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CondominiumResidential
$332,819$243 / 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 Aug 30, 2026
Last sold for $152,500 on Nov 22, 2002

21 ELM ST

MERRIMACK, NH 03054
2
Beds
1.5
Baths
1,368 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.
1981
Year BuiltThe year the home was originally built, according to county records.
2
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.

Valuation

$333K
$321K low$345K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$152,500 · Nov 22, 2002

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,064 (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.$183,800 (2025)
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$183,800
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$181,900
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$323,475

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Condominium
CountyHILLSBOROUGH
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.Hot Water
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
Reeds Ferry SchoolA+
Elementary · Grades PK–4 · 1.0 mi
H
Merrimack High SchoolC
High · Grades 9–12 · 1.6 mi
M
Merrimack Middle SchoolC+
Middle · Grades 7–8 · 3.3 mi

District: Merrimack School District

Neighborhood · ZIP 03054These 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.49
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.92
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.88

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.97%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.30%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.4%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.27,283
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.817 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$123,868
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$143,079
Average tempThe average temperature here across a full year.47°F
Annual precipHow much rain and melted snow falls here in a typical year.45 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

21 Elm 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 less than 94% of homes in Merrimack 03054
  • Costs less per square foot than 82% of homes in Hillsborough County
  • Smaller than 85% of homes in Merrimack 03054

What homes are worth in Merrimack 03054

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

This home
$283K$952K

This home is worth more than 6% of homes in Merrimack 03054.

How it measures up in Merrimack 03054

The dot is this home. The mark in the middle is the typical home in Merrimack 03054.

Estimated value$332,819
CheaperTypical $549,602Pricier

Pricier than 6% of homes nearby

Price per ft²$243
CheaperTypical $263Pricier

Pricier than 31% of homes nearby

Living area1,368 ft²
SmallerTypical 2,012 ft²Bigger

Bigger than 15% of homes nearby

Year built1981
OlderTypical 1984Newer

Newer than 44% of homes nearby

How 21 Elm St ranks against every home in each area.
MeasureThis homeMerrimack 03054Hillsborough County
Estimated valuepricier than$332,8196% of homes10% of homes
Price per ft²pricier than$24331% of homes18% of homes
Living areabigger than1,368 ft²15% of homes31% of homes
Year builtnewer than198144% of homes52% of homes

About 21 Elm St

How much is 21 Elm St, Merrimack, NH worth?

The TopHap Estimate for 21 Elm St, Merrimack, NH is $332,819 as of Aug 30, 2026. The likely range is $321,021 to $344,617. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Elm St, Merrimack, NH last sell?

21 Elm St, Merrimack, NH last sold on Nov 22, 2002 for $152,500, according to the county's recorded deed.

How big is 21 Elm St, Merrimack, NH?

21 Elm St, Merrimack, NH has 2 bedrooms, 1.5 bathrooms and 1,368 square feet of living space.

When was 21 Elm St, Merrimack, NH built?

21 Elm St, Merrimack, NH was built in 1981, making it 45 years old. The building has 2 stories.

What schools serve 21 Elm St, Merrimack, NH?

21 Elm St, Merrimack, NH is assigned to Reeds Ferry School (elementary), rated A+; Merrimack High School (high), rated C; Merrimack Middle School (middle), rated C+. All sit in Merrimack School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Elm St, Merrimack, NH compare to other homes in Merrimack 03054?

Among the 9,896 homes in Merrimack 03054, it is worth more than 6% of them ($332,819 against a typical $549,602), its price per square foot is higher than 31% of them ($243 against a typical $263), it is bigger than 15% of them (1,368 ft² against a typical 2,012 ft²) and it is newer than 44% of them (1981 against a typical 1984). Measured against all of Hillsborough County, it is worth more than 10% 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 21 Elm St, Merrimack, NH?

The 2025 property tax bill for 21 Elm St, Merrimack, NH was $4,064. The county assessed it at $183,800.

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Assigned schools

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