Suffolk County  »  11751  »  Union Ave  »  50 Union Ave

50 Union Avenue, Islip, NY 11751 - Property report

Also known as: 50 Union Ave

Property image for 50 Union Avenue, Islip, NY 11751
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Property type

Two Family Year-Round Residence (220)

Year built

1957

Acreage

0.23

Sale price

$739,900

General information

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Access up-to-date information from property owner names to sales history, deeds, tax info, mortgages, development data, planimetric maps and more.

Address
Primary address
50 Union Avenue
ZIP code
11751
County
Suffolk
Village (SWIS code)
472889
Parcel ID
370-4-17

Owner

Find out who owns 50 Union Avenue, Islip, NY 11751. Uncover corporate and individual owners with a free account.

Sales
Sale date
10/18/2024
Sale price
$739,900
Arm's length
Tax
Tax year
2025-2026
Current property tax
$16,350
Zoning & Use
Zoning
Residential (B)
Building
Property type
Two Family Year-Round Residence (220)
Building sq. ft.
1,898
Year built
1957
Lot
Acreage
0.23

Area overview

Walk score
80 /100.  Very Walkable
Transit score
0 /100.  Minimal Transit
Bike score
52 /100.  Bikeable
School district
472802

View more such as transportation, nearby schools and risk designations.

Ownership

Ownership information for 50 Union Avenue, Islip, NY

Property owner name
Registered owner
Source
Deed
Owner contact information
Phone number
Owner address
Documents

Sales history for 50 Union Avenue, Islip, NY 11751

Sale date Sale price Buyer name Seller name
10/18/2024 $739,900 XXX XXXXXXXX XX, XXX XXXXXXX XXXXXX; XXXXX XXXXXX
11/27/2017 $492,000 XXXXXX XXXXXX; XXXXX XXXXXX XXX XXXXX XXX
07/05/2016 $210,000 XXX XXXXX XXX XXXX XXXXXXX X; XXXXXX XXXXXXX X

*Most recent sales on record for this property.

More about Suffolk County property records.

Title documents

Date Type Amount Party 1 Party 2
11/27/2024 - R
10/18/2024 - D		 Deed XXXXXXX XXXXXX XXX XXXXXXXX XX, XXX
01/08/2018 - R
11/27/2017 - D		 Deed
(Bargain and sale)		 XXX XXXXX XXX XXXXXX XXXXXX
07/27/2016 - R
07/05/2016 - D		 Deed
(Bargain and sale)		 XXXX XXXXXXX X XXX XXXXX XXX
08/31/2000 - R
08/16/2000 - D		 Deed XXXXXX XXXXX XXXXXXX XXXXXX

*Most recent recorded documents on file for this property.

R: Recorded date
D: Document date

Tax

Property taxes for 50 Union Avenue, Islip, NY

Property tax data includes tax amount, market value and assessed value, exemptions, abatements and assessment history.

Current property tax
Tax year
2025-2026
Property tax
$16,350
Recent tax assessments
Market value
$729,578
Assessed value
$51,800

More about Suffolk County property taxes

Assessment history

See the assessment and property tax history, including the evolution of the total tax rate and corresponding property tax amount.

Tax year Market value Assessed value Tax rate Property tax Y-o-Y change
2025-2026 $729,578 $51,800 31.564 $16,350 +3.54%
2024-2025 $729,578 $51,800 30.486 $15,792 +3.73%
2023-2024 $711,539 $51,800 29.39 $15,224 +1.68%
2022-2023 $625,604 $51,800 28.904 $14,972 +0.07%
2021-2022 $558,190 $51,800 28.884 $14,962 +3.07%
2020-2021 $534,021 $51,800 28.023 $14,516 -26.94%
2019-2020 $456,388 $51,800 38.357 $19,869 +54.89%
2018-2019 $443,172 $50,300 25.502 $12,828 +14.51%
2017-2018 $365,512 $44,300 25.286 $11,202 -1.55%
2016-2017 $348,819 $44,300 25.684 $11,378 +4.39%
Permits

Permit information for 50 Union Avenue, Islip, NY

No recently recorded permits for this property.

Neighborhood

Risk

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FEMA flood zones

FEMA flood zones
X

Transportation

Daily traffic map
View daily traffic map

Access the detailed traffic volume map for 50 Union Avenue, Islip, NY 11751 to see estimated average daily traffic on streets surrounding the property as well as the types of properties in its vicinity.

