Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$295,182$212 / 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 85How 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

521 MAIN ST

SOUTH LONDONDERRY, VT 05155
4
Beds
2
Baths
1,390 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.
0.75 ac
Lot SizeThe size of the land the home sits on, from county records.
1880
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
9
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$295K
$252K low$339K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,268 (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.$197,700 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$33,800
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$163,900
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$197,700

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.46
56
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
8
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
49
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
98
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
23
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.56 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
CountyWINDHAM
Lot (acres)The size of the land the home sits on, from county records.0.75
RoofThe main material covering the roof, such as asphalt shingle or tile.Shingle
HeatingThe type of heating system in the home.Steam
PoolWhether the property has a pool, and what kind, such as in-ground.No
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck

Neighborhood · ZIP 05155These 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.154
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.78
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.65

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.58%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.19%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.2%
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.975
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.41 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$71,132
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$98,119
Average tempThe average temperature here across a full year.42°F
Annual precipHow much rain and melted snow falls here in a typical year.46 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.49%

Owner Tools

Do you own this home?
Claim this home

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

521 Main 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 82% of homes in South Londonderry 05155
  • Costs less per square foot than 78% of homes in South Londonderry 05155
  • Smaller than 67% of homes in South Londonderry 05155
  • Has a smaller lot than 87% of homes in South Londonderry 05155
  • Older than 91% of homes in South Londonderry 05155

What homes are worth in South Londonderry 05155

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

This home
$203K$1.9M

This home is worth more than 18% of homes in South Londonderry 05155.

How it measures up in South Londonderry 05155

The dot is this home. The mark in the middle is the typical home in South Londonderry 05155.

Estimated value$295,182
CheaperTypical $454,760Pricier

Pricier than 18% of homes nearby

Price per ft²$212
CheaperTypical $271Pricier

Pricier than 22% of homes nearby

Living area1,390 ft²
SmallerTypical 1,647 ft²Bigger

Bigger than 33% of homes nearby

Lot size0.75 ac
SmallerTypical 3.5 acBigger

Bigger than 13% of homes nearby

Year built1880
OlderTypical 1981Newer

Newer than 9% of homes nearby

How 521 Main St ranks against every home in each area.
MeasureThis homeSouth Londonderry 05155Windham County
Estimated valuepricier than$295,18218% of homes30% of homes
Price per ft²pricier than$21222% of homes30% of homes
Living areabigger than1,390 ft²33% of homes40% of homes
Lot sizebigger than0.75 ac13% of homes29% of homes
Year builtnewer than18809% of homes10% of homes

About 521 Main St

How much is 521 Main St, South Londonderry, VT worth?

The TopHap Estimate for 521 Main St, South Londonderry, VT is $295,182 as of Sep 24, 2026. The likely range is $251,723 to $338,641. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 521 Main St, South Londonderry, VT last sell?

521 Main St, South Londonderry, VT last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 521 Main St, South Londonderry, VT?

521 Main St, South Londonderry, VT has 4 bedrooms, 2 bathrooms, 1,390 square feet of living space and a 0.75-acre lot.

When was 521 Main St, South Londonderry, VT built?

521 Main St, South Londonderry, VT was built in 1880, making it 146 years old. It is a colonial home. The building has 2 stories.

How does 521 Main St, South Londonderry, VT compare to other homes in South Londonderry 05155?

Among the 437 homes in South Londonderry 05155, it is worth more than 18% of them ($295,182 against a typical $454,760), its price per square foot is higher than 22% of them ($212 against a typical $271), it is bigger than 33% of them (1,390 ft² against a typical 1,647 ft²), its lot is bigger than 13% of them (0.75 ac against a typical 3.5 ac) and it is newer than 9% of them (1880 against a typical 1981). Measured against all of Windham County, it is worth more than 30% 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 521 Main St, South Londonderry, VT?

The 2025 property tax bill for 521 Main St, South Londonderry, VT was $3,268. The county assessed it at $197,700.

More homes on Main St

Closest homes

More homes in South Londonderry 05155

Explore the area

See this home in context

Open 521 Main St on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map