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Single Family ResidenceResidential
$561,350$247 / 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 89How 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

15 PORTSMOUTH ST

CONCORD, NH 03301
4
Beds
2
Baths
2,270 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.
0.82 ac
Lot SizeThe size of the land the home sits on, from county records.
1820
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
10
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$561K
$502K low$621K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$10,788 (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.$370,600 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$148,900
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$221,700

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.42
44
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.
55
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
81
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
25
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.10 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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.0.2 percent flood zone

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
CountyMERRIMACK
Lot (acres)The size of the land the home sits on, from county records.0.82
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

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
Mill Brook School
Elementary · Grades PK–2 · 1.0 mi
H
Concord High SchoolD+
High · Grades 9–12 · 2.4 mi
M
Rundlett Middle SchoolC-
Middle · Grades 6–8 · 3.0 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%

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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

15 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 74% of homes in Concord 03301
  • Costs less per square foot than 93% of homes in East Concord
  • Bigger than 77% of homes in Concord 03301
  • Has a bigger lot than 69% of homes in Concord 03301
  • Among the oldest 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
$145K$931K

This home is worth more than 74% 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$561,350
CheaperTypical $449,155Pricier

Pricier than 74% of homes nearby

Price per ft²$247
CheaperTypical $291Pricier

Pricier than 20% of homes nearby

Living area2,270 ft²
SmallerTypical 1,585 ft²Bigger

Bigger than 77% of homes nearby

Lot size0.82 ac
SmallerTypical 0.34 acBigger

Bigger than 69% of homes nearby

Year built1820
OlderTypical 1964Newer

Older than almost all homes nearby

How 15 Portsmouth St ranks against every home in each area.
MeasureThis homeEast ConcordConcord 03301Merrimack County
Estimated valuepricier than$561,35056% of homes74% of homes65% of homes
Price per ft²pricier than$2477% of homes20% of homes31% of homes
Living areabigger than2,270 ft²74% of homes77% of homes70% of homes
Lot sizebigger than0.82 ac53% of homes69% of homes39% of homes
Year builtnewer than18203% of homesalmost no homes3% of homes

About 15 Portsmouth St

How much is 15 Portsmouth St, Concord, NH worth?

The TopHap Estimate for 15 Portsmouth St, Concord, NH is $561,350 as of Sep 24, 2026. The likely range is $501,595 to $621,105. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 15 Portsmouth St, Concord, NH last sell?

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

How big is 15 Portsmouth St, Concord, NH?

15 Portsmouth St, Concord, NH has 4 bedrooms, 2 bathrooms, 2,270 square feet of living space and a 0.82-acre lot.

When was 15 Portsmouth St, Concord, NH built?

15 Portsmouth St, Concord, NH was built in 1820, making it 206 years old. It is a conventional home. The building has 2 stories.

What schools serve 15 Portsmouth St, Concord, NH?

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

How does 15 Portsmouth St, Concord, NH compare to other homes in Concord 03301?

Among the 8,695 homes in Concord 03301, it is worth more than 74% of them ($561,350 against a typical $449,155), its price per square foot is higher than 20% of them ($247 against a typical $291), it is bigger than 77% of them (2,270 ft² against a typical 1,585 ft²), its lot is bigger than 69% of them (0.82 ac against a typical 0.34 ac) and it is newer than almost none of them (1820 against a typical 1964). Measured against all of Merrimack County, it is worth more than 65% 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 15 Portsmouth St, Concord, NH?

The 2025 property tax bill for 15 Portsmouth St, Concord, NH was $10,788. The county assessed it at $370,600.

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