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CondominiumResidential
$350,489$295 / 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 88How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026
Last sold for $230,000 on Apr 9, 2021

491 MAMMOTH RD

LONDONDERRY, NH 03053
Building report
2
Beds
2
Baths
1,190 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.
850 ft²
Lot SizeThe size of the land the home sits on, from county records.
1991
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
4
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$350K
$308K low$393K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$230,000 · Apr 9, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,990 (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.$247,200 (2025)
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$247,200
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$305,615

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Condominium
StyleThe architectural style of the home, such as ranch or colonial.Condo/Apartment
CountyROCKINGHAM
Lot (acres)The size of the land the home sits on, from county records.0.02
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.Forced Air With Air Conditioning
CoolingThe type of cooling or air conditioning in the home.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No

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
North Elementary School
Elementary · Grades 1–5 · 0.4 mi
M
Londonderry Middle SchoolB-
Middle · Grades 6–8 · 2.8 mi
H
Londonderry High SchoolB
High · Grades 9–12 · 3.1 mi

District: Londonderry School District

Neighborhood · ZIP 03053These 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.9
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.93
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.89

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.31%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.1.6%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.26,296
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.649 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$123,095
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$143,902
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

491 Mammoth 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 93% of homes in Rockingham County
  • Costs less per square foot than 72% of homes in Rockingham County
  • Smaller than 77% of homes in Londonderry 03053
  • Among the smallest lots in Rockingham County
  • Newer than 67% of homes in Londonderry 03053

What homes are worth in Londonderry 03053

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

This home
$231K$943K

This home is worth more than 15% of homes in Londonderry 03053.

How it measures up in Londonderry 03053

The dot is this home. The mark in the middle is the typical home in Londonderry 03053.

Estimated value$350,489
CheaperTypical $566,356Pricier

Pricier than 15% of homes nearby

Price per ft²$295
CheaperTypical $313Pricier

Pricier than 37% of homes nearby

Living area1,190 ft²
SmallerTypical 1,785 ft²Bigger

Bigger than 23% of homes nearby

Lot size850 ft²
SmallerTypical 1 acBigger

Bigger than 15% of homes nearby

Year built1991
OlderTypical 1985Newer

Newer than 67% of homes nearby

How 491 Mammoth Rd ranks against every home in each area.
MeasureThis homeLondonderry 03053Rockingham County
Estimated valuepricier than$350,48915% of homes7% of homes
Price per ft²pricier than$29537% of homes28% of homes
Living areabigger than1,190 ft²23% of homes23% of homes
Lot sizebigger than850 ft²15% of homesalmost no homes
Year builtnewer than199167% of homes64% of homes

About 491 Mammoth Rd

How much is 491 Mammoth Rd, Londonderry, NH worth?

The TopHap Estimate for 491 Mammoth Rd, Londonderry, NH is $350,489 as of Oct 21, 2026. The likely range is $308,313 to $392,665. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 491 Mammoth Rd, Londonderry, NH last sell?

491 Mammoth Rd, Londonderry, NH last sold on Apr 9, 2021 for $230,000, according to the county's recorded deed.

How big is 491 Mammoth Rd, Londonderry, NH?

491 Mammoth Rd, Londonderry, NH has 2 bedrooms, 2 bathrooms, 1,190 square feet of living space and a 0.02-acre lot.

When was 491 Mammoth Rd, Londonderry, NH built?

491 Mammoth Rd, Londonderry, NH was built in 1991, making it 35 years old. It is a condo/apartment home. The building has 1 story.

What schools serve 491 Mammoth Rd, Londonderry, NH?

491 Mammoth Rd, Londonderry, NH is assigned to North Elementary School (elementary); Londonderry Middle School (middle), rated B-; Londonderry High School (high), rated B. All sit in Londonderry School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 491 Mammoth Rd, Londonderry, NH compare to other homes in Londonderry 03053?

Among the 9,228 homes in Londonderry 03053, it is worth more than 15% of them ($350,489 against a typical $566,356), its price per square foot is higher than 37% of them ($295 against a typical $313), it is bigger than 23% of them (1,190 ft² against a typical 1,785 ft²), its lot is bigger than 15% of them (850 ft² against a typical 1 ac) and it is newer than 67% of them (1991 against a typical 1985). Measured against all of Rockingham County, it is worth more than 7% 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 491 Mammoth Rd, Londonderry, NH?

The 2025 property tax bill for 491 Mammoth Rd, Londonderry, NH was $3,990. The county assessed it at $247,200.

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