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Single Family ResidenceResidential
$780,374$441 / 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 94How 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 $413,000 on Jan 13, 2012

18 UNION ST

NORTH ANDOVER, MA 01845
4
Beds
2.5
Baths
1,768 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.
0.29 ac
Lot SizeThe size of the land the home sits on, from county records.
1995
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

$780K
$736K low$824K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$413,000 · Jan 13, 2012

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,356 (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.$653,300 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$241,700
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$411,600
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$645,100
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$683,050

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.Colonial
CountyESSEX
Lot (acres)The size of the land the home sits on, from county records.0.29
ConstructionThe main material the home's frame and walls are built from.Concrete
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(7)

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
ThomsonA-
Elementary · Grades 1–5 · 0.2 mi
M
North Andover Middle SchoolB
Middle · Grades 6–8 · 0.9 mi
H
North Andover High SchoolA
High · Grades 9–12 · 1.0 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

18 Union 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.

  • Costs more per square foot than 88% of homes in North Andover 01845
  • Smaller than 66% of homes in North Andover 01845
  • Has a smaller lot than 76% of homes in North Andover 01845
  • Newer than 86% 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$1.5M

This home is worth more than 49% 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$780,374
CheaperTypical $787,502Pricier

Pricier than 49% of homes nearby

Price per ft²$441
CheaperTypical $364Pricier

Pricier than 88% of homes nearby

Living area1,768 ft²
SmallerTypical 2,215 ft²Bigger

Bigger than 34% of homes nearby

Lot size0.29 ac
SmallerTypical 1 acBigger

Bigger than 24% of homes nearby

Year built1995
OlderTypical 1977Newer

Newer than 79% of homes nearby

How 18 Union St ranks against every home in each area.
MeasureThis homeNorth Andover 01845Essex County
Estimated valuepricier than$780,37449% of homes62% of homes
Price per ft²pricier than$44188% of homes63% of homes
Living areabigger than1,768 ft²34% of homes47% of homes
Lot sizebigger than0.29 ac24% of homes54% of homes
Year builtnewer than199579% of homes86% of homes

About 18 Union St

How much is 18 Union St, North Andover, MA worth?

The TopHap Estimate for 18 Union St, North Andover, MA is $780,374 as of Aug 30, 2026. The likely range is $736,476 to $824,272. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 18 Union St, North Andover, MA last sell?

18 Union St, North Andover, MA last sold on Jan 13, 2012 for $413,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 18 Union St, North Andover, MA?

18 Union St, North Andover, MA has 4 bedrooms, 2.5 bathrooms, 1,768 square feet of living space and a 0.29-acre lot.

When was 18 Union St, North Andover, MA built?

18 Union St, North Andover, MA was built in 1995, making it 31 years old. It is a colonial home. The building has 2 stories.

What schools serve 18 Union St, North Andover, MA?

18 Union St, North Andover, MA is assigned to Thomson (elementary), rated A-; 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 18 Union St, 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 49% of them ($780,374 against a typical $787,502), its price per square foot is higher than 88% of them ($441 against a typical $364), it is bigger than 34% of them (1,768 ft² against a typical 2,215 ft²), its lot is bigger than 24% of them (0.29 ac against a typical 1 ac) and it is newer than 79% of them (1995 against a typical 1977). Measured against all of Essex County, it is worth more than 62% 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 18 Union St, North Andover, MA?

The 2025 property tax bill for 18 Union St, North Andover, MA was $7,356. The county assessed it at $653,300.

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