$685,000
SOLD MAY 4, 2026

149 Union Ave Islip, NY 11751

3 Beds
1 Bath
1,539 Sq Ft
0.29 Acres Lot

Sale Details

Date Sold: May 4, 2026

$445 Per Sq Ft

10% Above List Price

25 on Market

Highlights

  • Colonial Architecture
  • Deck
  • Wood Flooring
  • Islip High School Rated A-
  • Wood Burning Stove
  • 1 Fireplace

About This Home

As of May 2026

Charming Colonial in the heart of Historic Islip, south of Montauk Highway.
Combining classic character with thoughtful updates, including a new roof, upgraded 200amp electric, and gorgeous full bath with soaking tub & large separate shower. Enjoy a spacious dining room with a cozy wood burning stove, bright and inviting living room, eat-in kitchen with SS appliances flowing to a den with sliders to a huge, fenced backyard with IGS, perfect for relaxing or entertaining. Don't miss this rare opportunity!

Last Agent to Sell the Property

Colleen Colasacco

Daniel Gale Sothebys Intl Rlty Brokerage Phone: 631-647-7013 License #10401327448 Listed on: 02/25/2026

Daniel Gale Sothebys Intl Rlty

Last Buyer's Agent

Mary Macaluso

Compass Greater NY LLC License #30MA0942002

Compass Greater NY LLC

Home Details

Home Type

  • Single Family

Est. Annual Taxes

  • $11,796

Year Built

  • Built in 1900

Lot Details

  • 12,632 Sq Ft Lot
  • Back Yard Fenced

Home Design

  • Colonial Architecture
  • Frame Construction

Interior Spaces

  • 1,539 Sq Ft Home
  • 2-Story Property
  • 1 Fireplace
  • Wood Burning Stove
  • Entrance Foyer
  • Formal Dining Room
  • Wood Flooring
  • Unfinished Basement

Kitchen

  • Electric Range
  • Microwave
  • Dishwasher
  • Stainless Steel Appliances

Bedrooms and Bathrooms

  • 3 Bedrooms
  • Bathroom on Main Level
  • 1 Full Bathroom
  • Soaking Tub

Laundry

  • Laundry in unit
  • Dryer
  • Washer

Parking

  • Oversized Parking
  • Driveway

Outdoor Features

  • Deck
  • Porch

Schools

  • Wing Elementary School
  • Islip Middle School
  • Islip High School

Utilities

  • Cooling System Mounted To A Wall/Window
  • Heating System Uses Oil
  • Electric Water Heater
  • Cable TV Available

Listing and Financial Details

  • Assessor Parcel Number 0500-396-00-05-00-014-000

Home Details

Home Type

Single Family

Est. Annual Taxes

$11,796

Year Built

Built in 1900

Lot Details

0.29 Acres

Listing Details

  • Property Type: Residential
  • Architectural Style: Colonial
  • Property SubType: Single Family Residence
  • Property Condition: Actual
  • Levels: Two
  • Year Built: 1900
  • Attribution Contact: 631-647-7013
  • Carport Y N: No
  • CurrentPrice: 685000.00
  • MlsMajorChangeType: Sold
  • CurrentPrice_By_LivingArea: 445.09422
  • ListPrice_By_LivingArea: 406.04288
  • ListPrice_By_OriginalListPrice: 1.00000
  • ListPrice_By_LotSizeAcres: 2154827.5862
  • LivingAreaSearchSqFt: 1539.00
  • CurrentPrice_By_BuildingAreaTotal: 331.39816
  • Special Features: None
  • Property Sub Type: Detached

Interior Features

  • Appliances: Dishwasher, Dryer, Electric Range, Electric Water Heater, Microwave, Refrigerator, Stainless Steel Appliance(s), Washer
  • Interior Amenities: First Floor Full Bath, Entrance Foyer, Formal Dining
  • Fireplaces: 1
  • Flooring: Wood
  • Fireplace Features: Wood Burning Stove
  • Full Bathrooms: 1
  • Basement: Bilco Door(s), Unfinished
  • Total Bedrooms: 3
  • Fireplace: Yes
  • Living Area: 1539
  • Basement YN: Yes

Exterior Features

  • Construction Materials: Frame
  • Fencing: Back Yard, Fenced, Wood
  • Pool Private: No
  • Patio and Porch Features: Deck, Porch
  • Waterfront: No

