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Single Family ResidenceResidential
$529,827$466 / 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 87How 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 $500,000 on Oct 1, 2025

104 ROSEMONT AVE

FARMINGVILLE, NY 11738
3
Beds
1
Baths
1,136 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.
0.23 ac
Lot SizeThe size of the land the home sits on, from county records.
1972
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
5
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$530K
$459K low$600K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$500,000 · Oct 1, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,858 (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.$2,320 (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.$2,070
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$483,333

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.0.23
HeatingThe type of heating system in the home.Radiant
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(2)

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.

H
Sachem High School EastB+
High · Grades 9–12 · 0.5 mi
E
Lynwood Avenue Elementary SchoolC-
Elementary · Grades KG–5 · 0.7 mi
M
Sagamore Middle SchoolB
Middle · Grades 6–8 · 2.1 mi

District: Sachem Central School District

Neighborhood · ZIP 11738These 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.36
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 100.65

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.19%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.2%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.3%
PopulationHow many people live in this area.16,570
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,262 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$125,315
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$152,500
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

104 Rosemont 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 85% of homes in Suffolk County
  • Costs more per square foot than 82% of homes in Farmingville 11738
  • Smaller than 84% of homes in Farmingville 11738
  • Has a smaller lot than 72% of homes in Farmingville 11738
  • Newer than 66% of homes in Farmingville 11738

What homes are worth in Farmingville 11738

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

This home
$369K$958K

This home is worth more than 17% of homes in Farmingville 11738.

How it measures up in Farmingville 11738

The dot is this home. The mark in the middle is the typical home in Farmingville 11738.

Estimated value$529,827
CheaperTypical $623,034Pricier

Pricier than 17% of homes nearby

Price per ft²$466
CheaperTypical $354Pricier

Pricier than 82% of homes nearby

Living area1,136 ft²
SmallerTypical 1,795 ft²Bigger

Bigger than 16% of homes nearby

Lot size0.23 ac
SmallerTypical 0.31 acBigger

Bigger than 28% of homes nearby

Year built1972
OlderTypical 1970Newer

Newer than 66% of homes nearby

How 104 Rosemont Ave ranks against every home in each area.
MeasureThis homeFarmingville 11738Suffolk County
Estimated valuepricier than$529,82717% of homes15% of homes
Price per ft²pricier than$46682% of homes65% of homes
Living areabigger than1,136 ft²16% of homes19% of homes
Lot sizebigger than0.23 ac28% of homes38% of homes
Year builtnewer than197266% of homes56% of homes

About 104 Rosemont Ave

How much is 104 Rosemont Ave, Farmingville, NY worth?

The TopHap Estimate for 104 Rosemont Ave, Farmingville, NY is $529,827 as of Sep 24, 2026. The likely range is $459,291 to $600,363. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 104 Rosemont Ave, Farmingville, NY last sell?

104 Rosemont Ave, Farmingville, NY last sold on Oct 1, 2025 for $500,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 104 Rosemont Ave, Farmingville, NY?

104 Rosemont Ave, Farmingville, NY has 3 bedrooms, 1 bathrooms, 1,136 square feet of living space and a 0.23-acre lot.

When was 104 Rosemont Ave, Farmingville, NY built?

104 Rosemont Ave, Farmingville, NY was built in 1972, making it 54 years old. It is a ranch home. The building has 1 story.

What schools serve 104 Rosemont Ave, Farmingville, NY?

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

How does 104 Rosemont Ave, Farmingville, NY compare to other homes in Farmingville 11738?

Among the 4,635 homes in Farmingville 11738, it is worth more than 17% of them ($529,827 against a typical $623,034), its price per square foot is higher than 82% of them ($466 against a typical $354), it is bigger than 16% of them (1,136 ft² against a typical 1,795 ft²), its lot is bigger than 28% of them (0.23 ac against a typical 0.31 ac) and it is newer than 66% of them (1972 against a typical 1970). Measured against all of Suffolk County, it is worth more than 15% 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 104 Rosemont Ave, Farmingville, NY?

The 2024 property tax bill for 104 Rosemont Ave, Farmingville, NY was $8,858. The county assessed it at $2,320.

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