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Single Family ResidenceResidential
$1,013,105$715 / 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

315 PORTSMOUTH AVE

SEABROOK, NH 03874
3
Beds
2
Baths
1,417 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.
0.15 ac
Lot SizeThe size of the land the home sits on, from county records.
1956
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

$1M
$962K low$1.1M high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$9,657 (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.$778,800 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$609,800
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$169,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$738,340

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.30 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.53%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.1 percent flood zone

Scores 0–100; higher = greater projected risk.

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
CountyROCKINGHAM
Lot (acres)The size of the land the home sits on, from county records.0.15
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Hot Water
FireplaceWhether the home has a fireplace, and what kind.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

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

M
Seabrook Middle SchoolB-
Middle · Grades 5–8 · 1.7 mi
E
Seabrook Elementary SchoolB-
Elementary · Grades PK–4 · 1.7 mi
H
Winnacunnet High SchoolB-
High · Grades 9–12 · 2.9 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

315 Portsmouth Ave 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 more than 87% of homes in Rockingham County
  • Costs more per square foot than 95% of homes in Rockingham County
  • Smaller than 66% of homes in Rockingham County
  • Has a smaller lot than 89% of homes in Rockingham County
  • Older than 84% 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 79% 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$1,013,105
CheaperTypical $651,491Pricier

Pricier than 79% of homes nearby

Price per ft²$715
CheaperTypical $361Pricier

Pricier than 85% of homes nearby

Living area1,417 ft²
SmallerTypical 1,566 ft²Bigger

Bigger than 44% of homes nearby

Lot size0.15 ac
SmallerTypical 0.35 acBigger

Bigger than 24% of homes nearby

Year built1956
OlderTypical 1989Newer

Newer than 16% of homes nearby

How 315 Portsmouth Ave ranks against every home in each area.
MeasureThis homeSeabrook 03874Rockingham County
Estimated valuepricier than$1,013,10579% of homes87% of homes
Price per ft²pricier than$71585% of homes95% of homes
Living areabigger than1,417 ft²44% of homes34% of homes
Lot sizebigger than0.15 ac24% of homes11% of homes
Year builtnewer than195616% of homes18% of homes

About 315 Portsmouth Ave

How much is 315 Portsmouth Ave, Seabrook, NH worth?

The TopHap Estimate for 315 Portsmouth Ave, Seabrook, NH is $1,013,105 as of Sep 24, 2026. The likely range is $962,267 to $1,063,943. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 315 Portsmouth Ave, Seabrook, NH last sell?

315 Portsmouth Ave, Seabrook, NH last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 315 Portsmouth Ave, Seabrook, NH?

315 Portsmouth Ave, Seabrook, NH has 3 bedrooms, 2 bathrooms, 1,417 square feet of living space and a 0.15-acre lot.

When was 315 Portsmouth Ave, Seabrook, NH built?

315 Portsmouth Ave, Seabrook, NH was built in 1956, making it 70 years old. It is a ranch home. The building has 1 story.

What schools serve 315 Portsmouth Ave, Seabrook, NH?

315 Portsmouth Ave, Seabrook, NH is assigned to Seabrook Middle School (middle), rated B-; Seabrook Elementary School (elementary), rated B-; 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 315 Portsmouth Ave, Seabrook, NH compare to other homes in Seabrook 03874?

Among the 3,676 homes in Seabrook 03874, it is worth more than 79% of them ($1,013,105 against a typical $651,491), its price per square foot is higher than 85% of them ($715 against a typical $361), it is bigger than 44% of them (1,417 ft² against a typical 1,566 ft²), its lot is bigger than 24% of them (0.15 ac against a typical 0.35 ac) and it is newer than 16% of them (1956 against a typical 1989). Measured against all of Rockingham County, it is worth more than 87% 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 315 Portsmouth Ave, Seabrook, NH?

The 2025 property tax bill for 315 Portsmouth Ave, Seabrook, NH was $9,657. The county assessed it at $778,800.

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