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Single Family ResidenceResidential
$4,418,082$3,220 / 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 86How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026

21 ROCKY POINT RD

SHELTER ISLAND, NY 11964
3
Beds
2.5
Baths
1,372 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.
0.73 ac
Lot SizeThe size of the land the home sits on, from county records.
1958
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

$4.4M
$3.8M low$5M high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$13,811 (2023)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$3,235,000 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$1,406,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$1,829,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$3,235,000

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.94%
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.1 percent flood zone

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.Contemporary
CountySUFFOLK
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.2000
Lot (acres)The size of the land the home sits on, from county records.0.73
HeatingThe type of heating system in the home.Yes
CoolingThe type of cooling or air conditioning in the home.Central
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No
ViewThe type of view from the property, or another feature of the site that affects value.Waterfront
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Patio · 40 ft²Porch · 261 ft²

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

E
Shelter Island SchoolB-
Elementary · Grades PK–12 · 2.4 mi

District: Shelter Island Union Free School District

Neighborhood · ZIP 11964These 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.179
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.105
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.49

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.59%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.32%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.0%
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.1,414
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.146 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$104,434
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$149,779
Average tempThe average temperature here across a full year.51°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.58%

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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

21 Rocky Point 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 more than 98% of homes in Suffolk County
  • Among the highest price per square foot in Shelter Island 11964
  • Smaller than 90% of homes in Shelter Island Heights
  • Has a bigger lot than 84% of homes in Suffolk County
  • Older than 72% of homes in Suffolk County

What homes are worth in Shelter Island 11964

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

This home
$940K$9.7M

This home is worth more than 86% of homes in Shelter Island 11964.

How it measures up in Shelter Island 11964

The dot is this home. The mark in the middle is the typical home in Shelter Island 11964.

Estimated value$4,418,082
CheaperTypical $2,059,848Pricier

Pricier than 86% of homes nearby

Price per ft²$3220
CheaperTypical $1011Pricier

Pricier than almost all homes nearby

Living area1,372 ft²
SmallerTypical 2,145 ft²Bigger

Bigger than 15% of homes nearby

Lot size0.73 ac
SmallerTypical 0.92 acBigger

Bigger than 36% of homes nearby

Year built1958
OlderTypical 1975Newer

Newer than 32% of homes nearby

How 21 Rocky Point Rd ranks against every home in each area.
MeasureThis homeShelter Island HeightsShelter Island 11964Suffolk County
Estimated valuepricier than$4,418,08281% of homes86% of homes98% of homes
Price per ft²pricier than$3220almost all homesalmost all homesalmost all homes
Living areabigger than1,372 ft²10% of homes15% of homes32% of homes
Lot sizebigger than0.73 ac36% of homes36% of homes84% of homes
Year builtnewer than195831% of homes32% of homes28% of homes

About 21 Rocky Point Rd

How much is 21 Rocky Point Rd, Shelter Island, NY worth?

The TopHap Estimate for 21 Rocky Point Rd, Shelter Island, NY is $4,418,082 as of Aug 30, 2026. The likely range is $3,806,934 to $5,029,230. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Rocky Point Rd, Shelter Island, NY last sell?

21 Rocky Point Rd, Shelter Island, NY last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 21 Rocky Point Rd, Shelter Island, NY?

21 Rocky Point Rd, Shelter Island, NY has 3 bedrooms, 2.5 bathrooms, 1,372 square feet of living space and a 0.73-acre lot.

When was 21 Rocky Point Rd, Shelter Island, NY built?

21 Rocky Point Rd, Shelter Island, NY was built in 1958, making it 68 years old. It is a contemporary home. The building has 1 story.

What schools serve 21 Rocky Point Rd, Shelter Island, NY?

21 Rocky Point Rd, Shelter Island, NY is assigned to Shelter Island School (elementary), rated B-. All sit in Shelter Island Union Free School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Rocky Point Rd, Shelter Island, NY compare to other homes in Shelter Island 11964?

Among the 2,590 homes in Shelter Island 11964, it is worth more than 86% of them ($4,418,082 against a typical $2,059,848), its price per square foot is higher than almost all of them ($3220 against a typical $1011), it is bigger than 15% of them (1,372 ft² against a typical 2,145 ft²), its lot is bigger than 36% of them (0.73 ac against a typical 0.92 ac) and it is newer than 32% of them (1958 against a typical 1975). Measured against all of Suffolk County, it is worth more than 98% 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 21 Rocky Point Rd, Shelter Island, NY?

The 2023 property tax bill for 21 Rocky Point Rd, Shelter Island, NY was $13,811. The county assessed it at $3,235,000.

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