| Primary address | 9 Sinclair Street, Mastic |
| Zip code | 11950 |
| County | Suffolk |
| Municipality | Brookhaven |
| Parcel ID | 4522240 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Current property tax | $5,245 |
| Building sqft | 1,764 |
| Building class | One Family Year-Round Residence (210) |
| Acreage | 0.09 |
| Year built | 1974 |
| Rooms | 6 |
| Bedrooms | 3 |
| Bathrooms | 1 |
| Zoning district | Register |
| School district | William Floyd |
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).
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9 Sinclair Street, Mastic, NY 11950 was built in 1974 and has a total of 1,764 square feet.
What is the assessed value of 9 Sinclair Street, Mastic, NY 11950 and the property tax paid?Assessed at $1,970, the tax amount paid for 9 Sinclair Street, Mastic, NY 11950 is $7,287.
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 Sinclair Street, Mastic, including title documents, transfer conditions, mortgages and liens.
Access detailed property tax data for 9 Sinclair Street, Mastic, NY 11950. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.
| Tax year | 2025-2026 |
| Base tax | $7,287 |
| Current property tax | $5,245 |
| Market value | $371,698 |
| Assessed value | $1,970 |
Here's the assessment & property tax history for 9 Sinclair Street, Mastic, 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 | $371,698 | $1,970 | 369.908 | $7,287 | +1.72% |
| 2024-2025 | $371,698 | $1,970 | 363.67 | $7,164 | +2.08% |
| 2023-2024 | $364,815 | $1,970 | 356.252 | $7,018 | -12.23% |
| 2022-2023 | $317,742 | $1,970 | 405.87 | $7,996 | -3.28% |
| 2021-2022 | $266,216 | $1,970 | 419.634 | $8,267 | +0.99% |
The complete history of permits filed for 9 Sinclair Street, Mastic, 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 9 Sinclair Street, Mastic, 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 Sinclair Street, Mastic 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) |
|---|---|---|---|---|---|
| Moriches Elementary School | 5 | Public | K-5 | 822 | 1.18 |
| William Floyd Elementary School | 4 | Public | K-5 | 742 | 1.42 |
| William Floyd Learning Center | NR | Public | K-5 | 68 | 1.42 |
| John S Hobart Elementary School | 3 | Public | K-5 | 798 | 1.49 |
| Nathaniel Woodhull Elementary School | 6 | Public | K-5 | 703 | 1.72 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| William Floyd Middle School | 3 | Public | 6-8 | 1,053 | 1.76 |
| William Paca Middle School | 4 | Public | 6-8 | 1,009 | 2.00 |
| Eastport South Manor Junior Senior High School | 5 | Public | 7-12 | 1,530 | 2.25 |
| Center Moriches Middle School | 3 | Public | 6-8 | 325 | 2.35 |
| Our Lady Queen Of Apostles Reg Catholic School | NR | Private | PK-8 | 153 | 3.38 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| William Floyd High School | 5 | Public | 9-12 | 3,013 | 1.80 |
| Eastport South Manor Junior Senior High School | 5 | Public | 7-12 | 1,530 | 2.25 |
| Center Moriches High School | 8 | Public | 9-12 | 556 | 2.35 |
| Leonard E Burket Christian School | NR | Private | PK-12 | 77 | 3.54 |
| Bellport Senior High School | 5 | Public | 9-12 | 1,392 | 4.39 |
Data provided by GreatSchools.org © 2025. All rights reserved.
Here are the neighbors for 9 Sinclair Street, Mastic.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 16 Sinclair St, Mastic | 1,575 | ||
| 4 Sinclair St, Mastic | 1,560 | 01/30/2017 | $160,640 |
| 7 Sinclair St, Mastic | 1,338 | 05/11/2022 | |
| 32 Lambert Ave, Mastic | 1,080 | 03/02/2015 | |
| 6 Sinclair St, Mastic | 1,154 | 11/22/2011 | $180,200 |
| 14 Sawyer St, Mastic | 1,456 | 04/09/2024 | |
| 8 Sinclair St, Mastic | 1,050 | 02/17/2021 | $275,000 |
| 20 Sawyer St, Mastic | 1,960 | 09/29/2016 | $238,000 |
| 16 Boonar St, Mastic | 1,548 | 02/17/2005 | $360,000 |
| 24 Lambert Ave, Mastic | 1,240 | 10/21/2008 | $191,450 |
| 18 Sawyer St, Mastic | 1,832 | 07/02/2015 | |
| 23 Sawyer St, Mastic | 1,530 | 08/31/2005 | $325,000 |
| 21 Sawyer St, Mastic | 2,042 | 04/03/2025 | $640,000 |
| 17 Sinclair St, Mastic | 1,557 | 04/20/1995 | $23,000 |
| 10 Sinclair St, Mastic | 2,012 | 12/23/2003 | $258,000 |
| 34 Lambert Ave, Mastic | 740 | 03/08/2017 | $112,000 |
| 19 Sawyer St, Mastic | 1,702 | 09/01/2016 | $266,475 |
| 11 Sinclair St, Mastic | 1,542 | 07/01/2008 | |
| 15 Sinclair St, Mastic | 1,680 | ||
| 12 Sinclair St, Mastic | 1,150 | 11/01/2000 |