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Single Family ResidenceResidential
$518,553$477 / 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 93How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026
Last sold for $437,580 on Aug 8, 2023

51 UNDINE RD

ROCKY POINT, NY 11778
3
Beds
2
Baths
1,088 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.
0.18 ac
Lot SizeThe size of the land the home sits on, from county records.
1930
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

$519K
$481K low$557K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$437,580 · Aug 8, 2023

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$10,338 (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.$2,240 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$200
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$2,040
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$466,667

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountySUFFOLK
Lot (acres)The size of the land the home sits on, from county records.0.18
HeatingThe type of heating system in the home.Radiant
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

Transaction History(8)

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.

M
Rocky Point Middle SchoolD-
Middle · Grades 6–8 · 2.0 mi
H
Rocky Point High SchoolA
High · Grades 9–12 · 2.0 mi
E
Frank J. Carasiti Elementary School
Elementary · Grades KG–2 · 2.1 mi

District: Rocky Point Union Free School District

Neighborhood · ZIP 11778These 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.81
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.108
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.60

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.21%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.6%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.2%
PopulationHow many people live in this area.12,882
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,613 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$108,349
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$141,180
Average tempThe average temperature here across a full year.52°F
Annual precipHow much rain and melted snow falls here in a typical year.48 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

51 Undine 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 less than 88% of homes in Suffolk County
  • Costs more per square foot than 79% of homes in Rocky Point 11778
  • Smaller than 84% of homes in Suffolk County
  • Has a smaller lot than 75% of homes in Suffolk County
  • Older than 95% of homes in Suffolk County

What homes are worth in Rocky Point 11778

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

This home
$347K$1.1M

This home is worth more than 46% of homes in Rocky Point 11778.

How it measures up in Rocky Point 11778

The dot is this home. The mark in the middle is the typical home in Rocky Point 11778.

Estimated value$518,553
CheaperTypical $530,708Pricier

Pricier than 46% of homes nearby

Price per ft²$477
CheaperTypical $377Pricier

Pricier than 79% of homes nearby

Living area1,088 ft²
SmallerTypical 1,395 ft²Bigger

Bigger than 31% of homes nearby

Lot size0.18 ac
SmallerTypical 0.23 acBigger

Bigger than 33% of homes nearby

Year built1930
OlderTypical 1962Newer

Newer than 9% of homes nearby

How 51 Undine Rd ranks against every home in each area.
MeasureThis homeRocky Point 11778Suffolk County
Estimated valuepricier than$518,55346% of homes12% of homes
Price per ft²pricier than$47779% of homes67% of homes
Living areabigger than1,088 ft²31% of homes16% of homes
Lot sizebigger than0.18 ac33% of homes25% of homes
Year builtnewer than19309% of homes5% of homes

About 51 Undine Rd

How much is 51 Undine Rd, Rocky Point, NY worth?

The TopHap Estimate for 51 Undine Rd, Rocky Point, NY is $518,553 as of Jul 14, 2026. The likely range is $480,541 to $556,565. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 51 Undine Rd, Rocky Point, NY last sell?

51 Undine Rd, Rocky Point, NY last sold on Aug 8, 2023 for $437,580, according to the county's recorded deed. TopHap holds 5 recorded sales for this parcel.

How big is 51 Undine Rd, Rocky Point, NY?

51 Undine Rd, Rocky Point, NY has 3 bedrooms, 2 bathrooms, 1,088 square feet of living space and a 0.18-acre lot.

When was 51 Undine Rd, Rocky Point, NY built?

51 Undine Rd, Rocky Point, NY was built in 1930, making it 96 years old. The building has 1 story.

What schools serve 51 Undine Rd, Rocky Point, NY?

51 Undine Rd, Rocky Point, NY is assigned to Rocky Point Middle School (middle), rated D-; Rocky Point High School (high), rated A; Frank J. Carasiti Elementary School (elementary). All sit in Rocky Point Union Free School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 51 Undine Rd, Rocky Point, NY compare to other homes in Rocky Point 11778?

Among the 4,920 homes in Rocky Point 11778, it is worth more than 46% of them ($518,553 against a typical $530,708), its price per square foot is higher than 79% of them ($477 against a typical $377), it is bigger than 31% of them (1,088 ft² against a typical 1,395 ft²), its lot is bigger than 33% of them (0.18 ac against a typical 0.23 ac) and it is newer than 9% of them (1930 against a typical 1962). Measured against all of Suffolk County, it is worth more than 12% 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 51 Undine Rd, Rocky Point, NY?

The 2024 property tax bill for 51 Undine Rd, Rocky Point, NY was $10,338. The county assessed it at $2,240.

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