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Single Family ResidenceResidential
$565,042$430 / 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 Sep 24, 2026
Last sold for $565,000 on Feb 12, 2026

166 DECATUR RD

PORTSMOUTH, NH 03801
3
Beds
2
Baths
1,313 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.
0.2 ac
Lot SizeThe size of the land the home sits on, from county records.
1940
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

$565K
$531K low$599K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$565,000 · Feb 12, 2026

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,434 (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.$559,000 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$257,900
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$301,100
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$514,615

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.0.20
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
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
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.

E
New Franklin Elementary SchoolA+
Elementary · Grades KG–5 · 1.4 mi
H
Portsmouth High SchoolA
High · Grades 9–12 · 1.7 mi
M
Portsmouth Middle SchoolA
Middle · Grades 6–8 · 2.1 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

166 Decatur Rd 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 80% of homes in Portsmouth 03801
  • Costs less per square foot than 81% of homes in Portsmouth 03801
  • Smaller than 71% of homes in Rockingham County
  • Has a smaller lot than 85% of homes in Rockingham County
  • Older than 88% 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
$301K$3M

This home is worth more than 20% 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$565,042
CheaperTypical $840,000Pricier

Pricier than 20% of homes nearby

Price per ft²$430
CheaperTypical $582Pricier

Pricier than 19% of homes nearby

Living area1,313 ft²
SmallerTypical 1,519 ft²Bigger

Bigger than 39% of homes nearby

Lot size0.2 ac
SmallerTypical 0.22 acBigger

Bigger than 45% of homes nearby

Year built1940
OlderTypical 1962Newer

Newer than 35% of homes nearby

How 166 Decatur Rd ranks against every home in each area.
MeasureThis homePortsmouth 03801Rockingham County
Estimated valuepricier than$565,04220% of homes37% of homes
Price per ft²pricier than$43019% of homes76% of homes
Living areabigger than1,313 ft²39% of homes29% of homes
Lot sizebigger than0.2 ac45% of homes15% of homes
Year builtnewer than194035% of homes12% of homes

About 166 Decatur Rd

How much is 166 Decatur Rd, Portsmouth, NH worth?

The TopHap Estimate for 166 Decatur Rd, Portsmouth, NH is $565,042 as of Sep 24, 2026. The likely range is $530,731 to $599,353. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 166 Decatur Rd, Portsmouth, NH last sell?

166 Decatur Rd, Portsmouth, NH last sold on Feb 12, 2026 for $565,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 166 Decatur Rd, Portsmouth, NH?

166 Decatur Rd, Portsmouth, NH has 3 bedrooms, 2 bathrooms, 1,313 square feet of living space and a 0.20-acre lot.

When was 166 Decatur Rd, Portsmouth, NH built?

166 Decatur Rd, Portsmouth, NH was built in 1940, making it 86 years old. It is a cape cod home. The building has 1 story.

What schools serve 166 Decatur Rd, Portsmouth, NH?

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

How does 166 Decatur Rd, Portsmouth, NH compare to other homes in Portsmouth 03801?

Among the 8,130 homes in Portsmouth 03801, it is worth more than 20% of them ($565,042 against a typical $840,000), its price per square foot is higher than 19% of them ($430 against a typical $582), it is bigger than 39% of them (1,313 ft² against a typical 1,519 ft²), its lot is bigger than 45% of them (0.2 ac against a typical 0.22 ac) and it is newer than 35% of them (1940 against a typical 1962). Measured against all of Rockingham County, it is worth more than 37% 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 166 Decatur Rd, Portsmouth, NH?

The 2025 property tax bill for 166 Decatur Rd, Portsmouth, NH was $6,434. The county assessed it at $559,000.

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