| Primary address | 21 Wisconsin Avenue, Bay Shore |
| Zip code | 11706 |
| County | Suffolk |
| Municipality | Islip |
| Parcel ID | 201-2-30 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Sale date | 03/30/2026 |
| Sale price | $430,543 |
| Arm's length | Register |
| Property tax | $6,758 |
| Building sqft | 1,224 |
| Building class | One Family Year-Round Residence (210) |
| Acreage | 0.45 |
| Year built | 1955 |
| 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:
21 Wisconsin Avenue, Bay Shore, NY 11706 was built in 1955 and has a total of 1,224 square feet.
What is the assessed value of 21 Wisconsin Avenue, Bay Shore, NY 11706 and the property tax paid?Assessed at $28,800, the tax amount paid for 21 Wisconsin Avenue, Bay Shore, NY 11706 is $6,757.
When was 21 Wisconsin Avenue, Bay Shore, NY 11706 last sold and what was the last sale price?21 Wisconsin Avenue, Bay Shore, NY 11706 was last sold in 03/30/2026 for $430,543.
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 Wisconsin 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 21 Wisconsin 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 21 Wisconsin 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 | $405,634 | $28,800 | 23.465 | $6,758 | +3.17% |
| 2024-2025 | $405,634 | $28,800 | 22.743 | $6,550 | +4.85% |
| 2023-2024 | $395,604 | $28,800 | 21.691 | $6,247 | -0.19% |
| 2022-2023 | $347,826 | $28,800 | 21.733 | $6,259 | +2.00% |
| 2021-2022 | $310,345 | $28,800 | 21.306 | $6,136 | +1.39% |
The complete history of permits filed for 21 Wisconsin 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 21 Wisconsin 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 21 Wisconsin 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) |
|---|---|---|---|---|---|
| Oak Park Elementary School | 2 | Public | K-5 | 711 | 0.40 |
| Hemlock Elementary School | 3 | Public | K-5 | 617 | 0.94 |
| MDQ Academy | NR | Private | PK-12 | 412 | 1.17 |
| MDQ Academy | NR | Private | PK-12 | 412 | 1.17 |
| Mary G Clarkson School | NR | Public | K-2 | 446 | 1.27 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| South Middle School | 3 | Public | 6-8 | 1,033 | 0.61 |
| MDQ Academy | NR | Private | PK-12 | 412 | 1.17 |
| Bay Shore Middle School | 5 | Public | 6-8 | 1,298 | 1.55 |
| Freshman Center | NR | Public | 9 | 1,247 | 1.65 |
| East Middle School | 4 | Public | 6-8 | 1,159 | 1.89 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Brentwood High School | 3 | Public | 9-12 | 4,641 | 0.79 |
| MDQ Academy | NR | Private | PK-12 | 412 | 1.17 |
| Freshman Center | NR | Public | 9 | 1,247 | 1.65 |
| Bay Shore Senior High School | 5 | Public | 9-12 | 1,910 | 2.15 |
| Ascent School for Individuals With Autism | NR | Private | 4-12 | 24 | 2.62 |
Data provided by GreatSchools.org © 2025. All rights reserved.
Here are the neighbors for 21 Wisconsin Avenue, Bay Shore.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 10 E Oakdale St, Bay Shore | 12/23/2015 | $400,000 | |
| 51 Matinecock Ave, East Islip | 11/20/2025 | $1,190,000 | |
| 12 Burleigh Dr, Holbrook | 11/17/2011 | $410,000 | |
| 139 Wagstaff Ln, West Islip | 4,064 | 02/15/2022 | $1,368,600 |
| 412 Elmwood St, Islip Terrace | 05/11/2023 | $205,000 | |
| 900 Liberty St, Bohemia | 07/22/2005 | ||
| 65 Paulanna Ave, Bayport | 07/31/2015 | ||
| 735 Sylvan Ave, Bayport | 03/10/2003 | ||
| 19 Arlene Dr, Brentwood | 1,958 | 04/23/2019 | $458,850 |
| 415 Lakeview Ave, Bayport | 06/04/2002 | $245,000 | |
| 7 Willow St, Central Islip | 09/02/2004 | $282,150 | |
| 529 Prospect Ave, Central Islip | 06/23/2003 | ||
| 67 Glenmere Way, Holbrook | 08/02/2023 | $570,000 | |
| 415 Myrtle Ave, West Islip | 08/20/1993 | $135,000 | |
| 31 Viking Dr, West Islip | 08/11/1993 | $656,000 | |
| 17 Sunny Ln, Bay Shore | 12/15/2017 | $125,000 | |
| 37 Meroke Ln, East Islip | 08/23/1993 | $120,000 | |
| 21 The Helm, East Islip | 04/28/2023 | $1,575,000 | |
| 128 Preston St, Brentwood | 1,706 | 07/09/2018 | $375,000 |
| 1750 Brentwood Rd, Brentwood | 08/19/1993 | $150,000 |