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Single Family ResidenceResidential
$1,439,978$1,319 / 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 84How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026
Last sold for $1,400,000 on Nov 14, 2025

550 SAGAMORE AVE

PORTSMOUTH, NH 03801
3
Beds
1.5
Baths
1,092 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.
1.48 ac
Lot SizeThe size of the land the home sits on, from county records.
1960
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
5
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$1.4M
$1.2M low$1.7M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$1,400,000 · Nov 14, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$18,432 (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.$1,601,400 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$1,327,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$273,900
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$811,100
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,236,995

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.33
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
12
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
50
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
83
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
20
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
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.minimal

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.1.48
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
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
CoolingThe type of cooling or air conditioning in the home.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Basement
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.

E
Little Harbour Elementary SchoolA
Elementary · Grades KG–5 · 0.5 mi
H
Portsmouth High SchoolA+
High · Grades 9–12 · 0.6 mi
M
Portsmouth Middle SchoolB
Middle · Grades 6–8 · 1.0 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%

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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

550 Sagamore 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 96% of homes in Rockingham County
  • Among the highest price per square foot in Rockingham County
  • Smaller than 82% of homes in Rockingham County
  • Has a bigger lot than 93% of homes in Portsmouth 03801
  • Older than 78% of homes in Rockingham County

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
$276K$2.8M

This home is worth more than 85% 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$1,439,978
CheaperTypical $799,993Pricier

Pricier than 85% of homes nearby

Price per ft²$1319
CheaperTypical $554Pricier

Pricier than 98% of homes nearby

Living area1,092 ft²
SmallerTypical 1,520 ft²Bigger

Bigger than 27% of homes nearby

Lot size1.48 ac
SmallerTypical 0.22 acBigger

Bigger than 93% of homes nearby

Year built1960
OlderTypical 1963Newer

Newer than 49% of homes nearby

How 550 Sagamore Ave ranks against every home in each area.
MeasureThis homePortsmouth 03801Rockingham County
Estimated valuepricier than$1,439,97885% of homes96% of homes
Price per ft²pricier than$131998% of homesalmost all homes
Living areabigger than1,092 ft²27% of homes18% of homes
Lot sizebigger than1.48 ac93% of homes67% of homes
Year builtnewer than196049% of homes22% of homes

About 550 Sagamore Ave

How much is 550 Sagamore Ave, Portsmouth, NH worth?

The TopHap Estimate for 550 Sagamore Ave, Portsmouth, NH is $1,439,978 as of Aug 30, 2026. The likely range is $1,213,205 to $1,666,751. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 550 Sagamore Ave, Portsmouth, NH last sell?

550 Sagamore Ave, Portsmouth, NH last sold on Nov 14, 2025 for $1,400,000, according to the county's recorded deed.

How big is 550 Sagamore Ave, Portsmouth, NH?

550 Sagamore Ave, Portsmouth, NH has 3 bedrooms, 1.5 bathrooms, 1,092 square feet of living space and a 1.48-acre lot.

When was 550 Sagamore Ave, Portsmouth, NH built?

550 Sagamore Ave, Portsmouth, NH was built in 1960, making it 66 years old. It is a ranch home. The building has 1 story.

What schools serve 550 Sagamore Ave, Portsmouth, NH?

550 Sagamore Ave, Portsmouth, NH is assigned to Little Harbour Elementary School (elementary), rated A; Portsmouth High School (high), rated A+; Portsmouth Middle School (middle), rated B. All sit in Portsmouth School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 550 Sagamore Ave, Portsmouth, NH compare to other homes in Portsmouth 03801?

Among the 8,130 homes in Portsmouth 03801, it is worth more than 85% of them ($1,439,978 against a typical $799,993), its price per square foot is higher than 98% of them ($1319 against a typical $554), it is bigger than 27% of them (1,092 ft² against a typical 1,520 ft²), its lot is bigger than 93% of them (1.48 ac against a typical 0.22 ac) and it is newer than 49% of them (1960 against a typical 1963). Measured against all of Rockingham County, it is worth more than 96% 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 550 Sagamore Ave, Portsmouth, NH?

The 2025 property tax bill for 550 Sagamore Ave, Portsmouth, NH was $18,432. The county assessed it at $1,601,400.

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