| Primary address | 20 William Street, Bethpage |
| Zip code | 11714 |
| County | Nassau |
| Town/City | Oyster Bay |
| Village (swiss code) | None (unincorporated town) |
| Parcel ID | 49-103-239 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Building sqft | 1,050 |
| Building class | One Family Year - Round Residence (210.01) |
| Land | Primary site |
| Topography | Level |
| Acreage | 0.176 |
| Buildings on lot | 1 |
| Year built | 1963 |
| Stories | 1 |
| Style | Ranch |
| Rooms | 6 |
| Bathrooms | 1 |
| Half bathrooms | 1 |
| Attic | None |
| Basement | Full |
| Exterior wall | Asbestos |
| Heating type | Central/AC |
| Heating system | Central w ac |
| Zoning district | Register (See more on map) |
| School district | Bethpage UFSD |
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:
20 William Street, Bethpage, NY 11714 was built in 1963 and has a total of 1,050 square feet.
What is the assessed value of 20 William Street, Bethpage, NY 11714 and the property tax paid?Assessed at $454, the tax amount paid for 20 William Street, Bethpage, NY 11714 is $13,124.
When was 20 William Street, Bethpage, NY 11714 last sold and what was the last sale price?20 William Street, Bethpage, NY 11714 was last sold in 09/28/2021 for $550,000.
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Create a free account to view the complete sales history for 20 William Street, Bethpage, 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 20 William Street, Bethpage, NY 11714. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.
| Tax year | 2026 |
| Property tax | $13,124 |
| Tax class | Register |
| Market value | $454,000 |
| Assessed value | $454 |
Here's the assessment & property tax history for 20 William Street, Bethpage, 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 | $454,000 | $454 | 2890.822 | $13,124 | +3.56% |
| 2025 | $454,000 | $454 | 2791.466 | $12,673 | -6.44% |
| 2024 | $454,435 | $454 | 2983.684 | $13,546 | -4.90% |
| 2023 | $454,000 | $454 | 3137.495 | $14,244 | -10.69% |
| 2022 | $454,000 | $454 | 3513.053 | $15,949 | -10.15% |
The complete history of permits filed for 20 William Street, Bethpage, 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 20 William Street, Bethpage, 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 20 William Street, Bethpage 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) |
|---|---|---|---|---|---|
| Central Boulevard Elementary School | 5 | Public | K-5 | 533 | 0.40 |
| John H West School | 7 | Public | K-5 | 482 | 1.15 |
| Island Trees Middle School | 7 | Public | 5-8 | 657 | 1.18 |
| Michael F Stokes School | 8 | Public | 2-4 | 506 | 1.25 |
| J Fred Sparke School | NR | Public | PK, K-1 | 292 | 1.37 |
| Name | Rating | Type | Grade range | No of students | Distance (miles) |
|---|---|---|---|---|---|
| Plainedge Middle School | 6 | Public | 6-8 | 663 | 0.50 |
| John F Kennedy Middle School | 8 | Public | 6-8 | 717 | 1.07 |
| Island Trees Middle School | 7 | Public | 5-8 | 657 | 1.18 |
| St John Baptist De Lasalle Regional School | NR | Private | PK, K-8 | 214 | 1.94 |
| The Elija School | NR | Private | 31 | 2.00 |
| Name | Rating | Type | Grade range | No of students | Distance (miles) |
|---|---|---|---|---|---|
| Island Trees High School | 9 | Public | 9-12 | 727 | 1.08 |
| Bethpage Senior High School | 9 | Public | 9-12 | 932 | 1.44 |
| The Elija School | NR | Private | 31 | 2.00 | |
| New Jerusalem Christian Academy | NR | Private | 1-12 | 20 | 2.32 |
| Plainedge Senior High School | 8 | Public | 9-12 | 845 | 2.40 |
Data provided by GreatSchools.org © 2025. All rights reserved.
Here are the neighbors for 20 William Street, Bethpage.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 143 Broadway, Bethpage | 1,979 | 08/29/2001 | $300,000 |
| 24 William St, Bethpage | 1,552 | 08/29/2012 | $377,500 |
| 28 William St, Bethpage | 2,064 | 03/11/2002 | |
| 328 Stewart Ave, Bethpage | 2,600 | 07/31/2020 | $650,000 |
| 16 William St, Bethpage | 1,550 | 12/09/2003 | |
| 137 Broadway, Bethpage | 1,470 | 02/18/2022 | $695,000 |
| 141 Broadway, Bethpage | 1,136 | 07/29/1998 | $165,000 |
| 29 Russell Ave, Bethpage | 2,785 | 12/29/2011 | $625,000 |
| 22 Williams St, Bethpage | 1,050 | 11/15/2002 | |
| 27 Russell Ave, Bethpage | 1,120 | 09/29/2020 | $489,000 |
| 18 William St, Bethpage | 2,040 | 05/31/2024 | |
| 12 William St, Bethpage | 1,899 | 01/06/2022 | |
| 145 Broadway, Bethpage | 1,163 | 07/13/2001 | $237,000 |
| 147 Broadway, Bethpage | 1,550 | 02/04/2015 | $450,000 |
| 25 Russell Ave, Bethpage | 1,120 | 08/30/2010 | |
| 14 William St, Bethpage | 1,606 | 01/17/2003 | $320,000 |
| 30 William St, Bethpage | 1,674 | ||
| 26 William St, Bethpage | 1,752 | 10/31/2002 | $380,000 |
| 338 Stewart Ave, Bethpage | 2,178 | 02/03/2026 | $865,000 |
| 10 William St, Bethpage | 1,899 | 05/05/2016 |