| Primary address | 18 Chelsea Drive, Syosset |
| Zip code | 11791 |
| County | Nassau |
| Town/City | Oyster Bay |
| Village (swiss code) | None (unincorporated town) |
| Parcel ID | 25-33-6 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Building sqft | 2,492 |
| Building class | One Family Year - Round Residence (210.01) |
| Land | Primary site |
| Topography | Level |
| Acreage | 0.515 |
| Buildings on lot | 1 |
| Year built | 1958 |
| Stories | 1 |
| Style | Ranch |
| Rooms | 7 |
| Bathrooms | 3 |
| Half bathrooms | 1 |
| Attic | None |
| Basement | Full |
| Exterior wall | Brick |
| Heating type | Central/AC |
| Heating system | Central w ac |
| Fireplace | 1 |
| 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:
18 Chelsea Drive, Syosset, NY 11791 was built in 1958 and has a total of 2,492 square feet.
What is the assessed value of 18 Chelsea Drive, Syosset, NY 11791 and the property tax paid?Assessed at $858, the tax amount paid for 18 Chelsea Drive, Syosset, NY 11791 is $26,981.
When was 18 Chelsea Drive, Syosset, NY 11791 last sold and what was the last sale price?18 Chelsea Drive, Syosset, NY 11791 was last sold in 06/14/2019 for $988,000.
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 18 Chelsea Drive, 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 18 Chelsea Drive, Syosset, NY 11791. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.
| Tax year | 2026 |
| Base tax | $26,982 |
| Current property tax | $26,321 |
| Tax class | Register |
| Market value | $858,000 |
| Assessed value | $858 |
Here's the assessment & property tax history for 18 Chelsea Drive, 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 | $858,000 | $858 | 3144.736 | $26,982 | +3.80% |
| 2025 | $858,000 | $858 | 3029.48 | $25,993 | -4.94% |
| 2024 | $949,000 | $844 | 3239.864 | $27,344 | -13.91% |
| 2023 | $945,000 | $945 | 3361.225 | $31,764 | -8.99% |
| 2022 | $949,000 | $949 | 3677.723 | $34,902 | -14.41% |
The complete history of permits filed for 18 Chelsea Drive, 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 18 Chelsea Drive, 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 18 Chelsea Drive, 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) |
|---|---|---|---|---|---|
| The Center For Developmental Disabilities | NR | Private | 105 | 0.27 | |
| Berry Hill Elementary School | 8 | Public | K-5 | 450 | 0.44 |
| P.S. 256 | NR | Public | PK, K-12 | 500 | 0.82 |
| P.S. 256 | NR | Public | PK, K-12 | 500 | 0.82 |
| Village Elementary School | 9 | Public | K-5 | 415 | 1.07 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| South Woods Middle School | 8 | Public | 6-8 | 746 | 0.17 |
| The Center For Developmental Disabilities | NR | Private | 105 | 0.27 | |
| P.S. 256 | NR | Public | PK, K-12 | 500 | 0.82 |
| St Edward Confessor School | NR | Private | PK-8 | 265 | 1.30 |
| East Woods School | NR | Private | PK, K-8 | 226 | 1.70 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| The Center For Developmental Disabilities | NR | Private | 105 | 0.27 | |
| Syosset Senior High School | 10 | Public | 9-12 | 2,266 | 0.31 |
| Our Lady Of Mercy Academy | NR | Private | 9-12 | 359 | 0.75 |
| P.S. 256 | NR | Public | PK, K-12 | 500 | 0.82 |
| Fusion Academy Woodbury Ny | NR | Private | 6-12 | 75 | 1.77 |
Data provided by GreatSchools.org © 2025. All rights reserved.
Here are the neighbors for 18 Chelsea Drive, Syosset.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 7 Calvert Dr, Syosset | 1,957 | ||
| 1 Salem CT, Syosset | 2,935 | 11/10/2016 | $972,500 |
| 24 Narcissus Dr, Syosset | 3,202 | 08/14/2023 | $1,800,000 |
| 14 Wisteria Pl, Syosset | 2,081 | ||
| 5 Salem CT, Syosset | 2,508 | ||
| 18 Narcissus Dr, Syosset | 2,615 | 09/28/1998 | $387,000 |
| 20 Narcissus Dr, Syosset | 2,762 | 03/12/2020 | $1,536,120 |
| 3 Lilac Dr, Syosset | 1,944 | 08/28/2014 | $575,000 |
| 11 Calvert Dr, Syosset | 4,489 | 01/22/2010 | $1,576,280 |
| 6 Calvert Dr, Syosset | 4,097 | 10/20/2000 | $532,000 |
| 8 Calvert Dr, Syosset | 2,386 | 12/18/1998 | $355,000 |
| 22 Narcissus Dr, Syosset | 1,956 | 10/21/2014 | |
| 3 Salem CT, Syosset | 2,218 | 11/13/1995 | $355,000 |
| 4 Calvert Dr, Syosset | 2,925 | 05/15/2024 | |
| 10 Calvert Dr, Syosset | 3,460 | 11/28/2005 | $857,000 |
| 2 Calvert Dr, Syosset | 2,359 | 06/09/1995 | $292,000 |
| 20 Chelsea Dr, Syosset | 1,953 | 12/09/2011 | $692,500 |
| 9 Calvert Dr, Syosset | 2,999 | 08/13/2014 | $1,238,000 |
| 16 Narcissus Dr, Syosset | 1,941 | 09/27/2018 | $899,000 |
| 26 Narcissus Dr, Syosset | 2,775 | 12/21/2011 | $530,000 |