| Primary address | 40 21st Avenue, Bay Shore |
| Zip code | 11706 |
| County | Suffolk |
| Municipality | Islip |
| Parcel ID | 246-3-88 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Sale date | 07/31/2019 |
| Sale price | $335,000 |
| Arm's length | Register |
| Property tax | $7,438 |
| 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 $31,700, the tax amount paid for 40 21st Avenue, Bay Shore, NY 11706 is $7,438.
When was 40 21st Avenue, Bay Shore, NY 11706 last sold and what was the last sale price?40 21st Avenue, Bay Shore, NY 11706 was last sold in 07/31/2019 for $335,000.
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 21st Avenue, Bay Shore, 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 40 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 | $7,438 |
| Market value | $446,479 |
| Assessed value | $31,700 |
Here's the assessment & property tax history for 40 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 |
|---|---|---|---|---|---|
| 2025-2026 | $446,479 | $31,700 | 23.465 | $7,438 | +3.17% |
| 2024-2025 | $446,479 | $31,700 | 22.743 | $7,210 | +4.85% |
| 2023-2024 | $435,440 | $31,700 | 21.691 | $6,876 | -0.19% |
| 2022-2023 | $382,850 | $31,700 | 21.733 | $6,889 | +2.00% |
| 2021-2022 | $341,595 | $31,700 | 21.306 | $6,754 | +1.39% |
The complete history of permits filed for 40 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 40 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 40 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 (miles) |
|---|---|---|---|---|---|
| Oak Park Elementary School | 2 | Public | K-5 | 711 | 0.74 |
| Mary G Clarkson School | NR | Public | K-2 | 446 | 0.90 |
| Loretta Park Elementary School | 4 | Public | 1-5 | 646 | 0.97 |
| Laurel Park Elementary School | 3 | Public | 1-5 | 665 | 0.97 |
| Southeast Elementary School | 5 | Public | 1-5 | 566 | 1.18 |
| Name | Rating | Type | Grade range | No of students | Distance (miles) |
|---|---|---|---|---|---|
| Bay Shore Middle School | 5 | Public | 6-8 | 1,298 | 0.95 |
| South Middle School | 3 | Public | 6-8 | 1,033 | 1.01 |
| St Patrick School | NR | Private | PK-8 | 534 | 1.22 |
| MDQ Academy | NR | Private | PK-12 | 412 | 1.40 |
| Islip Middle School | 4 | Public | 6-8 | 641 | 2.05 |
| Name | Rating | Type | Grade range | No of students | Distance (miles) |
|---|---|---|---|---|---|
| MDQ Academy | NR | Private | PK-12 | 412 | 1.40 |
| Brentwood High School | 3 | Public | 9-12 | 4,641 | 1.48 |
| Bay Shore Senior High School | 5 | Public | 9-12 | 1,910 | 1.58 |
| Islip High School | 9 | Public | 9-12 | 892 | 1.99 |
| Freshman Center | NR | Public | 9 | 1,247 | 2.50 |
Data provided by GreatSchools.org © 2025. All rights reserved.
Here are the neighbors for 40 21st Avenue, Bay Shore.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 4 Alden Rd, Brentwood | 1,488 | 07/10/2018 | $315,180 |
| 114 Southern Blvd, Hauppauge | 02/04/2015 | ||
| 61 Meadow Brook Dr, Brentwood | 2,468 | 04/25/2022 | $470,000 |
| 420 Earle St, Central Islip | 11/09/2017 | ||
| 1430 Ferndale Blvd, Central Islip | 1,580 | 06/30/2020 | $285,000 |
| 247 Claywood Dr, Brentwood | 01/19/2007 | $360,400 | |
| 436 8th St, Bohemia | 03/21/2002 | ||
| 179 Anisko Ldg, Oakdale | 08/23/1995 | ||
| 230 Tree Ave, Central Islip | 2,014 | 09/28/2018 | $375,000 |
| 23 Cyprus Ave, Brentwood | 05/14/2013 | $250,000 | |
| 245 W Main St, Bay Shore | 02/26/2008 | $600,000 | |
| 301 Ellery St, Brentwood | 1,428 | 07/20/2020 | $415,000 |
| 7 Cutter CT, West Islip | 10/12/1995 | $270,000 | |
| 102 Suydam Ln, Bayport | 05/13/2024 | ||
| 379 Peconic St, Ronkonkoma | 02/23/2004 | $335,000 | |
| 130 Juniper Ave, Ronkonkoma | 1,884 | 10/04/2019 | $365,000 |
| 1428 Brooklyn Blvd, Bay Shore | 07/24/2013 | ||
| 1407 N Windsor Ave, Bay Shore | 09/30/2003 | $287,000 | |
| 18 Blacker St, Brentwood | 02/01/2012 | ||
| 151 Front Ave, Brentwood | 886 | 11/25/2020 | $372,000 |