Schools

Nearest elementary schools

Name Rating Type Grade range No of students Distance (miles)
Maud S Sherwood Elementary School 6 Public 2-5 335 0.62
St Mary School NR Private PK-8 413 0.92
St Mary School NR Private PK-8 413 0.92
Wing Elementary School NR Public K-1 379 0.94
Commack Road Elementary School 3 Public 2-5 397 1.25
John F Kennedy Elementary School 5 Public 3-5 450 1.41
St Patrick School NR Private PK-8 534 1.55
St Patrick School NR Private PK-8 534 1.55
Woodhull School NR Public PK, K-6 34 1.58
Woodhull School NR Public PK, K-6 34 1.58
Nearest middle schools

Name Rating Type Grade range No of students Distance (miles)
Islip Middle School 4 Public 6-8 641 0.50
St Mary School NR Private PK-8 413 0.92
St Patrick School NR Private PK-8 534 1.55
Bay Shore Middle School 5 Public 6-8 1,298 2.22
East Islip Middle School 6 Public 6-8 804 2.23
South Middle School 3 Public 6-8 1,033 3.33
MDQ Academy NR Private PK-12 412 3.50
St Peters By The Sea Episcopal Day School NR Private PK, K-8 176 3.52
East Middle School 4 Public 6-8 1,159 3.92
Our Lady Of Providence Regional School NR Private PK-8 251 4.17
Nearest high schools

Name Rating Type Grade range No of students Distance (miles)
Islip High School 9 Public 9-12 892 0.51
Bay Shore Senior High School 5 Public 9-12 1,910 2.14
East Islip High School 8 Public 9-12 1,145 2.28
MDQ Academy NR Private PK-12 412 3.50
Brentwood High School 3 Public 9-12 4,641 3.84
Connetquot Alternative Preschool At Premm NR Public 0 4.63
St John The Baptist Diocesan High School NR Private 9-12 1,335 4.68
Freshman Center NR Public 9 1,247 4.88
Central Islip Senior High School 3 Public 9-12 2,576 4.88
West Islip Senior High School 9 Public 9-12 1,262 4.98

Data provided by GreatSchools.org © 2026. All rights reserved.

Neighbors for 50 Union Avenue, Islip, NY

195 Gibson Ave, Brentwood 70 Fulton St, Brentwood 816 Commack Rd, Brentwood 3 Columbus Ave, Brentwood 104 Cliff Ave, Sayville 44 Magnolia St, Central Islip 29 Warren St, Brentwood 131 Biltmore Ave, Oakdale 1055 Callahan St, Bay Shore 437 Myrtle Ave, West Islip 21 Alice Rd, West Islip 1065 Manor Ln, Bay Shore 185 Norma Ave, West Islip 34 Grenadier Ln, East Islip 6 Arctic St, Bay Shore 40 Brook Ave, Bay Shore 222 Sears Rd, West Islip 1022 Commack Rd, Brentwood 7 Stuyvesant St, Brentwood 150 Brier St, Central Islip

Nearby ZIP codes for 50 Union Avenue, Islip, NY

11702, Suffolk County, NY 11703, Suffolk County, NY 11706, Suffolk County, NY 11716, Suffolk County, NY 11717, Suffolk County, NY 11718, Suffolk County, NY 11722, Suffolk County, NY 11725, Suffolk County, NY 11729, Suffolk County, NY 11730, Suffolk County, NY 11739, Suffolk County, NY 11749, Suffolk County, NY 11752, Suffolk County, NY 11769, Suffolk County, NY 11770, Suffolk County, NY 11779, Suffolk County, NY 11787, Suffolk County, NY 11788, Suffolk County, NY 11795, Suffolk County, NY 11796, Suffolk County, NY

Frequently asked questions

What is the year built for 50 Union Avenue, Islip, NY 11751?

The development at 50 Union Avenue, Islip, NY 11751 was built in 1957.

What is the total square footage of 50 Union Avenue, Islip, NY 11751?

50 Union Avenue, Islip, NY 11751 has a total of 1,898 square feet.

When was 50 Union Avenue, Islip, NY 11751 last sold and what was the sale price?

50 Union Avenue, Islip, NY 11751 was last sold on 10/18/2024 for $739,900.

What is the assessed value of 50 Union Avenue, Islip, NY 11751?

50 Union Avenue, Islip, NY 11751 is currently assessed at $51,800.

What are the property taxes for 50 Union Avenue, Islip, NY 11751?

The property taxes for 50 Union Avenue, Islip, NY 11751 total $16,350.

How many residential units does this building have?

This building has 2 residential unit(s).

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