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Single Family ResidenceResidential
$599,281$449 / 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 $275,000 on Dec 29, 2025

100 RIDGEWOOD AVE

HOLTSVILLE, NY 11742
3
Beds
1
Baths
1,336 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.
0.35 ac
Lot SizeThe size of the land the home sits on, from county records.
1974
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
7
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$599K
$553K low$645K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$275,000 · Dec 29, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$9,357 (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.$2,770 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$325
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$2,445
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$577,083

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.17 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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
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.0.35
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
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

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.

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

E
Waverly Elementary SchoolB-
Elementary · Grades KG–5 · 1.7 mi
M
Sagamore Middle SchoolB
Middle · Grades 6–8 · 2.3 mi
H
Sachem High School EastB+
High · Grades 9–12 · 3.0 mi

District: Sachem Central School District

Neighborhood · ZIP 11742These 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.70
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.108
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.65

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.97%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.21%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.4%
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.13,573
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,673 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$128,824
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$140,549
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

100 Ridgewood Ave 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 Suffolk County
  • Costs more per square foot than 79% of homes in Holtsville
  • Smaller than 76% of homes in Holtsville
  • Has a bigger lot than 70% of homes in Holtsville 11742

What homes are worth in Holtsville 11742

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

This home
$406K$1.5M

This home is worth more than 34% of homes in Holtsville 11742.

How it measures up in Holtsville 11742

The dot is this home. The mark in the middle is the typical home in Holtsville 11742.

Estimated value$599,281
CheaperTypical $643,793Pricier

Pricier than 34% of homes nearby

Price per ft²$449
CheaperTypical $374Pricier

Pricier than 72% of homes nearby

Living area1,336 ft²
SmallerTypical 1,718 ft²Bigger

Bigger than 28% of homes nearby

Lot size0.35 ac
SmallerTypical 0.28 acBigger

Bigger than 70% of homes nearby

Year built1974
OlderTypical 1976Newer

Newer than 47% of homes nearby

How 100 Ridgewood Ave ranks against every home in each area.
MeasureThis homeHoltsvilleHoltsville 11742Suffolk County
Estimated valuepricier than$599,28133% of homes34% of homes29% of homes
Price per ft²pricier than$44979% of homes72% of homes61% of homes
Living areabigger than1,336 ft²24% of homes28% of homes30% of homes
Lot sizebigger than0.35 ac69% of homes70% of homes61% of homes
Year builtnewer than197456% of homes47% of homes60% of homes

About 100 Ridgewood Ave

How much is 100 Ridgewood Ave, Holtsville, NY worth?

The TopHap Estimate for 100 Ridgewood Ave, Holtsville, NY is $599,281 as of Aug 30, 2026. The likely range is $553,383 to $645,179. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 100 Ridgewood Ave, Holtsville, NY last sell?

100 Ridgewood Ave, Holtsville, NY last sold on Dec 29, 2025 for $275,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 100 Ridgewood Ave, Holtsville, NY?

100 Ridgewood Ave, Holtsville, NY has 3 bedrooms, 1 bathrooms, 1,336 square feet of living space and a 0.35-acre lot.

When was 100 Ridgewood Ave, Holtsville, NY built?

100 Ridgewood Ave, Holtsville, NY was built in 1974, making it 52 years old. It is a ranch home. The building has 1 story.

What schools serve 100 Ridgewood Ave, Holtsville, NY?

100 Ridgewood Ave, Holtsville, NY is assigned to Waverly Elementary School (elementary), rated B-; Sagamore Middle School (middle), rated B; Sachem High School East (high), rated B+. All sit in Sachem Central School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 100 Ridgewood Ave, Holtsville, NY compare to other homes in Holtsville 11742?

Among the 3,856 homes in Holtsville 11742, it is worth more than 34% of them ($599,281 against a typical $643,793), its price per square foot is higher than 72% of them ($449 against a typical $374), it is bigger than 28% of them (1,336 ft² against a typical 1,718 ft²), its lot is bigger than 70% of them (0.35 ac against a typical 0.28 ac) and it is newer than 47% of them (1974 against a typical 1976). Measured against all of Suffolk County, it is worth more than 29% 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 100 Ridgewood Ave, Holtsville, NY?

The 2024 property tax bill for 100 Ridgewood Ave, Holtsville, NY was $9,357. The county assessed it at $2,770.

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