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Single Family ResidenceResidential
$2,508,405$871 / 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 85How 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 $407,000 on Apr 28, 2005

146 PORTSMOUTH AVE

NEW CASTLE, NH 03854
3
Beds
1.5
Baths
2,880 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.
0.24 ac
Lot SizeThe size of the land the home sits on, from county records.
1906
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$2.5M
$2.1M low$2.9M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$407,000 · Apr 28, 2005

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,837 (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.$1,268,400 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$834,200
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$434,200
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$2,081,450

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.32
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
7
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.
86
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.

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.Conventional
CountyROCKINGHAM
Lot (acres)The size of the land the home sits on, from county records.0.24
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
ViewThe type of view from the property, or another feature of the site that affects value.Waterfront-Not Specified

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
Maude H. Trefethen SchoolA+
Elementary · Grades KG–5 · 0.2 mi
M
Portsmouth Middle SchoolA
Middle · Grades 6–8 · 1.6 mi
H
Portsmouth High SchoolA
High · Grades 9–12 · 2.1 mi

District: Portsmouth School District

Neighborhood · ZIP 03854These 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.152
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.107
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.101

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.89%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.43%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.5%
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.874
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.454 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$173,461
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$279,784
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

146 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.

  • Among the most valuable homes in Rockingham County
  • Costs more per square foot than 98% of homes in Rockingham County
  • Bigger than 85% of homes in Rockingham County
  • Has a smaller lot than 81% of homes in Rockingham County
  • Older than 93% of homes in Rockingham County

What homes are worth in New Castle 03854

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

This home
$1.4M$6.8M

This home is worth more than 40% of homes in New Castle 03854.

How it measures up in New Castle 03854

The dot is this home. The mark in the middle is the typical home in New Castle 03854.

Estimated value$2,508,405
CheaperTypical $2,814,273Pricier

Pricier than 40% of homes nearby

Price per ft²$871
CheaperTypical $924Pricier

Pricier than 40% of homes nearby

Living area2,880 ft²
SmallerTypical 3,088 ft²Bigger

Bigger than 43% of homes nearby

Lot size0.24 ac
SmallerTypical 0.3 acBigger

Bigger than 34% of homes nearby

Year built1906
OlderTypical 1973Newer

Newer than 22% of homes nearby

How 146 Portsmouth Ave ranks against every home in each area.
MeasureThis homeNew Castle 03854Rockingham County
Estimated valuepricier than$2,508,40540% of homesalmost all homes
Price per ft²pricier than$87140% of homes98% of homes
Living areabigger than2,880 ft²43% of homes85% of homes
Lot sizebigger than0.24 ac34% of homes19% of homes
Year builtnewer than190622% of homes7% of homes

About 146 Portsmouth Ave

How much is 146 Portsmouth Ave, New Castle, NH worth?

The TopHap Estimate for 146 Portsmouth Ave, New Castle, NH is $2,508,405 as of Sep 24, 2026. The likely range is $2,120,277 to $2,896,533. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 146 Portsmouth Ave, New Castle, NH last sell?

146 Portsmouth Ave, New Castle, NH last sold on Apr 28, 2005 for $407,000, according to the county's recorded deed.

How big is 146 Portsmouth Ave, New Castle, NH?

146 Portsmouth Ave, New Castle, NH has 3 bedrooms, 1.5 bathrooms, 2,880 square feet of living space and a 0.24-acre lot.

When was 146 Portsmouth Ave, New Castle, NH built?

146 Portsmouth Ave, New Castle, NH was built in 1906, making it 120 years old. It is a conventional home. The building has 2 stories.

What schools serve 146 Portsmouth Ave, New Castle, NH?

146 Portsmouth Ave, New Castle, NH is assigned to Maude H. Trefethen School (elementary), rated A+; Portsmouth Middle School (middle), rated A; 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 146 Portsmouth Ave, New Castle, NH compare to other homes in New Castle 03854?

Among the 500 homes in New Castle 03854, it is worth more than 40% of them ($2,508,405 against a typical $2,814,273), its price per square foot is higher than 40% of them ($871 against a typical $924), it is bigger than 43% of them (2,880 ft² against a typical 3,088 ft²), its lot is bigger than 34% of them (0.24 ac against a typical 0.3 ac) and it is newer than 22% of them (1906 against a typical 1973). Measured against all of Rockingham County, it is worth more than almost all 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 146 Portsmouth Ave, New Castle, NH?

The 2025 property tax bill for 146 Portsmouth Ave, New Castle, NH was $6,837. The county assessed it at $1,268,400.

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