21 Saint Marks Ln, Islip, NY 11751
OFF MARKET

$727,500

Trulia Estimate
  • 3 Beds
  • 1 Bath
  • 1,800 sqft (on 0.33 acres)

21 Saint Marks Ln, Islip, NY 11751

Est. Refi. Payment $4,837/mo*
Refinance Your Home
Currently Off Market - Sold Dec 21, 2011 for $325,000

Home Value

Trulia Estimate
$728K
Since last month
Decreased$7K (-0.9%)
Since last year
Increased$54K (+8%)
Since last sale
Increased$402K (+123.7%)
Learn more about this home's value by checking out its Trulia Estimate, the value of nearby homes, and how much similar homes have sold for.

Trulia Estimate

The of this home's value increased by +89% in the last 10 years
MonthEstimated value
2026
August 2026$727K
July 2026$734K
June 2026$728K
May 2026$718K
April 2026$704K
March 2026$704K
February 2026$693K
January 2026$696K
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016

Comparable sales

These are recently sold homes that have a similar location or other similar features to this home, like bedrooms, bathrooms, and square footage. Get a sense of the expected prices in the area by viewing these homes.
Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
149 Union Avenue, Islip, NY
0.48
Single-Family Home
$685,000
05/04/26
3
1
1,539
816 Main Street, Islip, NY
0.11
Single-Family Home
$630,000
06/04/26
2
1.5
1,500
24 Bay 3rd, Islip, NY
0.26
Single-Family Home
$595,000
05/27/26
3
1
1,176
71 Willow Avenue, Islip, NY
0.34
Single-Family Home
$800,000
02/02/26
3
1.5
2,172
36 Manitton Court, Islip, NY
0.17
Single-Family Home
$917,000
07/29/26
3
2
2,058
72 Locust Ave, Islip, NY
0.43
Single-Family Home
$310,000
11/06/25
3
1.5
1,584
70 Islip Avenue, Islip, NY
0.25
Single-Family Home
$650,000
02/27/26
4
2
1,696
24 Hollister Lane, Islip, NY
0.25
Single-Family Home
$1,250,000
12/01/25
3
2
2,464
59 Wingam Drive, Islip, NY
0.17
Single-Family Home
$825,000
03/02/26
4
2
1,900
39 Shebar Drive, Islip, NY
0.38
Single-Family Home
$855,000
07/28/26
3
2
1,900

Nearby home prices

Get a sense of expected prices in the area by checking the value of nearby homes.
Address
Distance
Price
Bed
Bath
Sqft
Status
150-59 Main Street, Islip, NY 11751
0.07
$165,700
2
1
500
Off Market
150 #4 Main Street, Islip, NY 11751
0.07
$142,000
1
1
499
Recently Sold
150-51 Main Street, Islip, NY 11751
0.07
$263,400
1
1
-
Off Market
12 Sutton Place, Islip, NY 11751
0.09
$775,000
2
2.5
1,700
Off Market
37 Woodside Avenue, Islip, NY 11751
0.08
$775,600
4
2
-
Off Market
808 Montauk Hwy, Islip, NY 11751
0.09
$501,500
2
1
830
Off Market
816 Main Street, Islip, NY 11751
0.10
$630,000
2
1.5
1,500
Recently Sold
17 Sutton Place, Islip, NY 11751
0.14
$664,000
2
2.5
1,693
Recently Sold
36 Wingam Drive, Islip, NY 11751
0.09
$842,000
4
2
2,331
Recently Sold
7 Sutton Place, Islip, NY 11751
0.14
$595,000
3
2.5
1,900
Recently Sold
36 Manitton Court, Islip, NY 11751
0.17
$917,000
3
2
2,058
Recently Sold
58 Richardson Lane, Islip, NY 11751
0.14
$841,800
3
1.5
-
Off Market

Local Information

  • Map ViewExplore the area around 21 Saint Marks Ln.
  • Schools3 Elementary Schools1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Home Highlights

