Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$710,169
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 Oct 21, 2026

20 DOROTHEA ST

COMMACK, NY 11725
0
Baths
0.24 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$710K
$647K low$773K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,898 (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.$2,850 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$250
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$2,600
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$633,334

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.14 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.6%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.minimal

Scores 0–100; higher = greater projected risk.

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.0.24
PoolWhether the property has a pool, and what kind, such as in-ground.No

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%

Owner Tools

Do you own this home?
Claim this home

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 Dorothea 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 less than 76% of homes in Commack 11725
  • Has a smaller lot than 78% of homes in Commack 11725

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
$582K$1.3M

This home is worth more than 24% 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$710,169
CheaperTypical $790,195Pricier

Pricier than 24% of homes nearby

Lot size0.24 ac
SmallerTypical 0.26 acBigger

Bigger than 22% of homes nearby

How 20 Dorothea St ranks against every home in each area.
MeasureThis homeCommack 11725Suffolk County
Estimated valuepricier than$710,16924% of homes53% of homes
Lot sizebigger than0.24 ac22% of homes38% of homes

About 20 Dorothea St

How much is 20 Dorothea St, Commack, NY worth?

The TopHap Estimate for 20 Dorothea St, Commack, NY is $710,169 as of Oct 21, 2026. The likely range is $647,075 to $773,263. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 20 Dorothea St, Commack, NY last sell?

20 Dorothea St, Commack, NY last sold on Jan 1, 1900, according to the county's recorded deed.

How does 20 Dorothea St, Commack, NY compare to other homes in Commack 11725?

Among the 9,143 homes in Commack 11725, it is worth more than 24% of them ($710,169 against a typical $790,195) and its lot is bigger than 22% of them (0.24 ac against a typical 0.26 ac). Measured against all of Suffolk County, it is worth more than 53% 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 Dorothea St, Commack, NY?

The 2024 property tax bill for 20 Dorothea St, Commack, NY was $8,898. The county assessed it at $2,850.

More homes on Dorothea St

Closest homes

More homes in Commack 11725

Explore the area

See this home in context

Open 20 Dorothea St on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map