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Single Family ResidenceResidential
$354,710$377 / 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 88How 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

18 UNDINE RD

ROCKY POINT, NY 11778
2
Beds
1
Baths
940 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.
0.23 ac
Lot SizeThe size of the land the home sits on, from county records.
1938
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

$355K
$313K low$396K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,903 (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.$1,050 (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.$850
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$218,750

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.0.23
HeatingThe type of heating system in the home.Radiant
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

Transaction History(2)

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 · 1.9 mi
H
Rocky Point High SchoolA
High · Grades 9–12 · 1.9 mi
E
Frank J. Carasiti Elementary School
Elementary · Grades KG–2 · 2.0 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

18 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 98% of homes in Rocky Point 11778
  • Smaller than 92% of homes in Suffolk County
  • Older than 93% 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
$353K$1.2M

This home is worth more than 2% 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$354,710
CheaperTypical $532,351Pricier

Pricier than 2% of homes nearby

Price per ft²$377
CheaperTypical $377Pricier

Pricier than 50% of homes nearby

Living area940 ft²
SmallerTypical 1,386 ft²Bigger

Bigger than 19% of homes nearby

Lot size0.23 ac
SmallerTypical 0.23 acBigger

Bigger than 57% of homes nearby

Year built1938
OlderTypical 1962Newer

Newer than 16% of homes nearby

How 18 Undine Rd ranks against every home in each area.
MeasureThis homeRocky Point 11778Suffolk County
Estimated valuepricier than$354,7102% of homes2% of homes
Price per ft²pricier than$37750% of homes37% of homes
Living areabigger than940 ft²19% of homes8% of homes
Lot sizebigger than0.23 ac57% of homes38% of homes
Year builtnewer than193816% of homes7% of homes

About 18 Undine Rd

How much is 18 Undine Rd, Rocky Point, NY worth?

The TopHap Estimate for 18 Undine Rd, Rocky Point, NY is $354,710 as of Jul 14, 2026. The likely range is $313,168 to $396,252. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 18 Undine Rd, Rocky Point, NY last sell?

18 Undine Rd, Rocky Point, NY last sold on Sep 25, 2009, according to the county's recorded deed.

How big is 18 Undine Rd, Rocky Point, NY?

18 Undine Rd, Rocky Point, NY has 2 bedrooms, 1 bathrooms, 940 square feet of living space and a 0.23-acre lot.

When was 18 Undine Rd, Rocky Point, NY built?

18 Undine Rd, Rocky Point, NY was built in 1938, making it 88 years old. The building has 1 story.

What schools serve 18 Undine Rd, Rocky Point, NY?

18 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 18 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 2% of them ($354,710 against a typical $532,351), its price per square foot is higher than 50% of them ($377 against a typical $377), it is bigger than 19% of them (940 ft² against a typical 1,386 ft²), its lot is bigger than 57% of them (0.23 ac against a typical 0.23 ac) and it is newer than 16% of them (1938 against a typical 1962). Measured against all of Suffolk County, it is worth more than 2% 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 18 Undine Rd, Rocky Point, NY?

The 2024 property tax bill for 18 Undine Rd, Rocky Point, NY was $3,903. The county assessed it at $1,050.

More homes on Undine Rd

Closest homes

More homes in Rocky Point 11778

Assigned schools

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