| Primary address | 18 9th Avenue, Brentwood |
| Zip code | 11717 |
| County | Suffolk |
| Municipality | Islip |
| Parcel ID | 183-3-27 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Sale date | 06/12/2015 |
| Sale price | $320,000 |
| Arm's length | Register |
| Property tax | $9,386 |
| Building class | One Family Year-Round Residence (210) |
| Acreage | 0.19 |
| Zoning district | Register |
| School district | Brentwood |
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 $40,000, the tax amount paid for 18 9th Avenue, Brentwood, NY 11717 is $9,386.
When was 18 9th Avenue, Brentwood, NY 11717 last sold?18 9th Avenue, Brentwood, NY 11717 was last sold in 06/24/2025.
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 18 9th Avenue, Brentwood, including title documents, transfer conditions, mortgages and liens.
*Here are the three most recent sales for this property.
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 18 9th Avenue, Brentwood, NY 11717. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.
| Tax year | 2025-2026 |
| Property tax | $9,386 |
| Market value | $563,380 |
| Assessed value | $40,000 |
Here's the assessment & property tax history for 18 9th Avenue, Brentwood, 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 | $563,380 | $40,000 | 22.743 | $9,097 | +4.85% |
| 2023-2024 | $549,451 | $40,000 | 21.691 | $8,676 | -0.19% |
| 2022-2023 | $483,092 | $40,000 | 21.733 | $8,693 | +2.00% |
| 2021-2022 | $431,034 | $40,000 | 21.306 | $8,522 | +1.39% |
| 2020-2021 | $412,371 | $40,000 | 21.013 | $8,405 | +4.58% |
The complete history of permits filed for 18 9th Avenue, Brentwood, 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 18 9th Avenue, Brentwood, 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 18 9th Avenue, Brentwood 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) |
|---|---|---|---|---|---|
| Oak Park Elementary School | 2 | Public | K-5 | 711 | 0.42 |
| MDQ Academy | NR | Private | PK-12 | 412 | 0.58 |
| MDQ Academy | NR | Private | PK-12 | 412 | 0.58 |
| Southeast Elementary School | 5 | Public | 1-5 | 566 | 1.16 |
| Laurel Park Elementary School | 3 | Public | 1-5 | 665 | 1.26 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| South Middle School | 3 | Public | 6-8 | 1,033 | 0.15 |
| MDQ Academy | NR | Private | PK-12 | 412 | 0.58 |
| East Middle School | 4 | Public | 6-8 | 1,159 | 1.29 |
| Freshman Center | NR | Public | 9 | 1,247 | 1.40 |
| North Middle School | 4 | Public | 6-8 | 1,131 | 1.86 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Brentwood High School | 3 | Public | 9-12 | 4,641 | 0.35 |
| MDQ Academy | NR | Private | PK-12 | 412 | 0.58 |
| Freshman Center | NR | Public | 9 | 1,247 | 1.40 |
| Bay Shore Senior High School | 5 | Public | 9-12 | 1,910 | 2.60 |
| Ascent School for Individuals With Autism | NR | Private | 4-12 | 24 | 3.05 |
Data provided by GreatSchools.org © 2025. All rights reserved.
Here are the neighbors for 18 9th Avenue, Brentwood.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 15 W Lakeland St, Bay Shore | 09/19/2025 | ||
| 214 Parkwood St, Ronkonkoma | 2,653 | 10/15/2020 | $480,000 |
| 601 Pine Dr, Bay Shore | 2,326 | 04/29/2021 | $590,000 |
| 74 Hilltop Dr, Brentwood | 09/25/2003 | $250,000 | |
| 8 Locust St E, Central Islip | 05/13/2004 | $236,900 | |
| 39 Lake Shore Dr, Ronkonkoma | 06/12/2009 | ||
| 263 Secatogue Ln, West Islip | 09/30/2010 | $400,000 | |
| 1594 Washington Ave, Bohemia | 07/22/2003 | $325,000 | |
| 12 Kay CT, East Islip | 05/14/2009 | $442,500 | |
| 104 King St, Bay Shore | 06/26/2007 | $390,000 | |
| 23 13th St, Holbrook | 06/22/2023 | ||
| 123 Van Horn Ave, Holbrook | 1,512 | 09/24/2018 | $395,000 |
| 1522 Washington Ave, Bohemia | 05/27/2020 | ||
| 146 Peterson St, Brentwood | 08/08/2007 | ||
| 419 Connetquot Ave, Islip Terrace | 10/08/2003 | $300,000 | |
| 67 Jefferson Ave, Bay Shore | 02/26/2019 | ||
| 1117 Udall Rd, Bay Shore | 10/26/2004 | ||
| 150 Adams St E, East Islip | 10/14/2003 | $330,000 | |
| 1126 Nugent Ave, Bay Shore | 10/09/2003 | $250,000 | |
| 309 Homestead Rd, Bayport | 10/01/2003 | $365,309 |