| Primary address | 245 Union Avenue, Holbrook |
| Zip code | 11741 |
| County | Suffolk |
| Municipality | Brookhaven |
| Parcel ID | 8001871 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Sale date | 12/23/2025 |
| Sale price | $1,815,000 |
| Arm's length | Register |
| Property tax | $254,288 |
| Building sqft | 14,224 |
| Building class | Office Building |
| Acreage | 4 |
| 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:
This Office Building (SCILSO) located at 245 Union Avenue, Holbrook, NY 11741 has a total of 14,224 square feet and a current price per square foot of $127.
What is the market value of 245 Union Avenue, Holbrook, NY 11741?The current market value is $13,584,906.
View detailed property contacts like owners, building management, representatives from permits and tenants with a free account.
| Listing type | For Sale |
|---|---|
| Listing date | 12/04/2020 |
| Last updated | 05/08/2026 |
| Lot size | 5 Acre |
Built in 1925, the asset originally served as an elementary school for the local community. As the Sachem Central School District grew and additional schools were constructed to accommodate the growing student population, 245 Union Avenue became the administrative offices for the District. The asset is bordered by main road access – immediately off of Exit 61/South Service Road from the east-west and Patchogue/Holbrook Road from a northsouth exposure. Highly visible and surrounded by various retail centers, strip malls and free-standing shops, Union Avenue also provides access to the Long Island Railroad’s Ronkonkoma train station The site itself features a 14,224 sq. foot, single story building on a flat, oversized lot. The remaining space is comprised of a surface parking lot, open field and a baseball diamond
Create a free account to view the complete sales history for 245 Union Avenue, Holbrook, including title documents, transfer conditions, mortgages and liens.
| Purchase date | Purchase price | Buyer name | Seller name |
|---|---|---|---|
| 12/23/2025 | $1,815,000 | Register | Register |
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 245 Union Avenue, Holbrook, NY 11741. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.
| Tax year | 2025-2026 |
| Property tax | $254,288 |
| Market value | $13,584,906 |
| Assessed value | $72,000 |
Here's the assessment & property tax history for 245 Union Avenue, Holbrook, 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 | $13,584,906 | $72,000 | 338.342 | $243,606 | -17.92% |
| 2023-2024 | $13,333,334 | $72,000 | 412.188 | $296,775 | +27.16% |
| 2022-2023 | $11,612,903 | $72,000 | 324.157 | $233,393 | +3.72% |
| 2021-2022 | $9,729,730 | $72,000 | 312.54 | $225,029 | +2.63% |
| 2020-2021 | $9,350,649 | $72,000 | 304.524 | $219,257 | +1.29% |
The complete history of permits filed for 245 Union Avenue, Holbrook, 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.
| Total population | 26,667 |
| Median age | 40.5 |
| Average household income | $160,160 |
| Family households | 75.5% |
| Occupied housing units | 9,004 |
| Owner occupied units | 79.6% |
| Average number of people per household | 2.95 |
| Median year structure built | 1975 |
| Median value for units with a mortgage | $545,400 |
| Median value for units without a mortgage | $520,100 |
Create a free account to unlock extended information for 245 Union Avenue, Holbrook, 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 245 Union Avenue, Holbrook 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 |
Here are the neighbors for 245 Union Avenue, Holbrook.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 164 Union Ave, Holbrook | 3,052 | 06/27/2025 | $950,000 |
| 603 Blue Point Rd, Holtsville | 1,543 | ||
| 79 Division St, Holtsville | 1,342 | 07/16/2012 | $182,500 |
| 707 Union Ave, Holtsville | |||
| 15 Knickerbocker Ave, Holbrook | 6,568 | 10/17/2011 | $600,000 |
| 2 Coates Ave, Holbrook | 1,656 | 06/21/2021 | |
| 22 Woodland Ave, Holtsville | 1,764 | 12/13/2013 | $309,000 |
| 174 Union Ave, Holbrook | 2,588 | 12/10/2012 | |
| 9 Hopes Ave, Holtsville | 1,345 | ||
| 3 Smith Ave, Holbrook | 01/06/2020 | $350,000 | |
| 6 Coates Ave, Holbrook | 1,409 | 10/04/2021 | $404,000 |
| 150 Holbrook Rd, Holbrook | |||
| 90 Granny Rd, Farmingville | 1,223 | 04/11/2022 | $425,000 |
| 8 Smith Ave S, Holbrook | 1,945 | 03/02/2023 | $515,000 |
| 10 Smith Ave S, Holbrook | 1,313 | 12/04/2020 | $390,317 |
| 80 Aster Ave, Holtsville | 4,026 | 10/13/2006 | $559,900 |
| 51 Holbrook Rd, Holbrook | 06/19/2008 | $30,000 | |
| 34 Smith Ave, Holbrook | 1,176 | 02/03/2022 | $365,000 |
| 157 Union Ave, Holbrook | 1,985 | 02/03/2010 | $392,500 |
| 4 Coates Ave, Holbrook | 895 | 07/12/2024 | $385,000 |