Bring your vision to 86 Union Ave, a charming Islip property with classic character and an exceptional location! This traditional home features a welcoming covered front porch, distinctive architectural details, and a spacious, level lot with a detached garage/outbuilding. The generous grounds offer plenty of possibilities for outdoor living, gardening, recreation, or future improvements. Ideally situated directly next to the Islip Public Library and close to local shops, restaurants, parks, and village amenities. A unique opportunity to restore, renovate, and make this property your own in a highly desirable Islip location!
For sale
$699,990
86 Union Avenue, Islip, NY 11751
3beds
1,236sqft
Single Family Residence, Residential
Built in 1892
0.25 Acres Lot
$-- Zestimate®
$566/sqft
$-- HOA
What's special
Outdoor livingDistinctive architectural detailsSpacious level lotGenerous groundsWelcoming covered front porch
- 13 days
- 2,613
- 234
Likely to sell faster than
Zillow last checked:
Listing updated:
Listed by:
Michael J Watts & Assoc Inc 631-650-9933,
Michael J. Watts
Source: OneKey® MLS as distributed by MLS GRID,MLS#: 1048892
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 3
- Bathrooms: 2
- Full bathrooms: 1
- 1/2 bathrooms: 1
Heating
- Hot Water, Natural Gas
Cooling
- None
Appliances
- Included: Dishwasher, Gas Range, Refrigerator
Features
- Storage
- Basement: Unfinished
- Attic: Pull Stairs,Unfinished
Interior area
- Total structure area: 1,994
- Total interior livable area: 1,236 sqft
Property
Parking
- Total spaces: 2
- Parking features: Detached
- Garage spaces: 2
Lot
- Size: 0.25 Acres
Details
- Parcel number: 0500396000400070000
- Special conditions: None
Construction
Type & style
- Home type: SingleFamily
- Architectural style: Colonial
- Property subtype: Single Family Residence, Residential
Materials
- Frame
Condition
- Year built: 1892
Utilities & green energy
- Sewer: Public Sewer
- Water: Public
- Utilities for property: Electricity Connected, Natural Gas Connected, Sewer Connected
Community & HOA
HOA
- Has HOA: No
Location
- Region: Islip
Financial & listing details
- Price per square foot: $566/sqft
- Tax assessed value: $28,600
- Annual tax amount: $10,299
- Date on market: 9/29/2026
- Cumulative days on market: 14 days
- Listing agreement: Exclusive Right To Sell
- Electric utility on property: Yes
Estimated market value
Not available
Estimated sales range
Not available
Not available
Price history
| Date | Event | Price |
|---|---|---|
| 9/29/2026 | Listed for sale | $699,990$566/sqft |
Source:  OneKey® MLS as distributed by MLS GRID #1048892 Report a problem | ||
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2025 | -- | $28,600 |
| 2024 | -- | $28,600 |
| 2023 | -- | $28,600 |
| 2022 | -- | $28,600 |
| 2021 | -- | $28,600 |
| 2020 | -- | $28,600 |
| 2019 | -- | $28,600 |
| 2018 | -- | $28,600 |
| 2017 | $8,244 | $28,600 |
| 2016 | -- | $28,600 |
| 2015 | -- | $28,600 |
| 2014 | -- | $28,600 +13% |
| 2013 | -- | $25,300 -6.3% |
| 2012 | -- | $27,000 |
| 2011 | -- | $27,000 |
| 2007 | $6,279 +16.8% | $27,000 |
| 2005 | $5,376 +7.9% | $27,000 |
| 2004 | $4,982 +7.3% | $27,000 |
| 2003 | $4,642 +7.5% | $27,000 |
| 2002 | $4,318 | $27,000 |
| 2001 | -- | $27,000 |
| 2000 | $3,810 | $27,000 |
Find assessor info on the county website
Monthly payment
Climate risks
Neighborhood: 11751
Nearby schools
Schools provided by the listing agent
- Elementary: Maud S Sherwood Elementary School
- Middle: Islip Middle School
- High: Islip High School
Source: OneKey® MLS as distributed by MLS GRID. This data may not be complete. We recommend contacting the local school district to confirm school assignments for this home.
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