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Single Family ResidenceResidential
$665,004$195 / 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 92How 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
Last sold for $146,280 on Jul 18, 1997

21 ROBERTS RD W

SHIRLEY, NY 11967
4
Beds
3
Baths
3,414 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.
0.37 ac
Lot SizeThe size of the land the home sits on, from county records.
1991
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
10
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$665K
$613K low$717K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$146,280 · Jul 18, 1997

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$9,943 (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.$2,560 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$210
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$2,350
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$533,333

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.0.37
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

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

E
William Floyd Elementary SchoolC+
Elementary · Grades KG–5 · 1.0 mi
H
William Floyd High SchoolD+
High · Grades 9–12 · 1.6 mi
M
William Floyd Middle SchoolC
Middle · Grades 6–8 · 3.2 mi

District: William Floyd Union Free School District

Neighborhood · ZIP 11967These 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.84
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 100.57

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.94%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.13%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.9%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.25,626
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,978 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$116,755
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$159,264
Average tempThe average temperature here across a full year.52°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 Roberts Rd 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 more than 93% of homes in Shirley 11967
  • Among the lowest price per square foot in Shirley 11967
  • Among the largest homes in Shirley 11967
  • Has a bigger lot than 66% of homes in Shirley 11967
  • Newer than 83% of homes in Shirley 11967

What homes are worth in Shirley 11967

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

This home
$337K$814K

This home is worth more than 93% of homes in Shirley 11967.

How it measures up in Shirley 11967

The dot is this home. The mark in the middle is the typical home in Shirley 11967.

Estimated value$665,004
CheaperTypical $510,000Pricier

Pricier than 93% of homes nearby

Price per ft²$195
CheaperTypical $365Pricier

Cheaper than almost all homes nearby

Living area3,414 ft²
SmallerTypical 1,403 ft²Bigger

Bigger than almost all homes nearby

Lot size0.37 ac
SmallerTypical 0.25 acBigger

Bigger than 66% of homes nearby

Year built1991
OlderTypical 1974Newer

Newer than 83% of homes nearby

How 21 Roberts Rd W ranks against every home in each area.
MeasureThis homeShirley 11967Suffolk County
Estimated valuepricier than$665,00493% of homes44% of homes
Price per ft²pricier than$195almost no homesalmost no homes
Living areabigger than3,414 ft²almost all homes94% of homes
Lot sizebigger than0.37 ac66% of homes62% of homes
Year builtnewer than199183% of homes77% of homes

About 21 Roberts Rd W

How much is 21 Roberts Rd W, Shirley, NY worth?

The TopHap Estimate for 21 Roberts Rd W, Shirley, NY is $665,004 as of Aug 30, 2026. The likely range is $613,374 to $716,634. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Roberts Rd W, Shirley, NY last sell?

21 Roberts Rd W, Shirley, NY last sold on Jul 18, 1997 for $146,280, according to the county's recorded deed.

How big is 21 Roberts Rd W, Shirley, NY?

21 Roberts Rd W, Shirley, NY has 4 bedrooms, 3 bathrooms, 3,414 square feet of living space and a 0.37-acre lot.

When was 21 Roberts Rd W, Shirley, NY built?

21 Roberts Rd W, Shirley, NY was built in 1991, making it 35 years old. The building has 2 stories.

What schools serve 21 Roberts Rd W, Shirley, NY?

21 Roberts Rd W, Shirley, NY is assigned to William Floyd Elementary School (elementary), rated C+; William Floyd High School (high), rated D+; William Floyd Middle School (middle), rated C. All sit in William Floyd Union Free School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Roberts Rd W, Shirley, NY compare to other homes in Shirley 11967?

Among the 8,586 homes in Shirley 11967, it is worth more than 93% of them ($665,004 against a typical $510,000), its price per square foot is higher than almost none of them ($195 against a typical $365), it is bigger than almost all of them (3,414 ft² against a typical 1,403 ft²), its lot is bigger than 66% of them (0.37 ac against a typical 0.25 ac) and it is newer than 83% of them (1991 against a typical 1974). Measured against all of Suffolk County, it is worth more than 44% 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 Roberts Rd W, Shirley, NY?

The 2024 property tax bill for 21 Roberts Rd W, Shirley, NY was $9,943. The county assessed it at $2,560.

More homes on Roberts Rd W

Closest homes

More homes in Shirley 11967

Assigned schools

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