| Primary address | 40 Union Avenue, Islip |
| Zip code | 11751 |
| County | Suffolk |
| Municipality | Islip |
| Parcel ID | 370-4-18 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Sale date | 07/10/2017 |
| Sale price | $459,000 |
| Arm's length | Register |
| Property tax | $10,732 |
| Building sqft | 1,545 |
| Building class | One Family Year-Round Residence (210) |
| Acreage | 0.13 |
| Year built | 1925 |
| Zoning district | Register |
| School district | Islip |
View more neighborhood information such as transportation, nearby schools and risk designations in the dedicated tab.
Property reports include comprehensive occupancy, improvement and development information (where available).
Create a free account to access valuable data points such as:
40 Union Avenue, Islip, NY 11751 was built in 1925 and has a total of 1,545 square feet.
What is the assessed value of 40 Union Avenue, Islip, NY 11751 and the property tax paid?Assessed at $34,000, the tax amount paid for 40 Union Avenue, Islip, NY 11751 is $10,731.
When was 40 Union Avenue, Islip, NY 11751 last sold and what was the last sale price?40 Union Avenue, Islip, NY 11751 was last sold in 07/10/2017 for $459,000.
View detailed property contacts like owners, building management, representatives from permits and tenants with a free account.
Create a free account to view the complete sales history for 40 Union Avenue, Islip, including title documents, transfer conditions, mortgages and liens.
To view the complete history of deeds, mortgages, assignments of leases and rents, and more, sign up for free. Available data goes back to 1966.
R: Recorded date
D: Document date
Access detailed property tax data for 40 Union Avenue, Islip, NY 11751. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.
| Tax year | 2025-2026 |
| Property tax | $10,732 |
| Market value | $478,873 |
| Assessed value | $34,000 |
Here's the assessment & property tax history for 40 Union Avenue, Islip, including the evolution of the total tax rate and corresponding property tax.
| Year | Market value | Assessment value | Total tax rate | Property tax | Year over year change |
|---|---|---|---|---|---|
| 2024-2025 | $478,873 | $34,000 | 30.486 | $10,365 | +3.73% |
| 2023-2024 | $467,033 | $34,000 | 29.39 | $9,993 | +1.68% |
| 2022-2023 | $410,628 | $34,000 | 28.904 | $9,827 | +0.07% |
| 2021-2022 | $366,379 | $34,000 | 28.884 | $9,821 | +3.07% |
| 2020-2021 | $350,515 | $34,000 | 28.023 | $9,528 | -26.94% |
The complete history of permits filed for 40 Union Avenue, Islip, including new construction or demolition permits, plus any work pertaining to plumbing, heating and sprinkler systems is available with a free account. Available data goes back to 1990.
Create a free account to unlock extended information for 40 Union Avenue, Islip, including whether it's located in FEMA flood zones, floodways or special flood hazard areas, as well as the Coastal barriers resources system area (COBRA).
| FEMA flood zone(s) | X (See more on map) |
Access the detailed traffic volume map for 40 Union Avenue, Islip to see estimated average daily traffic on streets surrounding the property as well as the types of properties in its vicinity.
| View daily traffic map |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Maud S Sherwood Elementary School | 6 | Public | 2-5 | 335 | 0.64 |
| 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 | 0.92 |
| Commack Road Elementary School | 3 | Public | 2-5 | 397 | 1.23 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Islip Middle School | 4 | Public | 6-8 | 641 | 0.49 |
| St Mary School | NR | Private | PK-8 | 413 | 0.92 |
| St Patrick School | NR | Private | PK-8 | 534 | 1.54 |
| Bay Shore Middle School | 5 | Public | 6-8 | 1,298 | 2.20 |
| East Islip Middle School | 6 | Public | 6-8 | 804 | 2.22 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Islip High School | 9 | Public | 9-12 | 892 | 0.50 |
| Bay Shore Senior High School | 5 | Public | 9-12 | 1,910 | 2.13 |
| East Islip High School | 8 | Public | 9-12 | 1,145 | 2.27 |
| MDQ Academy | NR | Private | PK-12 | 412 | 3.48 |
| Brentwood High School | 3 | Public | 9-12 | 4,641 | 3.82 |
Data provided by GreatSchools.org © 2025. All rights reserved.
Here are the neighbors for 40 Union Avenue, Islip.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 78 Lexington Ave, Central Islip | 01/26/1999 | $102,000 | |
| 235 Sherman St, Brentwood | 03/02/1999 | $115,360 | |
| 536 Nostrand Ave, Central Islip | 01/10/2014 | ||
| 131 Church Rd, Great River | 12/05/2013 | $525,000 | |
| 260 Leona St, Holbrook | 12/28/1998 | ||
| 33 Washington St, East Islip | 09/12/2005 | $25,000 | |
| 654 Argosy St, Islip Terrace | 1,913 | 06/22/2018 | $449,300 |
| 2616 Union Blvd, Islip | 08/01/2007 | $450,000 | |
| 440 Smith St, Central Islip | 03/02/1999 | $176,990 | |
| 48 Park Ave, Bay Shore | 06/09/2014 | $530,000 | |
| 44 Stuyvesant Rd, Oakdale | 03/01/1999 | $195,000 | |
| 8 St Andrews Dr, Brentwood | 02/25/1999 | ||
| 119 Brook St, West Sayville | 1,107 | 05/19/2021 | $530,000 |
| 299 W Shore Rd, Oakdale | 09/23/2004 | $350,000 | |
| 1533 Carl Ave, Holbrook | 02/27/1999 | ||
| 3 Division Ave, Central Islip | 03/08/1999 | $47,000 | |
| 26 Race Pl, Oakdale | 12/12/2016 | ||
| 85 Washington Ave, West Sayville | 07/07/2025 | $572,000 | |
| 23 Dale Ln, Hauppauge | 04/09/1999 | ||
| 27 Carey St, East Islip | 02/13/2025 |