| Primary address | 28 Treadwell Avenue, Syosset |
| Zip code | 11791 |
| County | Nassau |
| Town/City | Oyster Bay |
| Village (swiss code) | None (unincorporated town) |
| Parcel ID | 15-12-128 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Building sqft | 1,224 |
| Building class | Two Family Year - Round Residence (220.01) |
| Land | Primary site |
| Topography | Level |
| Acreage | 0.115 |
| Buildings on lot | 1 |
| Year built | 1918 |
| Stories | 2 |
| Style | Old Style |
| Rooms | 8 |
| Bathrooms | 2 |
| Attic | None |
| Basement | Full |
| Exterior wall | Asbestos |
| Heating type | Central |
| Heating system | Hot water |
| Zoning district | Register (See more on map) |
| School district | Syosset |
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:
28 Treadwell Avenue, Syosset, NY 11791 was built in 1918 and has a total of 1,224 square feet.
What is the assessed value of 28 Treadwell Avenue, Syosset, NY 11791 and the property tax paid?Assessed at $489, the tax amount paid for 28 Treadwell Avenue, Syosset, NY 11791 is $15,758.
When was 28 Treadwell Avenue, Syosset, NY 11791 last sold and what was the last sale price?28 Treadwell Avenue, Syosset, NY 11791 was last sold in 03/02/2026 for $760,000.
How many residential units does this building have?This building has 2 residential unit(s).
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 28 Treadwell Avenue, Syosset, 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 28 Treadwell Avenue, Syosset, NY 11791. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.
| Tax year | 2026 |
| Base tax | $15,759 |
| Current property tax | $15,802 |
| Tax class | Register |
| Market value | $489,000 |
| Assessed value | $489 |
Here's the assessment & property tax history for 28 Treadwell Avenue, Syosset, 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 |
|---|---|---|---|---|---|
| 2026 | $489,000 | $489 | 3222.634 | $15,759 | +1.89% |
| 2025 | $498,000 | $498 | 3105.677 | $15,466 | -8.54% |
| 2024 | $509,000 | $509 | 3322.462 | $16,911 | -0.83% |
| 2023 | $494,000 | $494 | 3452.063 | $17,053 | -11.26% |
| 2022 | $509,000 | $509 | 3775.603 | $19,218 | -6.46% |
The complete history of permits filed for 28 Treadwell Avenue, Syosset, 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 28 Treadwell Avenue, Syosset, 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 28 Treadwell Avenue, Syosset 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) |
|---|---|---|---|---|---|
| St Edward Confessor School | NR | Private | PK-8 | 265 | 0.37 |
| St Edward Confessor School | NR | Private | PK-8 | 265 | 0.37 |
| Village Elementary School | 9 | Public | K-5 | 415 | 0.49 |
| Berry Hill Elementary School | 8 | Public | K-5 | 450 | 0.97 |
| P.S. 256 | NR | Public | PK, K-12 | 500 | 0.99 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| St Edward Confessor School | NR | Private | PK-8 | 265 | 0.37 |
| P.S. 256 | NR | Public | PK, K-12 | 500 | 0.99 |
| South Woods Middle School | 8 | Public | 6-8 | 746 | 1.18 |
| The Center For Developmental Disabilities | NR | Private | 105 | 1.49 | |
| H B Thompson Middle School | 9 | Public | 6-8 | 997 | 1.51 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| P.S. 256 | NR | Public | PK, K-12 | 500 | 0.99 |
| Our Lady Of Mercy Academy | NR | Private | 9-12 | 359 | 1.20 |
| Syosset Senior High School | 10 | Public | 9-12 | 2,266 | 1.29 |
| The Center For Developmental Disabilities | NR | Private | 105 | 1.49 | |
| Fusion Academy Woodbury Ny | NR | Private | 6-12 | 75 | 1.63 |
Data provided by GreatSchools.org © 2025. All rights reserved.
Here are the neighbors for 28 Treadwell Avenue, Syosset.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 47 Roosevelt Ave, Syosset | 1,541 | 03/25/2024 | |
| 108-114 Jackson Ave, Syosset | 11,410 | 09/24/2007 | $826,000 |
| 41 Roosevelt Ave, Syosset | 2,884 | 04/23/2025 | |
| 35 Roosevelt Ave, Syosset | 2,848 | 08/03/2001 | $540,000 |
| 10 Treadwell St, Syosset | 2,054 | ||
| 18 Tredwell Ave, Syosset | 1,888 | 08/14/2023 | |
| 90 Underhill Blvd, Syosset | 1,682 | 08/11/2014 | |
| 106 Unerhill Rd, Syosset | 1,585 | 01/28/2016 | |
| 40 Underhill Blvd, Syosset | 13,113 | 01/13/2025 | $2,100,000 |
| 50 Underhill Blvd, Syosset | 12,630 | 11/30/2018 | $1,900,000 |
| 55 Roosevelt Ave, Syosset | 1,467 | 07/10/1992 | |
| 43 Roosevelt Ave, Syosset | 3,080 | 04/27/2023 | $1,249,000 |
| 49 Roosevelt Ave, Syosset | 1,160 | 06/08/2018 | $529,000 |
| 70 Roosevelt Ave, Syosset | 1,900 | 12/10/2015 | $670,000 |
| 30 Underhill Blvd, Syosset | 1,566 | 01/15/2026 | $1,540,000 |
| 61 Richmond St, Syosset | 1,500 | 09/08/1997 | |
| 12 Tredwell Ave, Syosset | 2,054 | 08/22/2019 | $635,000 |
| 19 Richmond St, Syosset | 3,090 | 01/25/2007 | $514,100 |
| 59 Roosevelt Ave, Syosset | 2,288 | 08/11/1997 | |
| 51 Roosevelt Ave, Syosset | 1,294 | 03/11/2022 | $710,000 |