 34% of them ($339 against a typical $364), it is bigger than 29% of them (1,610 ft² against a typical 2,218 ft²), its lot is bigger than 20% of them (0.26 ac against a typical 1 ac) and it is newer than 90% of them (2004 against a typical 1977). Measured against all of Essex County, it is worth more than 25% 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 Walnut Ave, North Andover, MA?

The 2025 property tax bill for 21 Walnut Ave, North Andover, MA was $5,093. The county assessed it at $452,300.

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