Property Type
Single-Family Home
Year Built
1936
Lot Size
0.33 acres
Living Area
1,800 sqft
Price/Sqft
$404

About this House

Charming 3 Bedroom Cape With Huge Formal Living Room With Oak Floors And Fireplace And Large Formal Dining Room Too. Bonuses Include Lovely Enclosed Sunroom Plus 1300 Sq Ft Basement And Detached Garage In St Mark's Estate Area South Of Montauk. 2011 Taxes With Basic Star: $10545.47
21 Saint Marks Ln, Islip, NY 11751 is a 3 bedroom, 1 bathroom, 1,800 sqft single-family home built in 1936. It last sold for $325,000 on Dec 21, 2011. This property is not currently displayed as for sale or rent on Trulia. The Trulia Estimate is $727,500, with a rent estimate of $3,324/month.

Home Details for 21 Saint Marks Ln

Property Information

Year Built
Year Built: 1936
Property Type / Style
Property Type: Single Family Home

Community

Units in Building: 1

Lot Information

Lot Area: 0.33 acres

Price and Tax history

DateEventPrice
Dec 21, 2011
Source: N/A
Sold
$325,000
Jul 3, 2011
Source: Agent Provided
PriceChange
$334,950
Price increased by 3%
Jul 2, 2011
Source: Agent Provided
PriceChange
$324,950
Price decreased by 12%
May 27, 2011
Source: Agent Provided
PriceChange
$368,000
Price decreased by 7%
Apr 3, 2011
Source: Agent Provided
Listed For Sale
$394,500

Market trends in Islip

Last updated July 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
—
Sale-to-List Price
—
Price per sq ft
—
Available listings
36
6MoM

Around this home

What Locals Say about Islip

At least 118 Trulia users voted on each feature.

