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Single Family ResidenceResidential
$433,347$250 / 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 91How 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

57 RIVERLAKE ST

ALTON BAY, NH 03810
3
Beds
2.5
Baths
1,736 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.
0.16 ac
Lot SizeThe size of the land the home sits on, from county records.
1957
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
6
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$433K
$394K low$473K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,264 (2024)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$328,500 (2024)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$196,100
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$132,400

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.197 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.Ranch
CountyBELKNAP
Lot (acres)The size of the land the home sits on, from county records.0.16
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
FireplaceWhether the home has a fireplace, and what kind.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.No Garage
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.Boat access

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

E
Alton Central School (Elementary)D
Elementary · Grades PK–8 · 1.1 mi
H
Prospect Mountain High School
High · Grades 9–12 · 2.2 mi

District: Prospect Mountain High School Joint Maintenance Agreement District

Neighborhood · ZIP 03810These 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.115
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.81
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.119

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.51%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.28%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.5%
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.2,439
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.68 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$110,264
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$143,759
Average tempThe average temperature here across a full year.43°F
Annual precipHow much rain and melted snow falls here in a typical year.47 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

57 Riverlake 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 86% of homes in Alton Bay 03810
  • Costs less per square foot than 90% of homes in Alton Bay 03810
  • Has a smaller lot than 94% of homes in Alton Bay 03810
  • Older than 76% of homes in Belknap County

What homes are worth in Alton Bay 03810

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

This home
$263K$3.5M

This home is worth more than 14% of homes in Alton Bay 03810.

How it measures up in Alton Bay 03810

The dot is this home. The mark in the middle is the typical home in Alton Bay 03810.

Estimated value$433,347
CheaperTypical $761,170Pricier

Pricier than 14% of homes nearby

Price per ft²$250
CheaperTypical $492Pricier

Pricier than 10% of homes nearby

Living area1,736 ft²
SmallerTypical 1,614 ft²Bigger

Bigger than 56% of homes nearby

Lot size0.16 ac
SmallerTypical 0.64 acBigger

Bigger than 6% of homes nearby

Year built1957
OlderTypical 1980Newer

Newer than 25% of homes nearby

How 57 Riverlake St ranks against every home in each area.
MeasureThis homeAlton Bay 03810Belknap County
Estimated valuepricier than$433,34714% of homes32% of homes
Price per ft²pricier than$25010% of homes20% of homes
Living areabigger than1,736 ft²56% of homes60% of homes
Lot sizebigger than0.16 ac6% of homes7% of homes
Year builtnewer than195725% of homes24% of homes

About 57 Riverlake St

How much is 57 Riverlake St, Alton Bay, NH worth?

The TopHap Estimate for 57 Riverlake St, Alton Bay, NH is $433,347 as of Sep 24, 2026. The likely range is $394,128 to $472,566. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 57 Riverlake St, Alton Bay, NH last sell?

57 Riverlake St, Alton Bay, NH last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 57 Riverlake St, Alton Bay, NH?

57 Riverlake St, Alton Bay, NH has 3 bedrooms, 2.5 bathrooms, 1,736 square feet of living space and a 0.16-acre lot.

When was 57 Riverlake St, Alton Bay, NH built?

57 Riverlake St, Alton Bay, NH was built in 1957, making it 69 years old. It is a ranch home. The building has 1 story.

What schools serve 57 Riverlake St, Alton Bay, NH?

57 Riverlake St, Alton Bay, NH is assigned to Alton Central School (Elementary) (elementary), rated D; Prospect Mountain High School (high). All sit in Prospect Mountain High School Joint Maintenance Agreement District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 57 Riverlake St, Alton Bay, NH compare to other homes in Alton Bay 03810?

Among the 2,263 homes in Alton Bay 03810, it is worth more than 14% of them ($433,347 against a typical $761,170), its price per square foot is higher than 10% of them ($250 against a typical $492), it is bigger than 56% of them (1,736 ft² against a typical 1,614 ft²), its lot is bigger than 6% of them (0.16 ac against a typical 0.64 ac) and it is newer than 25% of them (1957 against a typical 1980). Measured against all of Belknap County, it is worth more than 32% 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 57 Riverlake St, Alton Bay, NH?

The 2024 property tax bill for 57 Riverlake St, Alton Bay, NH was $4,264. The county assessed it at $328,500.

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