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Single Family ResidenceResidential
$173,899$219 / 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 92How 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

523 UNION ST

LITTLETON, NH 03561
2
Beds
1
Baths
795 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.
0.11 ac
Lot SizeThe size of the land the home sits on, from county records.
1870
Year BuiltThe year the home was originally built, according to county records.
1
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

$174K
$159K low$188K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,099 (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.$148,900 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$17,900
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$131,000
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$75,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$253,935

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.40
62
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
5
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
50
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.
3
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.27 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%

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.Cape Cod
CountyGRAFTON
Lot (acres)The size of the land the home sits on, from county records.0.11
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

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Mildred C. Lakeway SchoolC+
Elementary · Grades KG–6 · 0.4 mi
M
Daisy Bronson Junior High SchoolC-
Middle · Grades 7–8 · 1.0 mi
H
Littleton High SchoolB-
High · Grades 9–12 · 1.1 mi

District: Littleton School District

Neighborhood · ZIP 03561These 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.103
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.83
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.92%
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.19%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.6%
PopulationHow many people live in this area.6,101
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.112 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$51,733
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$93,758
Average tempThe average temperature here across a full year.42°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.33%

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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

523 Union 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 98% of homes in Littleton 03561
  • Costs less per square foot than 75% of homes in Grafton County
  • Smaller than 93% of homes in Littleton 03561
  • Has a smaller lot than 94% of homes in Grafton County
  • Older than 94% of homes in Littleton 03561

What homes are worth in Littleton 03561

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

This home
$177K$851K

This home is worth more than 2% of homes in Littleton 03561.

How it measures up in Littleton 03561

The dot is this home. The mark in the middle is the typical home in Littleton 03561.

Estimated value$173,899
CheaperTypical $352,119Pricier

Pricier than 2% of homes nearby

Price per ft²$219
CheaperTypical $250Pricier

Pricier than 34% of homes nearby

Living area795 ft²
SmallerTypical 1,430 ft²Bigger

Bigger than 7% of homes nearby

Lot size0.11 ac
SmallerTypical 0.61 acBigger

Bigger than 9% of homes nearby

Year built1870
OlderTypical 1970Newer

Newer than 6% of homes nearby

How 523 Union St ranks against every home in each area.
MeasureThis homeLittleton 03561Grafton County
Estimated valuepricier than$173,8992% of homes3% of homes
Price per ft²pricier than$21934% of homes25% of homes
Living areabigger than795 ft²7% of homes12% of homes
Lot sizebigger than0.11 ac9% of homes6% of homes
Year builtnewer than18706% of homes6% of homes

About 523 Union St

How much is 523 Union St, Littleton, NH worth?

The TopHap Estimate for 523 Union St, Littleton, NH is $173,899 as of Sep 24, 2026. The likely range is $159,412 to $188,386. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 523 Union St, Littleton, NH last sell?

523 Union St, Littleton, NH last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 523 Union St, Littleton, NH?

523 Union St, Littleton, NH has 2 bedrooms, 1 bathrooms, 795 square feet of living space and a 0.11-acre lot.

When was 523 Union St, Littleton, NH built?

523 Union St, Littleton, NH was built in 1870, making it 156 years old. It is a cape cod home. The building has 1 story.

What schools serve 523 Union St, Littleton, NH?

523 Union St, Littleton, NH is assigned to Mildred C. Lakeway School (elementary), rated C+; Daisy Bronson Junior High School (middle), rated C-; Littleton High School (high), rated B-. All sit in Littleton School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 523 Union St, Littleton, NH compare to other homes in Littleton 03561?

Among the 2,249 homes in Littleton 03561, it is worth more than 2% of them ($173,899 against a typical $352,119), its price per square foot is higher than 34% of them ($219 against a typical $250), it is bigger than 7% of them (795 ft² against a typical 1,430 ft²), its lot is bigger than 9% of them (0.11 ac against a typical 0.61 ac) and it is newer than 6% of them (1870 against a typical 1970). Measured against all of Grafton County, it is worth more than 3% 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 523 Union St, Littleton, NH?

The 2025 property tax bill for 523 Union St, Littleton, NH was $2,099. The county assessed it at $148,900.

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