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Single Family ResidenceResidential
$434,445$327 / 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 98How 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

15 NILES ST

DOVER, NH 03820
3
Beds
2
Baths
1,330 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.
1860
Year BuiltThe year the home was originally built, according to county records.
2
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

$434K
$424K low$445K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,132 (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.$413,200 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$162,900
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$250,300
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$424,840

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
CountySTRAFFORD
Lot (acres)The size of the land the home sits on, from county records.0.26
HeatingThe type of heating system in the home.Steam
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
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck

Transaction History(1)

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 · 1.2 mi
H
Dover High SchoolC
High · Grades 9–12 · 1.4 mi
E
Garrison Elementary SchoolB+
Elementary · Grades KG–4 · 1.8 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

15 Niles 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 76% of homes in Dover 03820
  • Smaller than 68% of homes in Dover 03820
  • Has a smaller lot than 78% of homes in Strafford County
  • Older than 97% of homes in Dover 03820

What homes are worth in Dover 03820

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

This home
$217K$1.4M

This home is worth more than 24% of homes in Dover 03820.

How it measures up in Dover 03820

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

Estimated value$434,445
CheaperTypical $549,004Pricier

Pricier than 24% of homes nearby

Price per ft²$327
CheaperTypical $345Pricier

Pricier than 38% of homes nearby

Living area1,330 ft²
SmallerTypical 1,674 ft²Bigger

Bigger than 32% of homes nearby

Lot size0.26 ac
SmallerTypical 0.4 acBigger

Bigger than 32% of homes nearby

Year built1860
OlderTypical 1975Newer

Newer than 3% of homes nearby

How 15 Niles St ranks against every home in each area.
MeasureThis homeDover 03820Strafford County
Estimated valuepricier than$434,44524% of homes31% of homes
Price per ft²pricier than$32738% of homes63% of homes
Living areabigger than1,330 ft²32% of homes33% of homes
Lot sizebigger than0.26 ac32% of homes22% of homes
Year builtnewer than18603% of homes4% of homes

About 15 Niles St

How much is 15 Niles St, Dover, NH worth?

The TopHap Estimate for 15 Niles St, Dover, NH is $434,445 as of Sep 24, 2026. The likely range is $423,935 to $444,955. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 15 Niles St, Dover, NH last sell?

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

How big is 15 Niles St, Dover, NH?

15 Niles St, Dover, NH has 3 bedrooms, 2 bathrooms, 1,330 square feet of living space and a 0.26-acre lot.

When was 15 Niles St, Dover, NH built?

15 Niles St, Dover, NH was built in 1860, making it 166 years old. It is a conventional home. The building has 2 stories.

What schools serve 15 Niles St, Dover, NH?

15 Niles 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 15 Niles St, Dover, NH compare to other homes in Dover 03820?

Among the 9,553 homes in Dover 03820, it is worth more than 24% of them ($434,445 against a typical $549,004), its price per square foot is higher than 38% of them ($327 against a typical $345), it is bigger than 32% of them (1,330 ft² against a typical 1,674 ft²), its lot is bigger than 32% of them (0.26 ac against a typical 0.4 ac) and it is newer than 3% of them (1860 against a typical 1975). Measured against all of Strafford County, it is worth more than 31% 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 15 Niles St, Dover, NH?

The 2025 property tax bill for 15 Niles St, Dover, NH was $8,132. The county assessed it at $413,200.

More homes on Niles St

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Assigned schools

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