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Single Family ResidenceResidential
$444,682$529 / 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 93How 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

21 COLLINS ST

SEABROOK, NH 03874
2
Beds
1
Baths
840 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.
0.75 ac
Lot SizeThe size of the land the home sits on, from county records.
1900
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
3
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$445K
$415K low$474K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,808 (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.$307,100 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$184,200
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$122,900
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$353,020

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
CountyROCKINGHAM
Lot (acres)The size of the land the home sits on, from county records.0.75
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
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(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.

M
Seabrook Middle SchoolD
Middle · Grades 5–8 · 1.0 mi
E
Seabrook Elementary SchoolD+
Elementary · Grades PK–4 · 1.0 mi
H
Winnacunnet High SchoolB
High · Grades 9–12 · 4.4 mi

District: Winnacunnet Cooperative School District

Neighborhood · ZIP 03874These 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.142
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.89
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.84%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.17%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.7%
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.8,644
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.911 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$84,550
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$117,811
Average tempThe average temperature here across a full year.48°F
Annual precipHow much rain and melted snow falls here in a typical year.47 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

21 Collins 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 89% of homes in Seabrook 03874
  • Costs more per square foot than 88% of homes in Rockingham County
  • Smaller than 92% of homes in Rockingham County
  • Has a bigger lot than 85% of homes in Seabrook 03874
  • Older than 97% of homes in Seabrook 03874

What homes are worth in Seabrook 03874

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

This home
$224K$3.1M

This home is worth more than 11% of homes in Seabrook 03874.

How it measures up in Seabrook 03874

The dot is this home. The mark in the middle is the typical home in Seabrook 03874.

Estimated value$444,682
CheaperTypical $653,505Pricier

Pricier than 11% of homes nearby

Price per ft²$529
CheaperTypical $360Pricier

Pricier than 76% of homes nearby

Living area840 ft²
SmallerTypical 1,566 ft²Bigger

Bigger than 10% of homes nearby

Lot size0.75 ac
SmallerTypical 0.35 acBigger

Bigger than 85% of homes nearby

Year built1900
OlderTypical 1989Newer

Newer than 3% of homes nearby

How 21 Collins St ranks against every home in each area.
MeasureThis homeSeabrook 03874Rockingham County
Estimated valuepricier than$444,68211% of homes16% of homes
Price per ft²pricier than$52976% of homes88% of homes
Living areabigger than840 ft²10% of homes8% of homes
Lot sizebigger than0.75 ac85% of homes43% of homes
Year builtnewer than19003% of homes7% of homes

About 21 Collins St

How much is 21 Collins St, Seabrook, NH worth?

The TopHap Estimate for 21 Collins St, Seabrook, NH is $444,682 as of Sep 24, 2026. The likely range is $415,084 to $474,280. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Collins St, Seabrook, NH last sell?

21 Collins St, Seabrook, NH last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 21 Collins St, Seabrook, NH?

21 Collins St, Seabrook, NH has 2 bedrooms, 1 bathrooms, 840 square feet of living space and a 0.75-acre lot.

When was 21 Collins St, Seabrook, NH built?

21 Collins St, Seabrook, NH was built in 1900, making it 126 years old. It is a conventional home. The building has 2 stories.

What schools serve 21 Collins St, Seabrook, NH?

21 Collins St, Seabrook, NH is assigned to Seabrook Middle School (middle), rated D; Seabrook Elementary School (elementary), rated D+; Winnacunnet High School (high), rated B. All sit in Winnacunnet Cooperative School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Collins St, Seabrook, NH compare to other homes in Seabrook 03874?

Among the 3,676 homes in Seabrook 03874, it is worth more than 11% of them ($444,682 against a typical $653,505), its price per square foot is higher than 76% of them ($529 against a typical $360), it is bigger than 10% of them (840 ft² against a typical 1,566 ft²), its lot is bigger than 85% of them (0.75 ac against a typical 0.35 ac) and it is newer than 3% of them (1900 against a typical 1989). Measured against all of Rockingham County, it is worth more than 16% 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 Collins St, Seabrook, NH?

The 2025 property tax bill for 21 Collins St, Seabrook, NH was $3,808. The county assessed it at $307,100.

More homes on Collins St

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