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Single Family ResidenceResidential
$534,087$399 / 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 Jul 14, 2026
Last sold for $360,000 on Sep 29, 2005

84 ROSEMONT AVE

FARMINGVILLE, NY 11738
3
Beds
1
Baths
1,340 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.
1971
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
6
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$534K
$494K low$575K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$360,000 · Sep 29, 2005
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$348,087
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$278,470
Loan-to-ValueHow much is still owed on the home compared to what it is worth. 80% means loans equal 80% of our estimate, so it shifts when the estimate does.35%
1st MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$186,000
US MORTGAGE · R · recorded Oct 6, 2020

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,839 (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.$2,275 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$240
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$2,035
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$473,958

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(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.

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

E
Lynwood Avenue Elementary SchoolC-
Elementary · Grades KG–5 · 0.6 mi
H
Sachem High School EastB+
High · Grades 9–12 · 0.7 mi
M
Sagamore Middle SchoolB
Middle · Grades 6–8 · 2.0 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%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Owner occupied
Company ownedWhether the owner is a company or trust rather than a person.No

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

84 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 65% of homes in Farmingville 11738
  • Smaller than 74% of homes in Farmingville 11738
  • Has a smaller lot than 71% 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
$383K$907K

This home is worth more than 16% 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$534,087
CheaperTypical $622,257Pricier

Pricier than 16% of homes nearby

Price per ft²$399
CheaperTypical $351Pricier

Pricier than 65% of homes nearby

Living area1,340 ft²
SmallerTypical 1,800 ft²Bigger

Bigger than 26% of homes nearby

Lot size0.23 ac
SmallerTypical 0.3 acBigger

Bigger than 29% of homes nearby

Year built1971
OlderTypical 1970Newer

Newer than 62% of homes nearby

How 84 Rosemont Ave ranks against every home in each area.
MeasureThis homeFarmingville 11738Suffolk County
Estimated valuepricier than$534,08716% of homes15% of homes
Price per ft²pricier than$39965% of homes44% of homes
Living areabigger than1,340 ft²26% of homes30% of homes
Lot sizebigger than0.23 ac29% of homes38% of homes
Year builtnewer than197162% of homes53% of homes

About 84 Rosemont Ave

How much is 84 Rosemont Ave, Farmingville, NY worth?

The TopHap Estimate for 84 Rosemont Ave, Farmingville, NY is $534,087 as of Jul 14, 2026. The likely range is $493,507 to $574,667. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 84 Rosemont Ave, Farmingville, NY last sell?

84 Rosemont Ave, Farmingville, NY last sold on Sep 29, 2005 for $360,000, according to the county's recorded deed.

How big is 84 Rosemont Ave, Farmingville, NY?

84 Rosemont Ave, Farmingville, NY has 3 bedrooms, 1 bathrooms, 1,340 square feet of living space and a 0.23-acre lot.

When was 84 Rosemont Ave, Farmingville, NY built?

84 Rosemont Ave, Farmingville, NY was built in 1971, making it 55 years old. It is a ranch home. The building has 1 story.

What schools serve 84 Rosemont Ave, Farmingville, NY?

84 Rosemont Ave, Farmingville, NY is assigned to Lynwood Avenue Elementary School (elementary), rated C-; Sachem High School East (high), rated B+; 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 84 Rosemont Ave, Farmingville, NY compare to other homes in Farmingville 11738?

Among the 4,630 homes in Farmingville 11738, it is worth more than 16% of them ($534,087 against a typical $622,257), its price per square foot is higher than 65% of them ($399 against a typical $351), it is bigger than 26% of them (1,340 ft² against a typical 1,800 ft²), its lot is bigger than 29% of them (0.23 ac against a typical 0.3 ac) and it is newer than 62% of them (1971 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 84 Rosemont Ave, Farmingville, NY?

The 2024 property tax bill for 84 Rosemont Ave, Farmingville, NY was $7,839. The county assessed it at $2,275.

Closest homes

More homes in Farmingville 11738

Assigned schools

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