50 Union Avenue, Islip, NY 11751
OFF MARKET

$861,400

Trulia Estimate
  • 4 Beds
  • 3 Baths

50 Union Avenue, Islip, NY 11751

Est. Refi. Payment $5,960/mo*
Refinance Your Home
Currently Off Market - Sold Oct 18, 2024 for $739,900

Home Value

Trulia Estimate
$861K
Since last month
Decreased$29K (-3.3%)
Since last year
Increased$39K (+4.8%)
Since last sale
Increased$123K (+16.6%)
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 +110% in the last 10 years
MonthEstimated value
2026
September 2026$863K
August 2026$892K
July 2026$877K
June 2026$889K
May 2026$865K
April 2026$848K
March 2026$847K
February 2026$891K
January 2026$829K
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
77 Church Avenue, Islip, NY
0.21
Single-Family Home
$735,000
10/10/25
4
2.5
2,500
46 Monell Avenue, Islip, NY
0.08
Single-Family Home
$821,000
06/29/26
5
2
2,700
91 Union Avenue, Islip, NY
0.18
Single-Family Home
$750,000
10/22/25
4
2
2,481
47 Smith Avenue, Islip, NY
0.10
Single-Family Home
$800,000
05/21/26
4
2
2,128
53 Church Avenue, Islip, NY
0.16
Single-Family Home
$698,000
10/01/25
4
2
1,937
146 Smith Avenue, Islip, NY
0.30
Single-Family Home
$765,000
11/19/25
3
2.5
1,800
117 Union Avenue, Islip, NY
0.24
Single-Family Home
$867,000
03/02/26
3
2.5
2,415
61 N Ocean Avenue, Islip, NY
0.25
Single-Family Home
$650,000
09/11/26
4
2.5
1,612
71 Willow Avenue, Islip, NY
0.18
Single-Family Home
$800,000
02/02/26
3
1.5
2,172

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
46 Monell Avenue, Islip, NY 11751
0.08
$821,000
5
2
2,700
Recently Sold
47 Smith Avenue, Islip, NY 11751
0.10
$800,000
4
2
2,128
Recently Sold
98 Cortelyou Street, Islip, NY 11751
0.09
$776,000
5
2
2,000
Off Market
91 Union Avenue, Islip, NY 11751
0.18
$789,500
4
2
2,481
Off Market
65 Willow Avenue, Islip, NY 11751
0.18
$949,500
3
2
-
Off Market
199 Raymond Street, Islip, NY 11751
0.17
$825,600
3
2
2,372
Off Market
71 Willow Avenue, Islip, NY 11751
0.18
$800,000
3
1.5
2,172
Recently Sold
53 Church Avenue, Islip, NY 11751
0.16
$736,800
4
2
1,937
Off Market
24 Bay 3rd, Islip, NY 11751
0.20
$595,000
3
1
1,176
Recently Sold
77 Church Avenue, Islip, NY 11751
0.21
$774,900
4
2.5
2,500
Off Market
57 Grant Avenue, Islip, NY 11751
0.17
$653,600
4
3
-
Off Market

Local Information

  • Map ViewExplore the area around 50 Union Avenue.
  • Schools2 Elementary Schools1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Home Highlights

Single-Family Home
Built in 1957
Open Parking

About this House

What's unique:Meticulously landscaped backyardFully finished basementSerene backyard retreatPrivate paradiseLuxurious home officeExpansive open floor plan
Discover the epitome of luxurious living in this exquisite south of Montauk-style ranch in Islip! This home is designed to impress with its expansive open floor plan, featuring rich hardwood floors that flow seamlessly throughout. The gourmet kitchen is a culinary masterpiece, complete with gleaming granite countertops, stainless steel appliances, and a sliding glass door that opens to a serene backyard retreat. The elegant dining room and inviting living room, accentuated by a striking stone fireplace, create the perfect setting for both casual gatherings and sophisticated entertaining. This home offers four bedrooms and three beautifully appointed baths, including two primary suites. One of these suites is versatile enough to serve as a luxurious home office or a comfortable space for an extra room. The fully finished basement is a true entertainer's dream, boasting a spacious media area and a chic full bar that promises countless memorable gatherings. Step outside to your private paradise, where a sprawling 20x40 patio, a charming 10x10 pergola, and a pristine 16x27 inground saltwater pool, surrounded by elegant Cambridge pavers, await. The meticulously landscaped backyard is fully fenced, ensuring your ultimate privacy. Perfectly positioned near Islip's picturesque village, gourmet restaurants, a well-stocked library, Islip Beach, and the Long Island Rail Road, this home combines convenience with a touch of luxury. Move right in and start living the dream lifestyle you've always imagined!, Additional information: Appearance:Mint,Interior Features:Guest Quarters
50 Union Avenue, Islip, NY 11751 is a 4 bedroom, 3 bathroom single-family home built in 1957. It last sold for $739,900 on Oct 18, 2024 (1% below the $749,000 asking price). This property is not currently displayed as for sale or rent on Trulia. The Trulia Estimate is $861,400, with a rent estimate of $4,537/month.
Last check for updates: about 11 hours ago
Listed by Matthew B. Arnold, (631) 661-5100
Netter Real Estate Inc, (631) 661-5100
Bought with: Matthew B. Arnold, (631) 661-5100, Netter Real Estate Inc, (631) 661-5100
Source: OneKey® MLS as distributed by MLS GRID, MLS#L3573233

