Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$483,383$336 / 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 96How 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 $227,500 on Sep 26, 2007

231 PORTSMOUTH ST

CONCORD, NH 03301
3
Beds
1.5
Baths
1,440 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.
1.58 ac
Lot SizeThe size of the land the home sits on, from county records.
1983
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
7
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$483K
$465K low$502K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$227,500 · Sep 26, 2007

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,349 (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.$286,800 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$118,400
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$168,400
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$442,985

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.6
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.
25
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.Colonial
CountyMERRIMACK
Lot (acres)The size of the land the home sits on, from county records.1.58
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
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(7)

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
Mill Brook School
Elementary · Grades PK–2 · 0.8 mi
H
Concord High SchoolC-
High · Grades 9–12 · 3.3 mi
M
Rundlett Middle SchoolB-
Middle · Grades 6–8 · 3.5 mi

District: Concord School District

Neighborhood · ZIP 03301These 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.107
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.88
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.112

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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.24%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.11%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.7%
PopulationHow many people live in this area.35,397
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.661 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$88,381
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$106,718
Average tempThe average temperature here across a full year.46°F
Annual precipHow much rain and melted snow falls here in a typical year.40 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.54%

Owner Tools

Do you own this home?
Claim this home

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

231 Portsmouth 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 72% of homes in Concord Heights
  • Costs more per square foot than 78% of homes in Merrimack County
  • Smaller than 67% of homes in Merrimack County
  • Has a bigger lot than 78% of homes in Concord 03301
  • Newer than 68% of homes in Concord 03301

What homes are worth in Concord 03301

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

This home
$147K$941K

This home is worth more than 59% of homes in Concord 03301.

How it measures up in Concord 03301

The dot is this home. The mark in the middle is the typical home in Concord 03301.

Estimated value$483,383
CheaperTypical $449,202Pricier

Pricier than 59% of homes nearby

Price per ft²$336
CheaperTypical $292Pricier

Pricier than 76% of homes nearby

Living area1,440 ft²
SmallerTypical 1,579 ft²Bigger

Bigger than 43% of homes nearby

Lot size1.58 ac
SmallerTypical 0.34 acBigger

Bigger than 78% of homes nearby

Year built1983
OlderTypical 1964Newer

Newer than 68% of homes nearby

How 231 Portsmouth St ranks against every home in each area.
MeasureThis homeConcord HeightsConcord 03301Merrimack County
Estimated valuepricier than$483,38372% of homes59% of homes48% of homes
Price per ft²pricier than$33674% of homes76% of homes78% of homes
Living areabigger than1,440 ft²63% of homes43% of homes33% of homes
Lot sizebigger than1.58 ac71% of homes78% of homes54% of homes
Year builtnewer than198361% of homes68% of homes52% of homes

About 231 Portsmouth St

How much is 231 Portsmouth St, Concord, NH worth?

The TopHap Estimate for 231 Portsmouth St, Concord, NH is $483,383 as of Sep 24, 2026. The likely range is $464,990 to $501,776. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 231 Portsmouth St, Concord, NH last sell?

231 Portsmouth St, Concord, NH last sold on Sep 26, 2007 for $227,500, according to the county's recorded deed. TopHap holds 4 recorded sales for this parcel.

How big is 231 Portsmouth St, Concord, NH?

231 Portsmouth St, Concord, NH has 3 bedrooms, 1.5 bathrooms, 1,440 square feet of living space and a 1.58-acre lot.

When was 231 Portsmouth St, Concord, NH built?

231 Portsmouth St, Concord, NH was built in 1983, making it 43 years old. It is a colonial home. The building has 2 stories.

What schools serve 231 Portsmouth St, Concord, NH?

231 Portsmouth St, Concord, NH is assigned to Mill Brook School (elementary); Concord High School (high), rated C-; Rundlett Middle School (middle), rated B-. All sit in Concord School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 231 Portsmouth St, Concord, NH compare to other homes in Concord 03301?

Among the 8,695 homes in Concord 03301, it is worth more than 59% of them ($483,383 against a typical $449,202), its price per square foot is higher than 76% of them ($336 against a typical $292), it is bigger than 43% of them (1,440 ft² against a typical 1,579 ft²), its lot is bigger than 78% of them (1.58 ac against a typical 0.34 ac) and it is newer than 68% of them (1983 against a typical 1964). Measured against all of Merrimack County, it is worth more than 48% 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 231 Portsmouth St, Concord, NH?

The 2025 property tax bill for 231 Portsmouth St, Concord, NH was $8,349. The county assessed it at $286,800.

More homes on Portsmouth St

Closest homes

More homes in Concord 03301

Assigned schools

Explore the area

See this home in context

Open 231 Portsmouth St on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map