| Primary address | 684 Union Avenue, Holtsville |
| Zip code | 11742 |
| County | Suffolk |
| Municipality | Brookhaven |
| Parcel ID | 6817950 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Current property tax | $9,449 |
| Building sqft | 1,661 |
| Building class | One Family Year-Round Residence (210) |
| Acreage | 0.48 |
| Year built | 1978 |
| Rooms | 6 |
| Bedrooms | 3 |
| Bathrooms | 2 |
| School district | Sachem |
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:
684 Union Avenue, Holtsville, NY 11742 was built in 1978 and has a total of 1,661 square feet.
What is the assessed value of 684 Union Avenue, Holtsville, NY 11742 and the property tax paid?Assessed at $3,390, the tax amount paid for 684 Union Avenue, Holtsville, NY 11742 is $11,972.
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 684 Union Avenue, Holtsville, including title documents, transfer conditions, mortgages and liens.
Access detailed property tax data for 684 Union Avenue, Holtsville, NY 11742. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.
| Tax year | 2025-2026 |
| Base tax | $11,973 |
| Current property tax | $9,449 |
| Market value | $639,623 |
| Assessed value | $3,390 |
Here's the assessment & property tax history for 684 Union Avenue, Holtsville, 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 | $639,623 | $3,390 | 338.342 | $11,470 | -17.92% |
| 2023-2024 | $627,777 | $3,390 | 412.188 | $13,973 | +27.16% |
| 2022-2023 | $546,775 | $3,390 | 324.157 | $10,989 | +3.72% |
| 2021-2022 | $458,108 | $3,390 | 312.54 | $10,595 | +2.63% |
| 2020-2021 | $440,260 | $3,390 | 304.524 | $10,323 | +1.29% |
The complete history of permits filed for 684 Union Avenue, Holtsville, 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 684 Union Avenue, Holtsville, 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 684 Union Avenue, Holtsville 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) |
|---|---|---|---|---|---|
| Long Island Baptist Academy | NR | Private | 2-12 | 8 | 0.16 |
| Waverly Avenue School | 6 | Public | K-5 | 463 | 0.72 |
| Tamarac Elementary School | 7 | Public | K-5 | 443 | 0.76 |
| Chippewa Elementary School | 5 | Public | K-5 | 515 | 1.27 |
| Nokomis School | 3 | Public | K-5 | 527 | 1.60 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Long Island Baptist Academy | NR | Private | 2-12 | 8 | 0.16 |
| Sagamore Middle School | 6 | Public | 6-8 | 933 | 0.93 |
| Seneca Middle School | 6 | Public | 6-8 | 973 | 1.32 |
| Oregon Middle School | 5 | Public | 6-8 | 592 | 2.87 |
| Samoset Middle School | 6 | Public | 6-8 | 892 | 2.95 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Long Island Baptist Academy | NR | Private | 2-12 | 8 | 0.16 |
| Sachem High School East | 7 | Public | 9-12 | 2,082 | 2.90 |
| Sachem High School North | 8 | Public | 9-12 | 1,923 | 3.14 |
| Patchogue Medford High School | 5 | Public | 9-12 | 2,443 | 3.27 |
| Aunt T's Home Day Care | NR | Private | PK, K-12 | 0 | 3.42 |
Data provided by GreatSchools.org © 2025. All rights reserved.
Here are the neighbors for 684 Union Avenue, Holtsville.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 672 Union Ave, Holtsville | 1,361 | 06/29/2010 | $340,000 |
| 685 Union Ave, Holtsville | 1,400 | 02/20/2006 | $335,000 |
| 3 Park St, Holtsville | 1,361 | 04/19/2012 | $345,000 |
| 7 Park St, Holtsville | 1,638 | ||
| 10 Park St, Holtsville | 1,275 | ||
| 9 Park St, Holtsville | 1,892 | 02/17/2004 | $325,500 |
| 678 Union Ave, Holtsville | 1,959 | 12/08/2020 | $480,000 |
| 8 Park St, Holtsville | 1,821 | ||
| 14 Jamaica St, Holtsville | 1,418 | ||
| 25 Floral Ave, Holtsville | 1,444 | ||
| 6 Park St, Holtsville | 1,060 | ||
| 10 Jamaica St, Holtsville | 2,455 | 11/07/2001 | $225,000 |
| 11 Park St, Holtsville | 1,032 | 05/23/2008 | $339,900 |
| 15 Park St, Holtsville | 1,122 | 12/27/2013 | $150,000 |
| 2 Jamaica St, Holtsville | 1,369 | ||
| 680 Union Ave, Holtsville | 1,361 | 11/14/2019 | |
| 676 Union Ave, Holtsville | 1,361 | 07/13/2020 | $400,000 |
| 6 Jamaica St, Holtsville | 2,405 | 02/04/2026 | $680,000 |
| 2 Park St, Holtsville | 1,700 | 10/05/2010 | |
| 3 Garden St, Holtsville | 1,955 | 05/28/2024 | $605,000 |