| Primary address | 31 Mount Road, Stony Brook |
| Zip code | 11790 |
| County | Suffolk |
| Municipality | Brookhaven |
| Parcel ID | 8603443 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Sale date | 03/25/2009 |
| Sale price | $250,000 |
| Arm's length | Register |
| Property tax | $18,270 |
| Building sqft | 2,058 |
| Building class | One Family Year-Round Residence (210) |
| Acreage | 0.86 |
| Year built | 1999 |
| Rooms | 8 |
| Bedrooms | 4 |
| Bathrooms | 2 |
| 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:
31 Mount Road, Stony Brook, NY 11790 was built in 1999 and has a total of 2,058 square feet.
What is the assessed value of 31 Mount Road, Stony Brook, NY 11790 and the property tax paid?Assessed at $4,295, the tax amount paid for 31 Mount Road, Stony Brook, NY 11790 is $18,270.
When was 31 Mount Road, Stony Brook, NY 11790 last sold and what was the last sale price?31 Mount Road, Stony Brook, NY 11790 was last sold in 03/25/2009 for $250,000.
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 31 Mount 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 31 Mount 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 | $18,270 |
| Market value | $810,378 |
| Assessed value | $4,295 |
Here's the assessment & property tax history for 31 Mount 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 | $810,378 | $4,295 | 425.389 | $18,270 | +4.07% |
| 2024-2025 | $810,378 | $4,295 | 408.764 | $17,556 | +5.13% |
| 2023-2024 | $795,371 | $4,295 | 388.818 | $16,700 | +1.20% |
| 2022-2023 | $692,742 | $4,295 | 384.195 | $16,501 | +2.22% |
| 2021-2022 | $580,406 | $4,295 | 375.859 | $16,143 | +1.41% |
The complete history of permits filed for 31 Mount 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.
Create a free account to unlock extended information for 31 Mount 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 31 Mount 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) |
|---|---|---|---|---|---|
| International Christian School | NR | Private | PK, K-12 | 0 | 0.56 |
| International Christian School | NR | Private | PK, K-12 | 0 | 0.56 |
| North Shore Montessori | NR | Private | PK-K | 63 | 1.02 |
| North Shore Montessori | NR | Private | PK-K | 63 | 1.02 |
| William Sidney Mount School | 6 | Public | PK, K-6 | 511 | 1.11 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| International Christian School | NR | Private | PK, K-12 | 0 | 0.56 |
| The Stony Brook School | NR | Private | 7-12 | 412 | 0.84 |
| Robert Cushman Murphy Junior High School | 8 | Public | 7-9 | 667 | 1.53 |
| Harbor Country Day School | NR | Private | PK-8 | 134 | 1.79 |
| Paul J Gelinas Junior High School | 8 | Public | 7-9 | 647 | 2.05 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| International Christian School | NR | Private | PK, K-12 | 0 | 0.56 |
| The Stony Brook School | NR | Private | 7-12 | 412 | 0.84 |
| The Knox School | NR | Private | 6-12 | 156 | 2.85 |
| Ward Melville Senior High School | 10 | Public | 9-12 | 1,507 | 3.02 |
| Smithtown High School East | 10 | Public | 9-12 | 1,475 | 3.29 |
Data provided by GreatSchools.org © 2025. All rights reserved.
Here are the neighbors for 31 Mount Road, Stony Brook.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 7 Lotawana Ln, Stony Brook | |||
| 29 Mount Rd, Stony Brook | 3,088 | 09/10/2014 | $625,000 |
| 46 Magnet St, Stony Brook | 2,770 | 11/06/2009 | $430,000 |
| 1251 N Country Rd, Stony Brook | 10/17/2025 | $975,000 | |
| 16 Mills Rd, Stony Brook | 1,572 | 09/29/2016 | $359,000 |
| 15 Bayberry Ln, Stony Brook | 2,264 | 06/03/2008 | $419,000 |
| 19 Bennett Ln, Stony Brook | 820 | 05/11/2004 | $322,000 |
| 7 Bailey Hollow Rd, Stony Brook | 1,172 | 01/16/2014 | |
| 12 Erland Rd, Stony Brook | 1,316 | 06/21/2022 | |
| 5 Salt Meadow Ln, Stony Brook | 1,771 | 07/27/2023 | $650,000 |
| 1167 N Country Rd, Stony Brook | 1,086 | 09/14/2021 | |
| 31 Cedar Dr, Stony Brook | 06/23/2022 | $530,000 | |
| 82 Cedar St, Stony Brook | 01/09/1998 | ||
| 16 Hilltop Rd, Stony Brook | 1,992 | 07/22/2021 | $575,000 |
| 48 Magnet St, Stony Brook | 2,770 | 08/08/2016 | $570,000 |
| 20 Erland Rd, Stony Brook | 2,346 | 08/19/2019 | $615,000 |
| 49 Marion Ave, Stony Brook | 1,950 | 09/25/2025 | $775,000 |
| 238 Christian Ave, Stony Brook | 2,069 | ||
| 50 Magnet St, Stony Brook | 3,062 | ||
| 14 Woodfield Rd, Stony Brook | 2,800 | 02/15/1995 | $247,000 |