| Primary address | 9 Stony Brook Ext Road, Stony Brook |
| Zip code | 11790 |
| County | Suffolk |
| Municipality | Brookhaven |
| Parcel ID | 250240 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Property tax | $17,866 |
| Building class | Schools (612) |
| Acreage | 0.27 |
| School district | Three Village |
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:
Assessed at $4,200, the tax amount paid for 9 Stony Brook Ext Road, Stony Brook, NY 11790 is $17,866.
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 9 Stony Brook Ext Road, Stony Brook, including title documents, transfer conditions, mortgages and liens.
Access detailed property tax data for 9 Stony Brook Ext Road, Stony Brook, NY 11790. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.
| Tax year | 2025-2026 |
| Property tax | $17,866 |
| Market value | $792,453 |
| Assessed value | $4,200 |
Here's the assessment & property tax history for 9 Stony Brook Ext Road, Stony Brook, 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 |
|---|---|---|---|---|---|
| 2025-2026 | $792,453 | $4,200 | 425.389 | $17,866 | +4.07% |
| 2024-2025 | $792,453 | $4,200 | 408.764 | $17,168 | +5.13% |
| 2023-2024 | $777,778 | $4,200 | 388.818 | $16,330 | +1.20% |
| 2022-2023 | $677,419 | $4,200 | 384.195 | $16,136 | +2.22% |
| 2021-2022 | $567,568 | $4,200 | 375.859 | $15,786 | +1.41% |
The complete history of permits filed for 9 Stony Brook Ext Road, Stony Brook, 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 Brookhaven so you can assess current trends, home values, types of properties sold and transaction volume. View the median home sale price in Brookhaven and compare it to other neighborhoods in Suffolk County.
| Total population | 21,074 |
| Median age | 22.3 |
| Average household income | $204,466 |
| Family households | 76.3% |
| Occupied housing units | 4,455 |
| Owner occupied units | 90.5% |
| People per household (average) | 2.82 |
| Median year structure built | 1965 |
| Median value for units with a mortgage | $638,700 |
| Median value for units without a mortgage | $599,200 |
Create a free account to unlock extended information for 9 Stony Brook Ext Road, Stony Brook, 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 9 Stony Brook Ext Road, Stony Brook to see estimated average daily traffic on streets surrounding the property as well as the types of properties in its vicinity.
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Here are the neighbors for 9 Stony Brook Ext Road, Stony Brook.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 10 Stony Brook Ext Rd, Stony Brook | |||
| 15 Garden Ave, Stony Brook | 10/21/2021 | $649,000 | |
| 72 Garden Ave, Stony Brook | 08/04/2017 | ||
| 38 Quaker Path, Stony Brook | 1,672 | 07/18/2019 | $487,500 |
| 8 Stony Ext Rd, Stony Brook | |||
| 4 Stony Ext Rd, Stony Brook | 01/19/2005 | ||
| 3 Peggy Ln, Stony Brook | 2,348 | 02/08/2019 | |
| 9 Stony Rd, Stony Brook | 1,883 | 05/08/2023 | $735,000 |
| 7 Garden Ave, Stony Brook | 11/14/2025 | $785,000 | |
| 7 Stony Rd, Stony Brook | 1,768 | 11/19/2021 | $522,000 |
| 7 Peggy Ln, Stony Brook | |||
| 44 Woodbine Ave, Stony Brook | 2,203 | 04/18/2003 | |
| 18 Garden Ave, Stony Brook | 10/09/2009 | $355,000 | |
| 40 Quaker Path, Stony Brook | 901 | 02/18/2026 | $750,000 |
| 1 Stony Ext Rd, Stony Brook | 06/01/1999 | ||
| 3 Stony Rd, Stony Brook | 2,282 | 08/29/2014 | |
| 31 Houghton Blvd, Stony Brook | 1,743 | 05/28/2021 | $424,000 |