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Single Family ResidenceResidential
$615,301$363 / 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

12 WILLIAM ST

NORTH ANDOVER, MA 01845
3
Beds
1
Baths
1,696 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.
0.24 ac
Lot SizeThe size of the land the home sits on, from county records.
1940
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

$615K
$582K low$649K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,082 (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.$540,100 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$299,700
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$240,400
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$522,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$542,450

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.Ranch
CountyESSEX
Lot (acres)The size of the land the home sits on, from county records.0.24
ConstructionThe main material the home's frame and walls are built from.Stone
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(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
ThomsonA-
Elementary · Grades 1–5 · 0.1 mi
M
North Andover Middle SchoolB
Middle · Grades 6–8 · 0.8 mi
H
North Andover High SchoolA
High · Grades 9–12 · 1.1 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

12 William 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.

  • Worth less than 70% of homes in North Andover 01845
  • Costs less per square foot than 66% of homes in Essex County
  • Smaller than 68% of homes in North Andover 01845
  • Has a smaller lot than 82% of homes in North Andover 01845
  • Older than 85% of homes in North Andover 01845

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
$274K$1.6M

This home is worth more than 30% 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$615,301
CheaperTypical $795,412Pricier

Pricier than 30% of homes nearby

Price per ft²$363
CheaperTypical $368Pricier

Pricier than 46% of homes nearby

Living area1,696 ft²
SmallerTypical 2,226 ft²Bigger

Bigger than 32% of homes nearby

Lot size0.24 ac
SmallerTypical 1 acBigger

Bigger than 18% of homes nearby

Year built1940
OlderTypical 1977Newer

Newer than 15% of homes nearby

How 12 William St ranks against every home in each area.
MeasureThis homeNorth Andover 01845Essex County
Estimated valuepricier than$615,30130% of homes38% of homes
Price per ft²pricier than$36346% of homes34% of homes
Living areabigger than1,696 ft²32% of homes43% of homes
Lot sizebigger than0.24 ac18% of homes47% of homes
Year builtnewer than194015% of homes38% of homes

About 12 William St

How much is 12 William St, North Andover, MA worth?

The TopHap Estimate for 12 William St, North Andover, MA is $615,301 as of Sep 24, 2026. The likely range is $581,684 to $648,918. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 12 William St, North Andover, MA last sell?

12 William St, North Andover, MA last sold on Jan 27, 2010, according to the county's recorded deed.

How big is 12 William St, North Andover, MA?

12 William St, North Andover, MA has 3 bedrooms, 1 bathrooms, 1,696 square feet of living space and a 0.24-acre lot.

When was 12 William St, North Andover, MA built?

12 William St, North Andover, MA was built in 1940, making it 86 years old. It is a ranch home. The building has 1 story.

What schools serve 12 William St, North Andover, MA?

12 William 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 12 William 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 30% of them ($615,301 against a typical $795,412), its price per square foot is higher than 46% of them ($363 against a typical $368), it is bigger than 32% of them (1,696 ft² against a typical 2,226 ft²), its lot is bigger than 18% of them (0.24 ac against a typical 1 ac) and it is newer than 15% of them (1940 against a typical 1977). Measured against all of Essex County, it is worth more than 38% 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 12 William St, North Andover, MA?

The 2025 property tax bill for 12 William St, North Andover, MA was $6,082. The county assessed it at $540,100.

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