Home Details for 50 Union Avenue

Interior Features

Interior Details
Basement: Finished,FullNumber of Rooms: 10Types of Rooms: Auxiliary Room
Beds & Baths
Number of Bedrooms: 4Number of Bathrooms: 3Number of Bathrooms (full): 3
Appliances & Utilities
Appliances: Dishwasher, Dryer, Microwave, Refrigerator, Washer, Oil Water HeaterDishwasherDryerMicrowaveRefrigeratorWasher
Heating & Cooling
Heating: Oil,Forced AirHas CoolingAir Conditioning: Central AirHas HeatingHeating Fuel: Oil
Fireplace & Spa
Number of Fireplaces: 1Has a FireplaceNo Spa
Windows, Doors, Floors & Walls
Flooring: Hardwood
Levels, Entrance, & Accessibility
Levels: OneFloors: Hardwood
Security
Security: Security System

Exterior Features

Exterior Home Features
Patio / Porch: Patio, PorchFencing: Back YardHas a Private Pool
Parking & Garage
No CarportHas Open ParkingParking: Private,Driveway
Pool
Pool: In GroundPool

Property Information

Year Built
Year Built: 1957Year Renovated: 2017
Property Type / Style
Property Type: ResidentialProperty Subtype: Single Family Residence, ResidentialArchitecture: Ranch
Building
Construction Materials: Vinyl SidingNot Attached Property
Property Information
Parcel Number: 0500370000400017000

Price & Status

Price
List Price: $749,000
Status Change & Dates
Off Market Date: Tue Sep 24 2024

Active Status

MLS Status: Sold

Location

Direction & Address
City: Islip
School Information
Elementary School: Maud S Sherwood Elementary SchoolJr High / Middle School: Islip Middle SchoolHigh School: Islip High SchoolHigh School District: Islip

Community

Not Senior Community

HOA

No HOA

Lot Information

Lot Area: 10019 sqft

Offer

Listing Agreement Type: Exclusive Right To Lease

Miscellaneous

BasementMls Number: L3573233Attic: PartialShowing Requirements: Call Listing Office

Price and Tax history

DateEventPrice
Oct 18, 2024
Source: OneKey® MLS as distributed by MLS GRID #L3573233
Sold
$739,900
Sep 25, 2024
Source: OneKey® MLS as distributed by MLS GRID #3573233
Pending
$749,000
Sep 1, 2024
Source: OneKey® MLS as distributed by MLS GRID #3573233
PriceChange
$749,000
Price decreased by 6%
Aug 19, 2024
Source: OneKey® MLS as distributed by MLS GRID #3573233
Listed For Sale
$799,000
Aug 15, 2024
Source: N/A
ListingRemoved

Market trends in Islip

Last updated August 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
—
Sale-to-List Price
—
Price per sq ft
—
Available listings
43
7MoM

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

Based on information submitted to the MLS GRID as of 2026-09-23 10:53:15 PDT All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information. Some IDX listings have been excluded from this website. Click here for more information

Frequently asked questions about 50 Union Avenue

  • What is 50 Union Avenue estimated to be worth?
    Trulia's estimated value for 50 Union Avenue in Islip, NY is $861,400.
  • What is the price history for 50 Union Avenue?
    50 Union Avenue in Islip, NY last sold for $739,900 in October 2024.
  • 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.
  • Does 50 Union Avenue have air conditioning?
    Yes, 50 Union Avenue in Islip, NY has air conditioning.
  • Does 50 Union Avenue have a pool?
    Yes, 50 Union Avenue in Islip, NY has a pool.

Explore by feature - Air Conditioning

6 rentals with air conditioning in Islip, NY

Explore by feature - Washer/dryer

7 rentals with a washer/dryer in Islip, NY

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Off Market Homes Near 50 Union Avenue

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Homes for sale near 50 Union Avenue

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