| Primary address | 4 Oconnor Court, Mount Sinai |
| Zip code | 11766 |
| County | Suffolk |
| Municipality | Brookhaven |
| Parcel ID | 1142005 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Sale date | 12/17/2024 |
| Sale price | $719,900 |
| Arm's length | Register |
| Property tax | $13,056 |
| Building class | One Family Year-Round Residence (210) |
| Acreage | 0.75 |
| School district | Mount Sinai |
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 $3,175, the tax amount paid for 4 Oconnor Court, Mount Sinai, NY 11766 is $13,056.
When was 4 Oconnor Court, Mount Sinai, NY 11766 last sold and what was the last sale price?4 Oconnor Court, Mount Sinai, NY 11766 was last sold in 12/17/2024 for $719,900.
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 4 Oconnor Court, Mount Sinai, 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 4 Oconnor Court, Mount Sinai, NY 11766. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.
| Tax year | 2025-2026 |
| Property tax | $13,056 |
| Market value | $599,057 |
| Assessed value | $3,175 |
Here's the assessment & property tax history for 4 Oconnor Court, Mount Sinai, 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 | $599,057 | $3,175 | 394.249 | $12,517 | +3.18% |
| 2023-2024 | $587,963 | $3,175 | 382.097 | $12,132 | +3.44% |
| 2022-2023 | $512,097 | $3,175 | 369.378 | $11,728 | +2.22% |
| 2021-2022 | $429,054 | $3,175 | 361.352 | $11,473 | +2.37% |
| 2020-2021 | $412,338 | $3,175 | 352.982 | $11,207 | +2.16% |
The complete history of permits filed for 4 Oconnor Court, Mount Sinai, 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 4 Oconnor Court, Mount Sinai, 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 4 Oconnor Court, Mount Sinai 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) |
|---|---|---|---|---|---|
| Clinton Avenue School | NR | Public | K-2 | 441 | 1.75 |
| Mount Sinai Middle School | 5 | Public | 5-8 | 667 | 2.00 |
| West Middle Island School | 4 | Public | K-4 | 642 | 2.04 |
| North Shore Christian School | NR | Private | PK, K-6 | 101 | 2.10 |
| North Shore Christian School | NR | Private | PK, K-6 | 101 | 2.10 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Mount Sinai Middle School | 5 | Public | 5-8 | 667 | 2.00 |
| John F Kennedy Middle School | 4 | Public | 4, 6-8 | 822 | 2.12 |
| North Country Road School | 5 | Public | 6-8 | 534 | 3.33 |
| Maryhaven Center Of Hope | NR | Private | 47 | 3.44 | |
| Selden Middle School | 4 | Public | 6-8 | 1,058 | 3.66 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Comsewogue High School | 6 | Public | 9-12 | 1,153 | 1.44 |
| Miller Place High School | 9 | Public | 9-12 | 820 | 1.73 |
| Mount Sinai High School | 9 | Public | 9-12 | 720 | 2.14 |
| Sunshine Alternative Education Center | NR | Private | 10-12 | 10 | 2.66 |
| Maryhaven Center Of Hope | NR | Private | 47 | 3.44 |
Data provided by GreatSchools.org © 2025. All rights reserved.
Here are the neighbors for 4 Oconnor Court, Mount Sinai.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 2 Jessica Ln, Mount Sinai | 2,444 | 12/10/2019 | |
| 28 Miller Place Middle Island Rd, Mount Sinai | 1,272 | 11/20/2024 | |
| 3 Equity CT, Mount Sinai | 2,128 | ||
| 6 Barry Ln, Mount Sinai | 2,126 | 02/19/2026 | $775,000 |
| 5 Barry Ln, Mount Sinai | 1,202 | 05/28/2020 | $335,000 |
| 6 Griffin Dr, Mount Sinai | 1,888 | 02/01/2023 | |
| 12 Griffin Dr, Mount Sinai | 1,375 | 02/21/2017 | $330,000 |
| 3 Barry Ln, Mount Sinai | 1,688 | 09/29/2006 | $395,000 |
| 16 Griffin Dr, Mount Sinai | 2,230 | 02/17/2026 | $765,000 |
| 4 Griffin Dr, Mount Sinai | 2,390 | 04/15/1996 | $141,000 |
| 3 Jessica Ln, Mount Sinai | 2,328 | ||
| 3 Oconnor CT, Mount Sinai | 12/14/2015 | $347,500 | |
| 32 Miller Place Middle Island Rd, Mount Sinai | 4,050 | 08/04/1997 | |
| 8 Barry Ln, Mount Sinai | 2,587 | ||
| 8 Griffin Dr, Mount Sinai | 2,444 | 09/25/2015 | $395,096 |
| 1 Jessica Ln, Mount Sinai | 2,378 | 07/17/1995 | $200,000 |
| 10 Griffin Dr, Mount Sinai | 2,144 | 01/18/2016 | |
| 4 Barry Ln, Mount Sinai | 1,484 | ||
| 1 Equity CT, Mount Sinai | 2,138 | 12/18/2024 | $710,000 |
| 4 Jessica Ln, Mount Sinai | 2,606 | 07/31/2019 |