Garage/Parking

  • Garage: No
  • Parking Description: Driveway, Oversized

Utilities

  • Cooling: Wall/Window Unit(s)
  • Heating: Oil
  • Laundry Features: Inside
  • Sewer: Public Sewer
  • Utilities: Cable Available, Electricity Connected, Sewer Connected, Water Connected
  • Water Source: Public

Condo/Co-op/Association

  • Senior Community: No
  • Association: No

Schools

  • Middle School: Islip Middle School

Lot Info

  • Lot Size Acres: 0.29
  • Lot Size Sq Ft: 12632
  • Parcel Number: 0500-396-00-05-00-014-000
  • Property Attached: No
  • Additional Parcels: No

Rental Info

  • Lease Considered: No

Tax Info

  • Tax Annual Amount: 11796.2
  • Tax Year: 2026

MLS Schools

  • Elementary School: Wing Elementary School
  • High School: Islip High School
  • Middle School District: Islip

Ownership History

Date Name Owned For Owner Type

Purchase Details

Listed on
Aug 20, 2019
Closed on
Nov 27, 2019
Sold by
Mavrokefalos Jason and Mavrokefalos Sania
Bought by
Appell Christopher and Appell Victoria
Seller's Agent
Tammy Gatto
Signature Premier Properties
Buyer's Agent
Eric Ramsay IV
Eric G Ramsay Jr Assoc LLC
List Price
$420,000
Sold Price
$405,000
Premium/Discount to List
-$15,000
-3.57%

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Avg. Annual Appreciation
9.72%
Original Mortgage
$324,041
Outstanding Balance
$278,878
Interest Rate
3.7%
Mortgage Type
New Conventional
Estimated Equity
$459,771

Purchase Details

Closed on
May 24, 2011
Sold by
Zec Jeffrey and Zec Mary Beth
Bought by
Mavrokefalos Jason and Mavrokefalos Sania

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$340,152
Interest Rate
4.87%
Mortgage Type
FHA

Purchase Details

Closed on
Aug 19, 2003
Sold by
Ventura Frank and Ventura Bellear Deborah
Bought by
Zec Jeffrey and Zec Mary Beth

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$296,000
Interest Rate
6.02%
Mortgage Type
Purchase Money Mortgage
Source: Public Records
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Home Values in the Area

Source: Public Records

Average Home Value in this Area





Source: Public Records

Purchase History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Date Type Sale Price Title Company
Deed $405,000 None Available
Bargain Sale Deed $349,000 --
Bargain Sale Deed $370,000 --
Source: Public Records

Mortgage History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Date Status Loan Amount Loan Type
Open $324,041 New Conventional
Previous Owner $340,152 FHA
Previous Owner $296,000 Purchase Money Mortgage
Source: Public Records

Property History

Date Event Price List to Sale Price per Sq Ft Prior Sale
05/04/2026 05/04/26 Sold $685,000 0.0% $445 / Sq Ft
03/23/2026 03/23/26 Pending -- -- --
03/19/2026 03/19/26 Off Market $685,000 -- --
02/25/2026 02/25/26 For Sale $624,900 +54.3% $406 / Sq Ft
11/26/2019 11/26/19 Sold $405,000 -3.6% -- View Prior Sale
09/17/2019 09/17/19 Pending -- -- --
08/20/2019 08/20/19 For Sale $420,000 -- --
Source: OneKey® MLS

Tax History

Year Tax Paid Tax Assessment Tax Assessment Total Assessment is a certain percentage of the fair market value that is determined by local assessors to be the total taxable value of land and additions on the property. Land Improvement
2025 $10,975 $33,000 $13,300 $19,700
2024 $10,975 $33,000 $13,300 $19,700
2023 $10,975 $33,000 $13,300 $19,700
2022 $8,758 $33,000 $13,300 $19,700
2021 $8,758 $33,000 $13,300 $19,700
2020 $9,507 $33,000 $13,300 $19,700
2019 $8,758 $0 $0 $0
2018 -- $33,000 $13,300 $19,700
2017 $8,774 $33,000 $13,300 $19,700
2016 $8,737 $33,000 $13,300 $19,700
2015 -- $33,000 $13,300 $19,700
2014 -- $33,000 $13,300 $19,700
Source: Public Records

Agents Affiliated with this Home

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Map

Source: OneKey® MLS

MLS Number: 963652

OneKey® MLS

APN: 0500-396-00-05-00-014-000

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