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Single Family ResidenceResidential
$756,260$555 / 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 Sep 24, 2026
Last sold for $690,000 on Apr 23, 2025

20 HALLOCK ST

RIVERHEAD, NY 11901
1
Baths
1,362 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.
2,750 ft²
Lot SizeThe size of the land the home sits on, from county records.
1935
Year BuiltThe year the home was originally built, according to county records.

Valuation

$756K
$667K low$846K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$690,000 · Apr 23, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,462 (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.$2,680 (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.$2,470
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$454,237

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.0.06
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(1)

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 11901These 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.129
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.107
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.50

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.90%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.14%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.10%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.29,638
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.531 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$77,609
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$107,711
Average tempThe average temperature here across a full year.52°F
Annual precipHow much rain and melted snow falls here in a typical year.47 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

20 Hallock St 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 72% of homes in Riverhead 11901
  • Costs more per square foot than 87% of homes in Riverhead 11901
  • Smaller than 69% of homes in East Farmingdale
  • Among the smallest lots in Riverhead 11901
  • Older than 93% of homes in Suffolk County

What homes are worth in Riverhead 11901

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

This home
$338K$1.9M

This home is worth more than 72% of homes in Riverhead 11901.

How it measures up in Riverhead 11901

The dot is this home. The mark in the middle is the typical home in Riverhead 11901.

Estimated value$756,260
CheaperTypical $608,999Pricier

Pricier than 72% of homes nearby

Price per ft²$555
CheaperTypical $406Pricier

Pricier than 87% of homes nearby

Living area1,362 ft²
SmallerTypical 1,385 ft²Bigger

Bigger than 48% of homes nearby

Lot size2,750 ft²
SmallerTypical 0.32 acBigger

Smaller than almost all homes nearby

Year built1935
OlderTypical 1991Newer

Newer than 10% of homes nearby

How 20 Hallock St ranks against every home in each area.
MeasureThis homeEast FarmingdaleRiverhead 11901Suffolk County
Estimated valuepricier than$756,26060% of homes72% of homes60% of homes
Price per ft²pricier than$55578% of homes87% of homes79% of homes
Living areabigger than1,362 ft²31% of homes48% of homes32% of homes
Lot sizebigger than2,750 ft²2% of homesalmost no homes5% of homes
Year builtnewer than193513% of homes10% of homes7% of homes

About 20 Hallock St

How much is 20 Hallock St, Riverhead, NY worth?

The TopHap Estimate for 20 Hallock St, Riverhead, NY is $756,260 as of Sep 24, 2026. The likely range is $666,920 to $845,600. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 20 Hallock St, Riverhead, NY last sell?

20 Hallock St, Riverhead, NY last sold on Apr 23, 2025 for $690,000, according to the county's recorded deed.

How big is 20 Hallock St, Riverhead, NY?

20 Hallock St, Riverhead, NY has 1 bathrooms, 1,362 square feet of living space and a 0.06-acre lot.

When was 20 Hallock St, Riverhead, NY built?

20 Hallock St, Riverhead, NY was built in 1935, making it 91 years old.

How does 20 Hallock St, Riverhead, NY compare to other homes in Riverhead 11901?

Among the 9,733 homes in Riverhead 11901, it is worth more than 72% of them ($756,260 against a typical $608,999), its price per square foot is higher than 87% of them ($555 against a typical $406), it is bigger than 48% of them (1,362 ft² against a typical 1,385 ft²), its lot is bigger than almost none of them (2,750 ft² against a typical 0.32 ac) and it is newer than 10% of them (1935 against a typical 1991). Measured against all of Suffolk County, it is worth more than 60% 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 20 Hallock St, Riverhead, NY?

The 2024 property tax bill for 20 Hallock St, Riverhead, NY was $2,462. The county assessed it at $2,680.

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