| Primary address | 23 William Street, Valley Stream |
| Zip code | 11580 |
| County | Nassau |
| Town/City | Hempstead |
| Village (swiss code) | None (unincorporated town) |
| Parcel ID | 37-485-229 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Building sqft | 1,177 |
| Building class | One Family Year - Round Residence (210.01) |
| Land | Primary site |
| Topography | Level |
| Acreage | 0.12 |
| Buildings on lot | 1 |
| Year built | 1939 |
| Stories | 1 |
| Style | Cape |
| Rooms | 6 |
| Bathrooms | 2 |
| Attic | Full |
| Basement | Full |
| Exterior wall | Mas & frame |
| Heating type | Central |
| Heating system | Hot water |
| School district | Elmont 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:
23 William Street, Valley Stream, NY 11580 was built in 1939 and has a total of 1,177 square feet.
What is the assessed value of 23 William Street, Valley Stream, NY 11580 and the property tax paid?Assessed at $354, the tax amount paid for 23 William Street, Valley Stream, NY 11580 is $9,363.
When was 23 William Street, Valley Stream, NY 11580 last sold and what was the last sale price?23 William Street, Valley Stream, NY 11580 was last sold in 01/05/2023 for $537,000.
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 23 William Street, Valley Stream, 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 23 William Street, Valley Stream, NY 11580. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.
| Tax year | 2026 |
| Base tax | $9,363 |
| Current property tax | $8,834 |
| Tax class | Register |
| Market value | $354,000 |
| Assessed value | $354 |
Here's the assessment & property tax history for 23 William Street, Valley Stream, 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 | $354,000 | $354 | 2645.024 | $9,363 | -6.43% |
| 2025 | $387,000 | $387 | 2585.761 | $10,007 | -18.25% |
| 2024 | $449,603 | $450 | 2720.239 | $12,241 | +0.06% |
| 2023 | $424,000 | $424 | 2885.218 | $12,233 | -9.69% |
| 2022 | $424,000 | $424 | 3194.792 | $13,546 | -10.26% |
The complete history of permits filed for 23 William Street, Valley Stream, 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.
Access a detailed real estate market overview of Valley Stream so you can assess current trends, home values, types of properties sold and transaction volume. View the median home sale price in Valley Stream and compare it to other neighborhoods in Nassau County.
Check out recently sold homes in Valley-Stream and see how their prices compare.
Create a free account to unlock extended information for 23 William Street, Valley Stream, 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 23 William Street, Valley Stream 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) |
|---|---|---|---|---|---|
| Hamza Academy | NR | Private | PK-3 | 74 | 0.31 |
| Hamza Academy | NR | Private | PK-3 | 74 | 0.31 |
| Alden Terrace School | 6 | Public | PK, K-6 | 401 | 0.41 |
| Alden Terrace School | 6 | Public | PK, K-6 | 401 | 0.41 |
| P.S. 176 Cambria Heights | 8 | Public | PK, K-5 | 619 | 0.41 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Bible Baptist Academy | NR | Private | 6-11 | 0 | 0.35 |
| Word Christian Academy | NR | Private | K-8 | 51 | 0.64 |
| Martin De Porres School | NR | Private | 300 | 0.71 | |
| Sacred Heart Catholic School | NR | Private | PK-8 | 284 | 1.00 |
| The Gordon Parks School | 5 | Public | PK, K-8 | 653 | 1.09 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Bible Baptist Academy | NR | Private | 6-11 | 0 | 0.35 |
| Martin De Porres School | NR | Private | 300 | 0.71 | |
| Math/Science Research and Technology Magnet High School | NR | Public | 9-12 | 406 | 1.51 |
| Health Arts Robotics and Technology High School | 6 | Public | 9-12 | 511 | 1.51 |
| Institute For Health Profesions | 3 | Public | 9-12 | 462 | 1.51 |
Data provided by GreatSchools.org © 2025. All rights reserved.
Here are the neighbors for 23 William Street, Valley Stream.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 3 William St, Valley Stream | 1,788 | 07/29/1995 | $200,000 |
| 12 Alden Ave, Valley Stream | 1,243 | 09/29/2023 | $710,000 |
| 56 Finn St, Valley Stream | 1,340 | 11/21/2003 | $300,500 |
| 39 William St, Valley Stream | 1,406 | 07/23/1998 | $174,000 |
| 64 Stuart Ave, Valley Stream | 1,380 | 10/03/2012 | $350,000 |
| 8 Alden Ave, Valley Stream | 1,305 | 10/10/2025 | $795,000 |
| 31 William St, Valley Stream | 2,103 | 11/08/2000 | $275,000 |
| 4 Alden Ave, Valley Stream | 1,305 | 10/31/1996 | $175,000 |
| 47 William St, Valley Stream | 1,798 | 05/29/2024 | $825,000 |
| 43 William St, Valley Stream | 1,379 | 11/14/2012 | $418,700 |
| 11 William St, Valley Stream | 1,204 | 03/22/2004 | |
| 27 William St, Valley Stream | 1,124 | 10/25/2019 | $457,500 |
| 51 Finn St, Valley Stream | 1,361 | 05/16/1996 | $158,500 |
| 15 William St, Valley Stream | 1,204 | 04/17/2023 | $459,900 |
| 18 Alden Ave, Valley Stream | 1,603 | 12/02/2016 | $380,000 |
| 35 William St, Valley Stream | 1,368 | 04/06/2023 | $629,000 |
| 30 Alden Ave, Valley Stream | 1,604 | 08/12/2014 | $300,000 |
| 24 Alden Ave, Valley Stream | 1,243 | 04/29/2019 | $520,000 |
| 52 Finn St, Valley Stream | 1,396 | 12/17/2020 | $529,000 |
| 19 William St, Valley Stream | 1,204 |