| Primary address | 21 Washington Street, East Islip |
| Zip code | 11730 |
| County | Suffolk |
| Municipality | Islip |
| Parcel ID | 347-1-1 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Sale date | 09/28/2021 |
| Sale price | $380,000 |
| Arm's length | Register |
| Property tax | $6,262 |
| Building sqft | 931 |
| Building class | One Family Year-Round Residence (210) |
| Acreage | 0.15 |
| Year built | 1925 |
| Zoning district | Register |
| School district | East 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:
21 Washington Street, East Islip, NY 11730 was built in 1925 and has a total of 931 square feet.
What is the assessed value of 21 Washington Street, East Islip, NY 11730 and the property tax paid?Assessed at $22,400, the tax amount paid for 21 Washington Street, East Islip, NY 11730 is $6,262.
When was 21 Washington Street, East Islip, NY 11730 last sold and what was the last sale price?21 Washington Street, East Islip, NY 11730 was last sold in 09/28/2021 for $380,000.
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 21 Washington Street, East Islip, including title documents, transfer conditions, mortgages and liens.
*Here are the three most recent sales for this property.
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 21 Washington Street, East Islip, NY 11730. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.
| Tax year | 2025-2026 |
| Property tax | $6,262 |
| Market value | $315,493 |
| Assessed value | $22,400 |
Here's the assessment & property tax history for 21 Washington Street, East 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 | $315,493 | $22,400 | 26.849 | $6,014 | +2.69% |
| 2023-2024 | $307,692 | $22,400 | 26.145 | $5,856 | +0.84% |
| 2022-2023 | $270,531 | $22,400 | 25.927 | $5,808 | -0.72% |
| 2021-2022 | $241,380 | $22,400 | 26.114 | $5,850 | +2.36% |
| 2020-2021 | $230,928 | $22,400 | 25.513 | $5,715 | -20.34% |
The complete history of permits filed for 21 Washington Street, East 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 21 Washington Street, East 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 21 Washington Street, East 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) |
|---|---|---|---|---|---|
| Chatterbox Day School | NR | Private | PK-1 | 61 | 0.45 |
| Chatterbox Day School | NR | Private | PK-1 | 61 | 0.45 |
| Chatterbox Day School | NR | Private | PK, K-1 | 0 | 0.47 |
| Chatterbox Day School | NR | Private | PK, K-1 | 0 | 0.47 |
| St Mary School | NR | Private | PK-8 | 413 | 0.74 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| St Mary School | NR | Private | PK-8 | 413 | 0.74 |
| East Islip Middle School | 6 | Public | 6-8 | 804 | 0.83 |
| Islip Middle School | 4 | Public | 6-8 | 641 | 1.91 |
| St Patrick School | NR | Private | PK-8 | 534 | 2.76 |
| Oakdale Bohemia Middle School | 6 | Public | 6-8 | 634 | 3.13 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| East Islip High School | 8 | Public | 9-12 | 1,145 | 0.92 |
| Islip High School | 9 | Public | 9-12 | 892 | 1.87 |
| Connetquot Alternative Preschool At Premm | NR | Public | 0 | 3.23 | |
| Bay Shore Senior High School | 5 | Public | 9-12 | 1,910 | 3.46 |
| MDQ Academy | NR | Private | PK-12 | 412 | 3.71 |
Data provided by GreatSchools.org © 2025. All rights reserved.
Here are the neighbors for 21 Washington Street, East Islip.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 620 Keith Ln, West Islip | 01/17/2014 | $380,000 | |
| 150 Cherry Ave, West Sayville | 06/15/2016 | $195,000 | |
| 14 Fairlawn Dr, Central Islip | 1,400 | 10/23/2018 | $309,000 |
| 1470 Hummel Ave, Holbrook | 05/28/2021 | ||
| 334 Wildwood Rd, Ronkonkoma | 11/14/2001 | $217,000 | |
| 568 Spur Dr N, Bay Shore | 2,192 | 06/11/2018 | $435,000 |
| 1595 5th Ave, Bay Shore | 02/21/2018 | $1,375,000 | |
| 101 Root Ave, Islip | 01/25/2025 | ||
| 1539 Islip Ave, Central Islip | 05/30/2012 | $16,866 | |
| 1880 Peck Ave, Bay Shore | 2,160 | 12/23/2020 | $395,000 |
| 309 Bristol CT, Holbrook | 2,191 | 09/05/2019 | $488,000 |
| 12 Omni Ln, Holbrook | 04/17/2024 | $10 | |
| 2 Northwood Blvd, Central Islip | 2,164 | 01/17/2020 | $375,500 |
| 131 Timber Ridge Dr, Holbrook | 09/12/2023 | $470,000 | |
| 210 E Springmeadow Dr, Holbrook | 1,109 | 03/12/2018 | $265,000 |
| 234 Marilynn St, East Islip | 11/20/2023 | ||
| 507 Wicks Rd, Brentwood | 02/28/2005 | $263,300 | |
| 20 Armstrong St, Brentwood | 11/06/2003 | ||
| 128 Tremper St, Holbrook | 01/31/2018 | ||
| 332 Terry Rd, Holbrook | 12/15/2025 | $600,000 |