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Single Family ResidenceResidential
$760,162$462 / 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 94How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026

630 DENNETT ST

PORTSMOUTH, NH 03801
2
Beds
1.5
Baths
1,645 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.
0.17 ac
Lot SizeThe size of the land the home sits on, from county records.
1975
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

$760K
$712K low$809K high
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$760,162
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$608,130

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,702 (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.$669,200 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$373,200
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$296,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$737,580

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.Cape Cod
CountyROCKINGHAM
Lot (acres)The size of the land the home sits on, from county records.0.17
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Hot Water
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.

E
New Franklin Elementary SchoolA
Elementary · Grades KG–5 · 0.2 mi
M
Portsmouth Middle SchoolB
Middle · Grades 6–8 · 0.9 mi
H
Portsmouth High SchoolA+
High · Grades 9–12 · 1.2 mi

District: Portsmouth School District

Neighborhood · ZIP 03801These 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.138
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.104
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.98

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.41%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.0%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.9%
PopulationHow many people live in this area.24,014
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.808 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$107,161
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$136,932
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%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Absentee owner
Company ownedWhether the owner is a company or trust rather than a person.Yes

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

630 Dennett 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 more than 73% of homes in Rockingham County
  • Costs more per square foot than 82% of homes in Rockingham County
  • Has a smaller lot than 88% of homes in Rockingham County
  • Newer than 72% of homes in Christian Shore / Creek

What homes are worth in Portsmouth 03801

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

This home
$280K$2.8M

This home is worth more than 47% of homes in Portsmouth 03801.

How it measures up in Portsmouth 03801

The dot is this home. The mark in the middle is the typical home in Portsmouth 03801.

Estimated value$760,162
CheaperTypical $789,492Pricier

Pricier than 47% of homes nearby

Price per ft²$462
CheaperTypical $543Pricier

Pricier than 30% of homes nearby

Living area1,645 ft²
SmallerTypical 1,512 ft²Bigger

Bigger than 56% of homes nearby

Lot size0.17 ac
SmallerTypical 0.22 acBigger

Bigger than 33% of homes nearby

Year built1975
OlderTypical 1962Newer

Newer than 57% of homes nearby

How 630 Dennett St ranks against every home in each area.
MeasureThis homeChristian Shore / CreekPortsmouth 03801Rockingham County
Estimated valuepricier than$760,16236% of homes47% of homes73% of homes
Price per ft²pricier than$46221% of homes30% of homes82% of homes
Living areabigger than1,645 ft²50% of homes56% of homes44% of homes
Lot sizebigger than0.17 ac48% of homes33% of homes12% of homes
Year builtnewer than197572% of homes57% of homes36% of homes

About 630 Dennett St

How much is 630 Dennett St, Portsmouth, NH worth?

The TopHap Estimate for 630 Dennett St, Portsmouth, NH is $760,162 as of Jul 14, 2026. The likely range is $711,504 to $808,820. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 630 Dennett St, Portsmouth, NH last sell?

630 Dennett St, Portsmouth, NH last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 630 Dennett St, Portsmouth, NH?

630 Dennett St, Portsmouth, NH has 2 bedrooms, 1.5 bathrooms, 1,645 square feet of living space and a 0.17-acre lot.

When was 630 Dennett St, Portsmouth, NH built?

630 Dennett St, Portsmouth, NH was built in 1975, making it 51 years old. It is a cape cod home. The building has 2 stories.

What schools serve 630 Dennett St, Portsmouth, NH?

630 Dennett St, Portsmouth, NH is assigned to New Franklin Elementary School (elementary), rated A; Portsmouth Middle School (middle), rated B; Portsmouth High School (high), rated A+. All sit in Portsmouth School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 630 Dennett St, Portsmouth, NH compare to other homes in Portsmouth 03801?

Among the 8,130 homes in Portsmouth 03801, it is worth more than 47% of them ($760,162 against a typical $789,492), its price per square foot is higher than 30% of them ($462 against a typical $543), it is bigger than 56% of them (1,645 ft² against a typical 1,512 ft²), its lot is bigger than 33% of them (0.17 ac against a typical 0.22 ac) and it is newer than 57% of them (1975 against a typical 1962). Measured against all of Rockingham County, it is worth more than 73% 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 630 Dennett St, Portsmouth, NH?

The 2025 property tax bill for 630 Dennett St, Portsmouth, NH was $7,702. The county assessed it at $669,200.

Closest homes

More homes in Portsmouth 03801

Assigned schools

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