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Single Family ResidenceResidential
$328,509$239 / 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

21 LAKE SHORE DR W

ROCK HILL, NY 12775
3
Beds
2
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.
0.31 ac
Lot SizeThe size of the land the home sits on, from county records.
1975
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$329K
$300K low$357K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$10,607 (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.$156,500 (2024)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$35,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$121,500
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$156,500
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$347,778

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
CountySullivan
Lot (acres)The size of the land the home sits on, from county records.0.30
HeatingThe type of heating system in the home.Electric
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Basement
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Patio · 1,161 ft²Porch · 744 ft²

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.

E
Emma C Chase SchoolC
Elementary · Grades KG–5 · 5.8 mi
M
Robert J Kaiser Middle SchoolD+
Middle · Grades 6–8 · 6.4 mi
H
Monticello High SchoolD+
High · Grades 9–12 · 6.5 mi

District: Monticello Central School District

Neighborhood · ZIP 12775These 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.99
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.66%
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.4.3%
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.2,382
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.168 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$111,553
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$154,086
Average tempThe average temperature here across a full year.47°F
Annual precipHow much rain and melted snow falls here in a typical year.49 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 Lake Shore Dr W 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 73% of homes in Rock Hill 12775
  • Smaller than 66% of homes in Rock Hill 12775
  • Has a smaller lot than 71% of homes in Sullivan County

What homes are worth in Rock Hill 12775

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

This home
$164K$860K

This home is worth more than 27% of homes in Rock Hill 12775.

How it measures up in Rock Hill 12775

The dot is this home. The mark in the middle is the typical home in Rock Hill 12775.

Estimated value$328,509
CheaperTypical $421,965Pricier

Pricier than 27% of homes nearby

Price per ft²$239
CheaperTypical $226Pricier

Pricier than 59% of homes nearby

Living area1,372 ft²
SmallerTypical 1,660 ft²Bigger

Bigger than 34% of homes nearby

Lot size0.31 ac
SmallerTypical 0.33 acBigger

Bigger than 45% of homes nearby

Year built1975
OlderTypical 1973Newer

Newer than 54% of homes nearby

How 21 Lake Shore Dr W ranks against every home in each area.
MeasureThis homeRock Hill 12775Sullivan County
Estimated valuepricier than$328,50927% of homes49% of homes
Price per ft²pricier than$23959% of homes64% of homes
Living areabigger than1,372 ft²34% of homes42% of homes
Lot sizebigger than0.31 ac45% of homes29% of homes
Year builtnewer than197554% of homes55% of homes

About 21 Lake Shore Dr W

How much is 21 Lake Shore Dr W, Rock Hill, NY worth?

The TopHap Estimate for 21 Lake Shore Dr W, Rock Hill, NY is $328,509 as of Sep 24, 2026. The likely range is $299,721 to $357,297. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Lake Shore Dr W, Rock Hill, NY last sell?

21 Lake Shore Dr W, Rock Hill, NY last sold on Dec 23, 2025, according to the county's recorded deed.

How big is 21 Lake Shore Dr W, Rock Hill, NY?

21 Lake Shore Dr W, Rock Hill, NY has 3 bedrooms, 2 bathrooms, 1,372 square feet of living space and a 0.30-acre lot.

When was 21 Lake Shore Dr W, Rock Hill, NY built?

21 Lake Shore Dr W, Rock Hill, NY was built in 1975, making it 51 years old. It is a ranch home. The building has 1 story.

What schools serve 21 Lake Shore Dr W, Rock Hill, NY?

21 Lake Shore Dr W, Rock Hill, NY is assigned to Emma C Chase School (elementary), rated C; Robert J Kaiser Middle School (middle), rated D+; Monticello High School (high), rated D+. All sit in Monticello Central School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Lake Shore Dr W, Rock Hill, NY compare to other homes in Rock Hill 12775?

Among the 1,777 homes in Rock Hill 12775, it is worth more than 27% of them ($328,509 against a typical $421,965), its price per square foot is higher than 59% of them ($239 against a typical $226), it is bigger than 34% of them (1,372 ft² against a typical 1,660 ft²), its lot is bigger than 45% of them (0.31 ac against a typical 0.33 ac) and it is newer than 54% of them (1975 against a typical 1973). Measured against all of Sullivan County, it is worth more than 49% 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 Lake Shore Dr W, Rock Hill, NY?

The 2024 property tax bill for 21 Lake Shore Dr W, Rock Hill, NY was $10,607. The county assessed it at $156,500.

More homes on Lake Shore Dr W

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More homes in Rock Hill 12775

Assigned schools

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