| Primary address | 517 Islip Avenue, Islip |
| Zip code | 11751 |
| County | Suffolk |
| Municipality | Islip |
| Parcel ID | 272-1-50 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Current property tax | $9,088 |
| Building class | One Family Year-Round Residence (210) |
| Acreage | 0.28 |
| 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:
Assessed at $40,900, the tax amount paid for 517 Islip Avenue, Islip, NY 11751 is $12,909.
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 517 Islip Avenue, Islip, including title documents, transfer conditions, mortgages and liens.
Access detailed property tax data for 517 Islip Avenue, Islip, NY 11751. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.
| Tax year | 2025-2026 |
| Base tax | $12,910 |
| Current property tax | $9,088 |
| Market value | $576,057 |
| Assessed value | $40,900 |
Here's the assessment & property tax history for 517 Islip 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 | $576,057 | $40,900 | 30.486 | $12,469 | +3.73% |
| 2023-2024 | $561,813 | $40,900 | 29.39 | $12,021 | +1.68% |
| 2022-2023 | $493,961 | $40,900 | 28.904 | $11,822 | +5.49% |
| 2021-2022 | $418,104 | $38,800 | 28.884 | $11,207 | +3.07% |
| 2020-2021 | $400,000 | $38,800 | 28.023 | $10,873 | -26.94% |
The complete history of permits filed for 517 Islip 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 517 Islip 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 517 Islip 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) |
|---|---|---|---|---|---|
| Wing Elementary School | NR | Public | K-1 | 379 | 0.65 |
| Commack Road Elementary School | 3 | Public | 2-5 | 397 | 0.76 |
| Ruth C Kinney Elementary School | 7 | Public | 3-5 | 302 | 1.27 |
| Loretta Park Elementary School | 4 | Public | 1-5 | 646 | 1.30 |
| Laurel Park Elementary School | 3 | Public | 1-5 | 665 | 1.36 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| East Islip Middle School | 6 | Public | 6-8 | 804 | 1.38 |
| St Mary School | NR | Private | PK-8 | 413 | 1.58 |
| Islip Middle School | 4 | Public | 6-8 | 641 | 1.66 |
| St Patrick School | NR | Private | PK-8 | 534 | 1.99 |
| MDQ Academy | NR | Private | PK-12 | 412 | 2.39 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| East Islip High School | 8 | Public | 9-12 | 1,145 | 1.34 |
| Islip High School | 9 | Public | 9-12 | 892 | 1.58 |
| MDQ Academy | NR | Private | PK-12 | 412 | 2.39 |
| Bay Shore Senior High School | 5 | Public | 9-12 | 1,910 | 2.73 |
| Brentwood High School | 3 | Public | 9-12 | 4,641 | 2.93 |
Data provided by GreatSchools.org © 2025. All rights reserved.
Here are the neighbors for 517 Islip Avenue, Islip.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 75 Beaverdam Rd, Islip | |||
| 516 Islip Ave, Islip | 06/06/2014 | $10 | |
| 40 Juniper St, Islip | 1,104 | 08/02/2016 | $324,900 |
| 98 Beech St, Islip | |||
| 442 Ferndale Blvd, Islip | |||
| 527 Islip Ave, Islip | |||
| 15 Beaverdam Rd, Islip | |||
| 531 Islip Ave, Islip | 1,686 | 12/01/2020 | $370,000 |
| 529 Islip Ave, Islip | 11/30/2022 | $495,000 | |
| 518 Islip Ave, Islip | 07/21/2015 | $285,000 | |
| 523 Islip Ave, Islip | 1,384 | 11/17/2021 | $340,000 |
| 26 Birch St, Islip | 1,272 | 12/19/2018 | |
| 35 Beaverdam Rd, Islip | 09/03/2019 | ||
| 67 Beech St, Islip | 2,244 | 04/25/2017 | $315,000 |
| 438 Ferndale Blvd, Islip | |||
| 32 Birch St, Islip | |||
| 10 Beech St, Islip | 10,750 | ||
| 90 Beech St, Islip | 08/18/2014 | $329,000 | |
| 390 Ferndale Blvd, Islip | 2,341 | 11/21/2017 | $453,200 |
| 406 Ferndale Blvd, Islip |