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Single Family ResidenceResidential
$714,218$714 / 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 95How 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
Last sold for $420,000 on Aug 11, 2016

1 GRENDON LN

COMMACK, NY 11725
3
Beds
2
Baths
1,000 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.
0.33 ac
Lot SizeThe size of the land the home sits on, from county records.
1960
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$714K
$675K low$753K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$420,000 · Aug 11, 2016

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$11,901 (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.$4,280 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$375
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$3,905
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$535,000

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
CountySUFFOLK
Lot (acres)The size of the land the home sits on, from county records.0.33
HeatingThe type of heating system in the home.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
PoolWhether the property has a pool, and what kind, such as in-ground.Spa/Hot Tub (Only)
ViewThe type of view from the property, or another feature of the site that affects value.Suburban

Transaction History(3)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Neighborhood · ZIP 11725These 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.42
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.104
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.75

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.98%
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.2.3%
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.29,060
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,956 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$164,054
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$187,880
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

1 Grendon Ln 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 71% of homes in Commack 11725
  • Costs more per square foot than 95% of homes in Commack 11725
  • Smaller than 97% of homes in Commack 11725
  • Has a bigger lot than 68% of homes in Commack 11725
  • Older than 68% of homes in Suffolk County

What homes are worth in Commack 11725

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

This home
$576K$1.3M

This home is worth more than 29% of homes in Commack 11725.

How it measures up in Commack 11725

The dot is this home. The mark in the middle is the typical home in Commack 11725.

Estimated value$714,218
CheaperTypical $780,462Pricier

Pricier than 29% of homes nearby

Price per ft²$714
CheaperTypical $474Pricier

Pricier than 95% of homes nearby

Living area1,000 ft²
SmallerTypical 1,815 ft²Bigger

Bigger than 3% of homes nearby

Lot size0.33 ac
SmallerTypical 0.26 acBigger

Bigger than 68% of homes nearby

Year built1960
OlderTypical 1963Newer

Newer than 38% of homes nearby

How 1 Grendon Ln ranks against every home in each area.
MeasureThis homeCommack 11725Suffolk County
Estimated valuepricier than$714,21829% of homes54% of homes
Price per ft²pricier than$71495% of homes89% of homes
Living areabigger than1,000 ft²3% of homes11% of homes
Lot sizebigger than0.33 ac68% of homes57% of homes
Year builtnewer than196038% of homes32% of homes

About 1 Grendon Ln

How much is 1 Grendon Ln, Commack, NY worth?

The TopHap Estimate for 1 Grendon Ln, Commack, NY is $714,218 as of Sep 24, 2026. The likely range is $675,170 to $753,266. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 1 Grendon Ln, Commack, NY last sell?

1 Grendon Ln, Commack, NY last sold on Aug 11, 2016 for $420,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 1 Grendon Ln, Commack, NY?

1 Grendon Ln, Commack, NY has 3 bedrooms, 2 bathrooms, 1,000 square feet of living space and a 0.33-acre lot.

When was 1 Grendon Ln, Commack, NY built?

1 Grendon Ln, Commack, NY was built in 1960, making it 66 years old. It is a ranch home. The building has 1 story.

How does 1 Grendon Ln, Commack, NY compare to other homes in Commack 11725?

Among the 9,143 homes in Commack 11725, it is worth more than 29% of them ($714,218 against a typical $780,462), its price per square foot is higher than 95% of them ($714 against a typical $474), it is bigger than 3% of them (1,000 ft² against a typical 1,815 ft²), its lot is bigger than 68% of them (0.33 ac against a typical 0.26 ac) and it is newer than 38% of them (1960 against a typical 1963). Measured against all of Suffolk County, it is worth more than 54% 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 1 Grendon Ln, Commack, NY?

The 2024 property tax bill for 1 Grendon Ln, Commack, NY was $11,901. The county assessed it at $4,280.

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