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Apartments (Generic)Residential

12 UNION ST

DOVER, NH 03820
0
Baths
0.22 ac
Lot SizeThe size of the land the home sits on, from county records.
1971
Year BuiltThe year the home was originally built, according to county records.
4
ParkingThe number of parking spaces on the property, including the garage.

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$13,542 (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.$688,100 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$169,100
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$519,000

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Apartments (Generic)
CountySTRAFFORD
Lot (acres)The size of the land the home sits on, from county records.0.22
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
HeatingThe type of heating system in the home.Electric
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(4)

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.

M
Dover Middle SchoolB-
Middle · Grades 5–8 · 1.0 mi
H
Dover High SchoolC
High · Grades 9–12 · 1.1 mi
E
Garrison Elementary SchoolB+
Elementary · Grades KG–4 · 1.7 mi

District: Dover School District

Neighborhood · ZIP 03820These 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.100
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.101
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.106

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.35%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.2%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.8%
PopulationHow many people live in this area.33,546
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,143 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$98,826
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$120,547
Average tempThe average temperature here across a full year.47°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.54%

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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 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.

  • Has a smaller lot than 85% of homes in Strafford County

How it measures up in Dover 03820

The dot is this home. The mark in the middle is the typical home in Dover 03820.

Lot size0.22 ac
SmallerTypical 0.39 acBigger

Bigger than 21% of homes nearby

Year built1971
OlderTypical 1976Newer

Newer than 47% of homes nearby

How 12 Union St ranks against every home in each area.
MeasureThis homeDover 03820Strafford County
Lot sizebigger than0.22 ac21% of homes15% of homes
Year builtnewer than197147% of homes38% of homes

About 12 Union St

When did 12 Union St, Dover, NH last sell?

12 Union St, Dover, NH last sold on Jan 1, 1900, according to the county's recorded deed.

When was 12 Union St, Dover, NH built?

12 Union St, Dover, NH was built in 1971, making it 55 years old.

What schools serve 12 Union St, Dover, NH?

12 Union St, Dover, NH is assigned to Dover Middle School (middle), rated B-; Dover High School (high), rated C; Garrison Elementary School (elementary), rated B+. All sit in Dover School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 12 Union St, Dover, NH compare to other homes in Dover 03820?

Among the 9,553 homes in Dover 03820, its lot is bigger than 21% of them (0.22 ac against a typical 0.39 ac) and it is newer than 47% of them (1971 against a typical 1976). 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 Union St, Dover, NH?

The 2025 property tax bill for 12 Union St, Dover, NH was $13,542. The county assessed it at $688,100.

More homes on Union St

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Assigned schools

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