| Primary address | 4 21st Avenue, Bay Shore |
| Zip code | 11706 |
| County | Suffolk |
| Municipality | Islip |
| Parcel ID | 246-2-97 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Sale date | 11/21/2017 |
| Sale price | $282,000 |
| Arm's length | Register |
| Property tax | $6,758 |
| Building class | One Family Year-Round Residence (210) |
| Acreage | 0.27 |
| Zoning district | Register |
| School district | Brentwood |
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 $28,800, the tax amount paid for 4 21st Avenue, Bay Shore, NY 11706 is $6,757.
When was 4 21st Avenue, Bay Shore, NY 11706 last sold and what was the last sale price?4 21st Avenue, Bay Shore, NY 11706 was last sold in 11/21/2017 for $282,000.
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 4 21st Avenue, Bay Shore, 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 4 21st Avenue, Bay Shore, NY 11706. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.
| Tax year | 2025-2026 |
| Property tax | $6,758 |
| Market value | $405,634 |
| Assessed value | $28,800 |
Here's the assessment & property tax history for 4 21st Avenue, Bay Shore, 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 | $405,634 | $28,800 | 22.743 | $6,550 | +4.85% |
| 2023-2024 | $395,605 | $28,800 | 21.691 | $6,247 | -0.19% |
| 2022-2023 | $347,826 | $28,800 | 21.733 | $6,259 | +11.91% |
| 2021-2022 | $282,866 | $26,250 | 21.306 | $5,593 | +1.39% |
| 2020-2021 | $270,619 | $26,250 | 21.013 | $5,516 | +4.58% |
The complete history of permits filed for 4 21st Avenue, Bay Shore, 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 4 21st Avenue, Bay Shore, 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 4 21st Avenue, Bay Shore 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) |
|---|---|---|---|---|---|
| Mary G Clarkson School | NR | Public | K-2 | 446 | 0.69 |
| Oak Park Elementary School | 2 | Public | K-5 | 711 | 0.74 |
| Heritage Christian Academy | NR | Private | PK-5 | 41 | 1.10 |
| Heritage Christian Academy | NR | Private | PK-5 | 41 | 1.10 |
| Loretta Park Elementary School | 4 | Public | 1-5 | 646 | 1.22 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Bay Shore Middle School | 5 | Public | 6-8 | 1,298 | 0.82 |
| South Middle School | 3 | Public | 6-8 | 1,033 | 1.05 |
| St Patrick School | NR | Private | PK-8 | 534 | 1.22 |
| MDQ Academy | NR | Private | PK-12 | 412 | 1.52 |
| Islip Middle School | 4 | Public | 6-8 | 641 | 2.15 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Bay Shore Senior High School | 5 | Public | 9-12 | 1,910 | 1.46 |
| Brentwood High School | 3 | Public | 9-12 | 4,641 | 1.48 |
| MDQ Academy | NR | Private | PK-12 | 412 | 1.52 |
| Islip High School | 9 | Public | 9-12 | 892 | 2.09 |
| Freshman Center | NR | Public | 9 | 1,247 | 2.46 |
Data provided by GreatSchools.org © 2025. All rights reserved.
Here are the neighbors for 4 21st Avenue, Bay Shore.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 333 Wildwood Rd, Ronkonkoma | 2,030 | 05/27/2021 | $499,000 |
| 171 Oak Walk, Bay Shore | 12/19/2002 | $125,000 | |
| 17 Westminster Dr, Bohemia | 12/20/2002 | $395,000 | |
| 32 Brook St, Sayville | 12/13/2002 | $250,000 | |
| 22 Orient Ave, Brentwood | 12/10/2002 | ||
| 15 Granby Pl, Ronkonkoma | 11/08/2002 | $250,000 | |
| 73 Brook St, Bay Shore | 12/03/2002 | $135,000 | |
| 148 Nathan Dr, Bohemia | 1,958 | 08/27/2020 | $420,000 |
| 95 Stellenwerf Ave, Islip Terrace | 1,420 | 08/22/2024 | $694,000 |
| 19 Roderick Rd, West Islip | 12/15/2006 | $425,000 | |
| 1349 N Monroe Ave, West Islip | 10/22/2012 | $400,000 | |
| 109 Utica St, Bay Shore | 12/04/2002 | ||
| 95 Smith St, Central Islip | 05/26/2003 | ||
| 50 Carlough Rd, Bohemia | 15,992 | 07/17/2003 | $600,000 |
| 33 Fairdale Dr, Brentwood | 10/15/2014 | $269,000 | |
| 16 Maple CT, Bay Shore | 11/15/2002 | $450,000 | |
| 90 Live Oak Dr, Holbrook | 2,145 | 08/02/2018 | $460,000 |
| 10 Booth St, Central Islip | 09/16/2013 | ||
| 99 Meroke Ln, East Islip | 10/30/2002 | $350,500 | |
| 99 Candee Ave, Sayville | 12/13/2002 | $450,000 |