| Primary address | 21 Jefferson Avenue, Brentwood |
| Zip code | 11717 |
| County | Suffolk |
| Municipality | Islip |
| Parcel ID | 116-4-44 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Sale date | 09/19/1995 |
| Sale price | $93,000 |
| Arm's length | Register |
| Current property tax | $6,787 |
| Building class | One Family Year-Round Residence (210) |
| Acreage | 0.23 |
| 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 $31,500, the tax amount paid for 21 Jefferson Avenue, Brentwood, NY 11717 is $7,391.
When was 21 Jefferson Avenue, Brentwood, NY 11717 last sold?21 Jefferson Avenue, Brentwood, NY 11717 was last sold in 02/02/2004.
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 21 Jefferson Avenue, Brentwood, including title documents, transfer conditions, mortgages and liens.
| Purchase date | Purchase price | Buyer name | Seller name |
|---|---|---|---|
| 09/19/1995 | $93,000 | Register | Register |
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 21 Jefferson Avenue, Brentwood, NY 11717. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.
| Tax year | 2025-2026 |
| Base tax | $7,391 |
| Current property tax | $6,787 |
| Market value | $443,662 |
| Assessed value | $31,500 |
Here's the assessment & property tax history for 21 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 |
|---|---|---|---|---|---|
| 2024-2025 | $443,662 | $31,500 | 22.743 | $7,164 | +4.85% |
| 2023-2024 | $432,692 | $31,500 | 21.691 | $6,833 | -0.19% |
| 2022-2023 | $380,435 | $31,500 | 21.733 | $6,846 | +2.00% |
| 2021-2022 | $339,439 | $31,500 | 21.306 | $6,711 | +1.39% |
| 2020-2021 | $324,742 | $31,500 | 21.013 | $6,619 | +4.58% |
The complete history of permits filed for 21 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 21 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 21 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 | 0.59 |
| Twin Pines Elementary School | 4 | Public | 1-5 | 744 | 0.68 |
| MDQ Academy | NR | Private | PK-12 | 412 | 0.76 |
| MDQ Academy | NR | Private | PK-12 | 412 | 0.76 |
| East Elementary School | NR | Public | PK, K | 507 | 0.94 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| MDQ Academy | NR | Private | PK-12 | 412 | 0.76 |
| East Middle School | 4 | Public | 6-8 | 1,159 | 0.77 |
| Freshman Center | NR | Public | 9 | 1,247 | 0.98 |
| South Middle School | 3 | Public | 6-8 | 1,033 | 1.09 |
| North Middle School | 4 | Public | 6-8 | 1,131 | 1.20 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Brentwood High School | 3 | Public | 9-12 | 4,641 | 0.76 |
| MDQ Academy | NR | Private | PK-12 | 412 | 0.76 |
| Freshman Center | NR | Public | 9 | 1,247 | 0.98 |
| Central Islip Senior High School | 3 | Public | 9-12 | 2,576 | 2.45 |
| Brentwood Res Center | NR | Public | 9-10, 12 | 11 | 2.92 |
Data provided by GreatSchools.org © 2025. All rights reserved.
Here are the neighbors for 21 Jefferson Avenue, Brentwood.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 144 Baywoods Ln, Bay Shore | 1,940 | 07/31/2023 | |
| 214 Seneca St, Ronkonkoma | 06/22/2016 | $230,000 | |
| 47-49 Park Ave, Bay Shore | 02/01/2013 | $330,000 | |
| 1468 St Louis Ave, Bay Shore | 10/17/1995 | $119,500 | |
| 91 Seabay Walk, Bay Shore | 05/23/2021 | ||
| 30 Sequams Ln, West Islip | 01/20/2006 | $650,000 | |
| 153 Gibson Ave, Brentwood | 02/24/2001 | ||
| 23 1st CT, Ronkonkoma | 02/05/2013 | $259,900 | |
| 17 Otis Rd, Islip Terrace | 10/18/1995 | $135,000 | |
| 99 Feller Dr, Central Islip | 08/22/2024 | $305,000 | |
| 447 Bridge Rd, Hauppauge | 12/23/1998 | ||
| 1501 Brightshore Blvd, Bay Shore | 10/19/1995 | $114,000 | |
| 89 Eastview Rd, Ronkonkoma | 12/20/2023 | ||
| 34 Colony Dr, Holbrook | 1,984 | 01/20/2017 | $435,000 |
| 101 Woodland St, East Islip | 1,274 | 12/16/2020 | $445,000 |
| 1122 Hyman Ave, Bay Shore | 01/27/2014 | ||
| 354 New Jersey Ave, Bay Shore | 07/22/2003 | ||
| 49 Spence Ave, Holtsville | 09/21/1999 | ||
| 73 Lincoln Ave, Islip Terrace | 07/10/2013 | $250,000 | |
| 19 William Ave, Central Islip | 06/06/2005 |