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Single Family ResidenceResidential
$572,726
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 85How 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

140 ST MARKS LN

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

Valuation

$573K
$488K low$657K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$12,737 (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.$38,600 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$16,900
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$21,700
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$543,662

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.96 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.45%
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.0.40
PoolWhether the property has a pool, and what kind, such as in-ground.No

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.

M
Islip Middle SchoolC+
Middle · Grades 7–8 · 0.9 mi
H
Islip High SchoolB+
High · Grades 9–12 · 0.9 mi
E
Wing Elementary School
Elementary · Grades KG–1 · 1.3 mi

District: Islip Union Free School District

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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

140 St Marks Ln 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 77% of homes in Suffolk County
  • Has a bigger lot than 74% of homes in Islip

How it measures up in Islip

The dot is this home. The mark in the middle is the typical home in Islip.

Estimated value$572,726
CheaperTypical $631,520Pricier

Pricier than 27% of homes nearby

Lot size0.4 ac
SmallerTypical 0.25 acBigger

Bigger than 74% of homes nearby

How 140 St Marks Ln ranks against every home in each area.
MeasureThis homeIslipSuffolk County
Estimated valuepricier than$572,72627% of homes23% of homes
Lot sizebigger than0.4 ac74% of homes66% of homes

About 140 St Marks Ln

How much is 140 St Marks Ln, , NY worth?

The TopHap Estimate for 140 St Marks Ln, , NY is $572,726 as of Sep 24, 2026. The likely range is $488,411 to $657,041. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 140 St Marks Ln, , NY last sell?

140 St Marks Ln, , NY last sold on Jan 1, 1900, according to the county's recorded deed.

What schools serve 140 St Marks Ln, , NY?

140 St Marks Ln, , NY is assigned to Islip Middle School (middle), rated C+; Islip High School (high), rated B+; Wing Elementary School (elementary). All sit in Islip Union Free School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 140 St Marks Ln, , NY compare to other homes in Islip?

Among the 5,055 homes in Islip, it is worth more than 27% of them ($572,726 against a typical $631,520) and its lot is bigger than 74% of them (0.4 ac against a typical 0.25 ac). Measured against all of Suffolk County, it is worth more than 23% 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 140 St Marks Ln, , NY?

The 2024 property tax bill for 140 St Marks Ln, , NY was $12,737. The county assessed it at $38,600.

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Assigned schools

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