| Primary address | 21 Hillside Road, Stony Brook |
| Zip code | 11790 |
| County | Suffolk |
| Municipality | Brookhaven |
| Parcel ID | 629170 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Sale date | 12/07/2017 |
| Sale price | $445,000 |
| Arm's length | Register |
| Property tax | $16,654 |
| Building class | One Family Year-Round Residence (210) |
| Acreage | 0.36 |
| 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 $3,915, the tax amount paid for 21 Hillside Road, Stony Brook, NY 11790 is $16,653.
When was 21 Hillside Road, Stony Brook, NY 11790 last sold and what was the last sale price?21 Hillside Road, Stony Brook, NY 11790 was last sold in 12/07/2017 for $445,000.
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 21 Hillside Road, Stony Brook, 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 21 Hillside 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 | $16,654 |
| Market value | $738,680 |
| Assessed value | $3,915 |
Here's the assessment & property tax history for 21 Hillside 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 |
|---|---|---|---|---|---|
| 2024-2025 | $738,680 | $3,915 | 408.764 | $16,003 | +5.13% |
| 2023-2024 | $725,000 | $3,915 | 388.818 | $15,222 | +1.20% |
| 2022-2023 | $631,451 | $3,915 | 384.195 | $15,041 | +2.22% |
| 2021-2022 | $529,054 | $3,915 | 375.859 | $14,715 | +1.41% |
| 2020-2021 | $508,442 | $3,915 | 370.648 | $14,511 | +3.17% |
The complete history of permits filed for 21 Hillside 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.
Create a free account to unlock extended information for 21 Hillside 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 21 Hillside Road, Stony Brook 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) |
|---|---|---|---|---|---|
| Setauket Elementary School | 7 | Public | PK, K-6 | 604 | 1.22 |
| Setauket Elementary School | 7 | Public | PK, K-6 | 604 | 1.22 |
| North Shore Montessori | NR | Private | PK-K | 63 | 1.38 |
| North Shore Montessori | NR | Private | PK-K | 63 | 1.38 |
| The Laurel Hill School | NR | Private | PK-8 | 321 | 1.87 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Paul J Gelinas Junior High School | 8 | Public | 7-9 | 647 | 0.58 |
| The Stony Brook School | NR | Private | 7-12 | 412 | 1.34 |
| The Laurel Hill School | NR | Private | PK-8 | 321 | 1.87 |
| International Christian School | NR | Private | PK, K-12 | 0 | 2.58 |
| Port Jefferson Middle School | 7 | Public | 6-8 | 222 | 3.28 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| The Stony Brook School | NR | Private | 7-12 | 412 | 1.34 |
| International Christian School | NR | Private | PK, K-12 | 0 | 2.58 |
| Earl L Vandermeulen High School | 9 | Public | 9-12 | 323 | 3.28 |
| The Knox School | NR | Private | 6-12 | 156 | 3.38 |
| Ward Melville Senior High School | 10 | Public | 9-12 | 1,507 | 3.52 |
Data provided by GreatSchools.org © 2025. All rights reserved.
Here are the neighbors for 21 Hillside Road, Stony Brook.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 9 Hillside Rd, Stony Brook | 1,173 | 11/23/2021 | $500,000 |
| 1 Hillside Rd, Stony Brook | 679 | 04/01/2021 | |
| 21 MT Gray Rd, Stony Brook | 03/14/2002 | $355,000 | |
| 6 Hillside Rd, Stony Brook | 1,386 | 08/13/1993 | $176,000 |
| 12 Hillside Rd, Stony Brook | 11/19/2020 | $665,000 | |
| 15 Hillside Rd, Stony Brook | 1,618 | 08/29/2019 | |
| 14 Hillside Rd, Stony Brook | 3,164 | 09/18/2023 | |
| 17 Hillside Rd, Stony Brook | 08/31/2011 | $510,000 | |
| 5 Hillside Rd, Stony Brook | 2,339 | 07/15/2024 | $675,000 |
| 4 Hillside Rd, Stony Brook | 1,473 | 08/03/2012 | |
| 7 Hillside Rd, Stony Brook | 1,220 | 11/15/2024 | $570,000 |
| 136 Quaker Path, Stony Brook | 1,493 | ||
| 142 Quaker Path, East Setauket | 1,354 | ||
| 3 Van Horn CT, East Setauket | 2,286 | 08/05/2003 | $645,000 |
| 2 Hillside Rd, Stony Brook | 1,684 | 07/12/1999 | $269,000 |
| 8 Hillside Rd, Stony Brook | 1,504 | 07/15/2016 | $350,000 |
| 10 Hillside Rd, Stony Brook | 1,859 | 01/06/2024 | |
| 19 Hillside Rd, Stony Brook | 12/09/2024 | $725,000 | |
| 3 Hillside Rd, Stony Brook | 1,620 | 04/18/2022 | |
| 15 MT Grey Rd, Stony Brook | 2,081 | 10/21/2016 | $10 |