| Primary address | 644 Sylvan Avenue, Bayport |
| Zip code | 11705 |
| County | Suffolk |
| Municipality | Islip |
| Parcel ID | 309-5-4 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Sale date | 12/11/2020 |
| Sale price | $545,000 |
| Arm's length | Register |
| Property tax | $14,580 |
| Building sqft | 1,407 |
| Building class | One Family Year-Round Residence (210) |
| Acreage | 0.81 |
| Year built | 1960 |
| Zoning district | Register |
| School district | Bayport-Blue Point |
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:
644 Sylvan Avenue, Bayport, NY 11705 was built in 1960 and has a total of 1,407 square feet.
What is the assessed value of 644 Sylvan Avenue, Bayport, NY 11705 and the property tax paid?Assessed at $40,800, the tax amount paid for 644 Sylvan Avenue, Bayport, NY 11705 is $14,579.
When was 644 Sylvan Avenue, Bayport, NY 11705 last sold?644 Sylvan Avenue, Bayport, NY 11705 was last sold in 10/07/2021.
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 644 Sylvan Avenue, Bayport, 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 644 Sylvan Avenue, Bayport, NY 11705. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.
| Tax year | 2025-2026 |
| Property tax | $14,580 |
| Market value | $574,647 |
| Assessed value | $40,800 |
Here's the assessment & property tax history for 644 Sylvan Avenue, Bayport, 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 | $574,647 | $40,800 | 34.203 | $13,955 | +5.25% |
| 2023-2024 | $560,440 | $40,800 | 32.497 | $13,259 | +0.28% |
| 2022-2023 | $492,753 | $40,800 | 32.406 | $13,222 | +2.03% |
| 2021-2022 | $439,655 | $40,800 | 31.76 | $12,958 | +3.62% |
| 2020-2021 | $420,619 | $40,800 | 30.651 | $12,506 | -7.20% |
The complete history of permits filed for 644 Sylvan Avenue, Bayport, 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 644 Sylvan Avenue, Bayport, 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 644 Sylvan Avenue, Bayport 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) |
|---|---|---|---|---|---|
| Sylvan Avenue Elementary School | 7 | Public | PK, K-5 | 306 | 0.09 |
| Sylvan Avenue Elementary School | 7 | Public | PK, K-5 | 306 | 0.09 |
| Blue Point Elementary School | 5 | Public | K-5 | 224 | 0.64 |
| Academy Street Elementary School | 9 | Public | K-5 | 303 | 1.19 |
| Sunrise Drive Elementary School | 6 | Public | K-5 | 374 | 1.37 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| James Wilson Young Middle School | 6 | Public | 6-8 | 398 | 0.16 |
| Holy Angels Regional School | NR | Private | PK, K-8 | 309 | 1.80 |
| South Ocean Middle School | 2 | Public | 6-8 | 599 | 1.91 |
| Emanuel Lutheran School | NR | Private | PK-8 | 97 | 2.09 |
| Sayville Middle School | 7 | Public | 6-8 | 619 | 2.16 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Bayport Blue Point High School | 9 | Public | 9-12 | 664 | 0.92 |
| Sayville High School | 9 | Public | 9-12 | 880 | 2.80 |
| Eastern Suffolk Boces | NR | Public | K-12 | 1,721 | 3.24 |
| Long Island Baptist Academy | NR | Private | 2-12 | 8 | 4.06 |
| Connetquot Alternative Preschool At Premm | NR | Public | 0 | 4.27 |
Data provided by GreatSchools.org © 2025. All rights reserved.
Here are the neighbors for 644 Sylvan Avenue, Bayport.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 80 Barrett Ave, Bayport | 2,452 | 12/04/2020 | $500,000 |
| 194 Union Ave, Islip | 07/14/2004 | $570,000 | |
| 2012 Washington Pl, West Islip | 11/12/2009 | $356,000 | |
| 385 Collington Dr, Ronkonkoma | 1,780 | 09/21/2018 | $405,000 |
| 22 Willoughby Ave, West Islip | 1,691 | 12/10/2020 | $510,000 |
| 48 Roosevelt Ave, Islip | 08/11/2004 | $350,000 | |
| 48 Bushwick Ave, Brentwood | 800 | 09/08/2022 | $326,000 |
| 15 E Elm St, Central Islip | 07/01/2004 | ||
| 24 Apple St, Central Islip | 2,849 | 07/21/2020 | $460,000 |
| 135 Old Post Dr, Hauppauge | 08/19/2004 | $585,000 | |
| 80 Noble St, Brentwood | 08/16/2004 | $342,000 | |
| 15 Cutter CT, West Islip | 3,096 | 11/21/2023 | $1,660,000 |
| 12 Cumberland St, Islip | 1,000 | 10/11/2019 | $400,000 |
| 43 Amuxen CT, Islip | 03/15/2007 | ||
| 656 8th St, Bohemia | 07/14/2011 | ||
| 74 Meroke Ln, East Islip | 930 | 07/11/2017 | $280,000 |
| 615 Oak Neck Rd, West Islip | 984 | 03/13/2020 | $375,000 |
| 158 Acorn Ave, Central Islip | 07/17/2015 | $318,000 | |
| 21 Doolittle St, Brentwood | 04/26/2004 | ||
| 443 Wicks Rd, Brentwood | 08/17/2004 | $298,700 |