| Primary address | 18 Jefferson Avenue, Brentwood |
| Zip code | 11717 |
| County | Suffolk |
| Municipality | Islip |
| Parcel ID | 137-1-90.1 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Sale date | 03/02/2026 |
| Sale price | $680,000 |
| Arm's length | Register |
| Property tax | $7,075 |
| Building sqft | 1,157 |
| Building class | One Family Year-Round Residence (210) |
| Acreage | 0.23 |
| Year built | 1932 |
| 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:
18 Jefferson Avenue, Brentwood, NY 11717 was built in 1932 and has a total of 1,157 square feet.
What is the assessed value of 18 Jefferson Avenue, Brentwood, NY 11717 and the property tax paid?Assessed at $30,150, the tax amount paid for 18 Jefferson Avenue, Brentwood, NY 11717 is $7,074.
When was 18 Jefferson Avenue, Brentwood, NY 11717 last sold and what was the last sale price?18 Jefferson Avenue, Brentwood, NY 11717 was last sold in 03/02/2026 for $680,000.
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 18 Jefferson 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 Jefferson 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 | $7,075 |
| Market value | $424,647 |
| Assessed value | $30,150 |
Here's the assessment & property tax history for 18 Jefferson 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 |
|---|---|---|---|---|---|
| 2025-2026 | $424,647 | $30,150 | 23.465 | $7,075 | +3.17% |
| 2024-2025 | $424,647 | $30,150 | 22.743 | $6,857 | +4.85% |
| 2023-2024 | $414,148 | $30,150 | 21.691 | $6,540 | -0.19% |
| 2022-2023 | $364,131 | $30,150 | 21.733 | $6,552 | +2.00% |
| 2021-2022 | $324,892 | $30,150 | 21.306 | $6,424 | +1.39% |
The complete history of permits filed for 18 Jefferson 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 Jefferson 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 Jefferson 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) |
|---|---|---|---|---|---|
| Pine Park Elementary School | NR | Public | K-1 | 534 | 0.60 |
| Twin Pines Elementary School | 4 | Public | 1-5 | 744 | 0.68 |
| MDQ Academy | NR | Private | PK-12 | 412 | 0.72 |
| MDQ Academy | NR | Private | PK-12 | 412 | 0.72 |
| East Elementary School | NR | Public | PK, K | 507 | 0.96 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| MDQ Academy | NR | Private | PK-12 | 412 | 0.72 |
| East Middle School | 4 | Public | 6-8 | 1,159 | 0.80 |
| Freshman Center | NR | Public | 9 | 1,247 | 0.97 |
| South Middle School | 3 | Public | 6-8 | 1,033 | 1.02 |
| North Middle School | 4 | Public | 6-8 | 1,131 | 1.21 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Brentwood High School | 3 | Public | 9-12 | 4,641 | 0.69 |
| MDQ Academy | NR | Private | PK-12 | 412 | 0.72 |
| Freshman Center | NR | Public | 9 | 1,247 | 0.97 |
| Central Islip Senior High School | 3 | Public | 9-12 | 2,576 | 2.50 |
| Brentwood Res Center | NR | Public | 9-10, 12 | 11 | 2.90 |
Data provided by GreatSchools.org © 2025. All rights reserved.
Here are the neighbors for 18 Jefferson Avenue, Brentwood.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 10 Codman St, Brentwood | 04/16/2015 | $205,000 | |
| 35 Oklahoma Ave, Bay Shore | 04/17/2008 | $355,000 | |
| 35 Gainsborough Rd, Holbrook | 07/13/2007 | $450,000 | |
| 26 Bruce Ln, Brentwood | 03/30/2016 | $300,000 | |
| 44 Church Ln, West Islip | 02/28/2011 | $325,000 | |
| 49 Magnolia St, Central Islip | 07/26/2007 | ||
| 338 Raft Ave, Holbrook | 07/30/2007 | $379,990 | |
| 11 Thunder Rd, Holbrook | 07/30/2007 | $465,000 | |
| 61 E Halley Ln, Central Islip | 1,288 | 06/25/2019 | $280,000 |
| 55 Beech St, Central Islip | 1,931 | 08/07/2007 | |
| 34 Union Ave, Islip | 10/14/2009 | ||
| 137 Marion St, Sayville | 3,040 | 05/31/2019 | $575,000 |
| 18 W White St, Brentwood | 01/29/2025 | $525,000 | |
| 230 G Springmeadow Dr, Holbrook | 04/05/2016 | $228,000 | |
| 227 I Springmeadow Dr, Holbrook | 894 | 01/18/2022 | $373,500 |
| 820 Sandra Ave, West Islip | 07/20/2007 | $485,000 | |
| 192 Pawnee St, Ronkonkoma | 980 | 10/24/2018 | $335,000 |
| 57 Quintuck Ln, East Islip | 04/16/2025 | ||
| 10 Carleton Ave, Islip Terrace | 1,470 | 08/02/2019 | $315,000 |
| 1406 Ferndale Blvd, Central Islip | 1,454 | 11/27/2024 | $620,000 |