  • 90 % Say parking is easy

  • 90 % Say it's dog friendly

  • 88 % Say car is needed

  • 86 % Say there's holiday spirit

  • 85 % Say yards are well-kept

  • 75 % Say people would walk alone at night

  • 73 % Say kids play outside

  • 65 % Say neighbors are friendly

  • 64 % Say it's quiet

  • 63 % Say it's walkable to restaurants

  • 62 % Say streets are well-lit

  • 62 % Say they plan to stay for at least 5 years

  • 59 % Say there are sidewalks

  • 59 % Say it's walkable to grocery stores

  • 59 % Say there's wildlife

  • 49 % Say there are community events

Sourced by Trulia users. Learn more about our methodology.
  • Michellereid2323
    "Family-oriented neighborhood. Main Street is charming, walkable, and dotted with boutiques, cafes, and diners."
    0
    Flag
  • Matt Classie
    "Street fairs, events at Brookwood Hall during holidays. Theres lots to do in the town of Islip. Bats & Brews is a great event."
    0
    Flag
  • Yen160107
    "I have kids that play in the front yard and they step on the dog feces that they left behind. Also I have signs that say “kids at play” but they do not care"
    0
    Flag
  • Trulia User
    "The drive is horrible and the traffic which is 300 feet from your front door is deafening! A ten lane super hwy and that’s what you wake up to at 4:30 am every day ! Or you can take the train a mile away which you can also here every morning blasting it’s way to islip train station . "
    0
    Flag
  • Trulia User
    "Well celebrate almost all the events soccer games good school very friendly neighborhoods good shopping center "
    1
    Flag
  • Jamal G.
    "this neighborhood is a great place to live there are restaurants in the mall nearby good schools and they are also close"
    14
    Flag
  • Stephen B.
    "The taxes are very high here for the school. Bay Shore schools are just as good or better and the taxes are much lower. "
    9
    Flag
  • Michael .
    "Good! I work in the city and take the LIRR. The islip station has free parking and plenty of spaces."
    1
    Flag
  • Monmona
    "you need to have a car to commute around. around. if you live close enough to the Long Island Railroad, then you can walk to the station and take the train from there."
    1
    Flag
  • Fldsetter
    "I grew up here and actually bought my childhood home back after living in another part of the country . Beaches are close , most folks keep there homes well maintained . There are lot of children here and the schools are second to none . I wish the town would replace the roads here , and take better care of there pubic areas ! But let the young folks moving in fight that fight ! "
    1
    Flag
  • Djhafner132
    "5 min to train station.the neighbors are friendly.i am an avid fisherman and two fishing piers are less than a mile away.the streets are well treed and maintained "
    0
    Flag
  • Djhafner132
    "I lived here since 1973.The homes are well kept and neighbors are friendly.the town dock is an easy walk with great fishing the streets are well maintained.All in all a great place to live"
    0
    Flag
  • Djhafner132
    "Parades block parties great fishing close by.great south of montauk location.Great place to raise a family "
    0
    Flag
  • Ricktssf
    "I work locally, so I can walk to work. the train station to NYC is only 4 blocks away. easy commute on the train. "
    2
    Flag
  • G.Greco
    "I've made Islip my home since 1980. Yards are well kept, the streets are maintained, paved and cleaned regularly. The school district is good. It's a good place to live and raise a family. This area south of Montauk is very desirable"
    16
    Flag
  • Tannuramees
    "parades, fairs, shops close by, farmers market, good schools, nice neighborhood, school events, town events"
    1
    Flag
  • Catherine M.
    "I have lived here for 18 years and for the most part it’s a good area. I am not a huge fan of the school district but it’s not horrible either ."
    11
    Flag
  • Stefbartoli
    "Dog friendly neighborhood! People walk their dogs around regularly. Neighbors look out for each other’s pets as well. "
    1
    Flag
  • Tyase930
    "Quiet respectful neighbors. Walking distance to stores. Lots of new businesses and new development s."
    0
    Flag
  • Tony H.
    "I live in this neighborhood for 2 years so far people are very friendly, there's always parking, people walk their dogs at night and exercise regularly. It's pretty cool !!!"
    0
    Flag
  • Fldsetter
    "Crappy roads / rats / compact floresant lights instead of LED ( someone got paid off ) no trees left due to disease , and the town is not planting any ! Highway noise 10 lanes now on Sunrise HWY - RT27 . No plans for a sound wall ??? I guess we are lower class here in Islip . Airplane and helicopters all day and night fly over head ,, isn’t there a bay or ocean they can fly over then go straight up Lakeland Blvd to the airport ???? I will eave as soon as I find a house elsewhere and not in NY "
    0
    Flag
  • Ricktssf
    "I'm 17 years living in Islip. a little great Hamlet along the great South Bay. Town of Islip is much larger, but this is a Suburban area. "
    0
    Flag

LGBTQ Local Legal Protections

Frequently asked questions about 21 Saint Marks Ln

  • What is 21 Saint Marks Ln estimated to be worth?
    Trulia's estimated value for 21 Saint Marks Ln in Islip, NY is $727,500.
  • What is the price history for 21 Saint Marks Ln?
    21 Saint Marks Ln in Islip, NY last sold for $325,000 in December 2011.
  • Is Islip a buyer's or seller's market?
    Islip is currently a seller's market, based on recent for-sale activity.
  • What do residents say about Islip?
    Residents describe Islip, NY as easy to park in, dog-friendly, and well-kept. Most residents say you need a car. See recently sold homes in Islip, NY.
  • How big is the lot at 21 Saint Marks Ln?
    The lot at 21 Saint Marks Ln in Islip, NY is about 0.33 acres (14,400 sq ft).

Explore by feature - Air Conditioning

7 rentals with air conditioning in Islip, NY

Explore by feature - Washer/dryer

6 rentals with a washer/dryer in Islip, NY

Apartments for Rent

Skip to last item
Skip to first item

Off Market Homes Near 21 Saint Marks Ln

Skip to last item
Skip to first item

Homes for sale near 21 Saint Marks Ln

Skip to last item
Skip to first item
Skip to last item
  • Results are loading
Skip to first item