| Primary address | 20 Gladstone Avenue, West Islip |
| Zip code | 11795 |
| County | Suffolk |
| Municipality | Islip |
| Parcel ID | 468-5-32 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Sale date | 09/20/2000 |
| Sale price | $145,000 |
| Arm's length | Register |
| Current property tax | $9,932 |
| Building class | One Family Year-Round Residence (210) |
| Acreage | 0.32 |
| Zoning district | Register |
| School district | West 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 $37,150, the tax amount paid for 20 Gladstone Avenue, West Islip, NY 11795 is $10,759.
When was 20 Gladstone Avenue, West Islip, NY 11795 last sold and what was the last sale price?20 Gladstone Avenue, West Islip, NY 11795 was last sold in 09/20/2000 for $145,000.
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 20 Gladstone Avenue, West Islip, including title documents, transfer conditions, mortgages and liens.
| Purchase date | Purchase price | Buyer name | Seller name |
|---|---|---|---|
| 09/20/2000 | $145,000 | Register | Register |
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 20 Gladstone Avenue, West Islip, NY 11795. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.
| Tax year | 2025-2026 |
| Base tax | $10,760 |
| Current property tax | $9,932 |
| Market value | $523,239 |
| Assessed value | $37,150 |
Here's the assessment & property tax history for 20 Gladstone Avenue, West 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 | $523,239 | $37,150 | 27.624 | $10,262 | +3.86% |
| 2023-2024 | $510,302 | $37,150 | 26.598 | $9,881 | +1.06% |
| 2022-2023 | $448,671 | $37,150 | 26.319 | $9,778 | +0.07% |
| 2021-2022 | $400,324 | $37,150 | 26.301 | $9,771 | +2.12% |
| 2020-2021 | $382,990 | $37,150 | 25.754 | $9,568 | -23.63% |
The complete history of permits filed for 20 Gladstone Avenue, West 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 20 Gladstone Avenue, West 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 20 Gladstone Avenue, West 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) |
|---|---|---|---|---|---|
| Bridges Academy (The) | NR | Private | PK-8 | 211 | 0.41 |
| Bridges Academy (The) | NR | Private | PK-8 | 211 | 0.41 |
| The Bridges Academy | NR | Private | PK, K-8 | 0 | 0.46 |
| The Bridges Academy | NR | Private | PK, K-8 | 0 | 0.46 |
| Bayview Elementary School | 3 | Public | PK, K-5 | 410 | 0.59 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Bridges Academy (The) | NR | Private | PK-8 | 211 | 0.41 |
| The Bridges Academy | NR | Private | PK, K-8 | 0 | 0.46 |
| St Peters By The Sea Episcopal Day School | NR | Private | PK, K-8 | 176 | 0.80 |
| Beach Street Middle School | 6 | Public | 6-8 | 405 | 0.84 |
| South Bay Jr Academy Of Sda | NR | Private | PK-8 | 56 | 1.98 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| St John The Baptist Diocesan High School | NR | Private | 9-12 | 1,335 | 0.40 |
| West Islip Senior High School | 9 | Public | 9-12 | 1,262 | 0.81 |
| Babylon Junior Senior High School | 5 | Public | 7-12 | 703 | 1.99 |
| North Babylon High School | 6 | Public | 9-12 | 1,506 | 2.72 |
| Bay Shore Senior High School | 5 | Public | 9-12 | 1,910 | 2.82 |
Data provided by GreatSchools.org © 2025. All rights reserved.
Here are the neighbors for 20 Gladstone Avenue, West Islip.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 93 Woodlawn Ave, Ronkonkoma | 04/12/2005 | ||
| 845 Marconi Ave, Ronkonkoma | 7,500 | 10/30/2018 | $1,175,000 |
| 13 Peters Blvd, Central Islip | 07/26/2024 | ||
| 383 Bernice Dr, Bayport | 08/14/2003 | $333,000 | |
| 513 Pine Dr, Bay Shore | 1,913 | 10/19/2020 | $415,000 |
| 60 Fleetwood CT, Ronkonkoma | 15,227 | 05/09/2024 | $2,400,000 |
| 10 Brightside Ave, Central Islip | 1,336 | 09/25/2019 | $275,000 |
| 59 Brook St, Bay Shore | 1,521 | 06/11/2022 | $460,000 |
| 29 S Saxon Ave, Bay Shore | 2,178 | 03/14/2018 | $315,000 |
| 34 E Halley Ln, Central Islip | 06/18/2004 | $215,000 | |
| 249 Sunrise Ave, Sayville | 09/26/2001 | $286,500 | |
| 57 Avis Dr, Holbrook | 1,740 | 08/31/2020 | |
| 704 Myrtle Ave, West Islip | 672 | 07/28/2021 | $410,000 |
| 127 Acorn Ave, Central Islip | 1,486 | 09/09/2020 | |
| 835 Marconi Ave, Ronkonkoma | 8,650 | 03/13/2001 | |
| 120 Buffalo Ave, Islip | 1,144 | 05/22/2017 | |
| 45 Pembroke CT, Bay Shore | 2,847 | 02/14/2018 | $355,000 |
| 108 E Bayberry Rd, Islip | 07/11/2012 | $962,500 | |
| 146 Raleigh Ln, West Islip | 11/13/2000 | $236,000 | |
| 124 Stacom St, Brentwood | 01/05/2004 |