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Single Family ResidenceResidential
$1,111,323$296 / 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 95How 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 $900,000 on May 7, 2021

18 MALLARD LN

SANDOWN, NH 03873
5
Beds
3.5
Baths
3,756 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.
2.24 ac
Lot SizeThe size of the land the home sits on, from county records.
2006
Year BuiltThe year the home was originally built, according to county records.
3
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

$1.1M
$1.1M low$1.2M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$900,000 · May 7, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$18,122 (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.$1,018,100 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$175,200
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$842,900
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$856,900

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.9 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.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
CountyROCKINGHAM
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.2011
Lot (acres)The size of the land the home sits on, from county records.2.24
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
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(4)

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
Sandown North Elementary SchoolB
Elementary · Grades 1–5 · 1.0 mi
H
Timberlane Regional High SchoolC-
High · Grades 9–12 · 8.0 mi
M
Timberlane Regional Middle SchoolC
Middle · Grades 6–8 · 8.0 mi

District: Timberlane Regional School District

Neighborhood · ZIP 03873These 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.71
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.95
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.96

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.16%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.9.8%
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.6,844
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.473 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$130,004
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$135,215
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

18 Mallard Ln 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 Sandown 03873
  • Costs less per square foot than 78% of homes in Sandown 03873
  • Among the largest homes in Sandown 03873
  • Has a bigger lot than 81% of homes in Rockingham County
  • Newer than 85% of homes in Rockingham County

What homes are worth in Sandown 03873

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

This home
$336K$926K

This home is worth more than almost all homes in Sandown 03873.

How it measures up in Sandown 03873

The dot is this home. The mark in the middle is the typical home in Sandown 03873.

Estimated value$1,111,323
CheaperTypical $586,165Pricier

Pricier than almost all homes nearby

Price per ft²$296
CheaperTypical $338Pricier

Pricier than 22% of homes nearby

Living area3,756 ft²
SmallerTypical 1,676 ft²Bigger

Bigger than almost all homes nearby

Lot size2.24 ac
SmallerTypical 1.39 acBigger

Bigger than 75% of homes nearby

Year built2006
OlderTypical 1988Newer

Newer than 83% of homes nearby

How 18 Mallard Ln ranks against every home in each area.
MeasureThis homeSandown 03873Rockingham County
Estimated valuepricier than$1,111,323almost all homes91% of homes
Price per ft²pricier than$29622% of homes28% of homes
Living areabigger than3,756 ft²almost all homes95% of homes
Lot sizebigger than2.24 ac75% of homes81% of homes
Year builtnewer than200683% of homes85% of homes

About 18 Mallard Ln

How much is 18 Mallard Ln, Sandown, NH worth?

The TopHap Estimate for 18 Mallard Ln, Sandown, NH is $1,111,323 as of Oct 21, 2026. The likely range is $1,051,137 to $1,171,509. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 18 Mallard Ln, Sandown, NH last sell?

18 Mallard Ln, Sandown, NH last sold on May 7, 2021 for $900,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 18 Mallard Ln, Sandown, NH?

18 Mallard Ln, Sandown, NH has 5 bedrooms, 3.5 bathrooms, 3,756 square feet of living space and a 2.24-acre lot.

When was 18 Mallard Ln, Sandown, NH built?

18 Mallard Ln, Sandown, NH was built in 2006, making it 20 years old. It is a colonial home. The building has 3 stories.

What schools serve 18 Mallard Ln, Sandown, NH?

18 Mallard Ln, Sandown, NH is assigned to Sandown North Elementary School (elementary), rated B; Timberlane Regional High School (high), rated C-; Timberlane Regional Middle School (middle), rated C. All sit in Timberlane Regional School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 18 Mallard Ln, Sandown, NH compare to other homes in Sandown 03873?

Among the 2,435 homes in Sandown 03873, it is worth more than almost all of them ($1,111,323 against a typical $586,165), its price per square foot is higher than 22% of them ($296 against a typical $338), it is bigger than almost all of them (3,756 ft² against a typical 1,676 ft²), its lot is bigger than 75% of them (2.24 ac against a typical 1.39 ac) and it is newer than 83% of them (2006 against a typical 1988). Measured against all of Rockingham County, it is worth more than 91% 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 18 Mallard Ln, Sandown, NH?

The 2025 property tax bill for 18 Mallard Ln, Sandown, NH was $18,122. The county assessed it at $1,018,100.

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