| Primary address | 18 Leahy Avenue, Brentwood |
| Zip code | 11717 |
| County | Suffolk |
| Municipality | Islip |
| Parcel ID | 114-2-44 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Sale date | 05/03/2019 |
| Sale price | $375,000 |
| Arm's length | Register |
| Property tax | $8,706 |
| Building sqft | 1,800 |
| Building class | One Family Year-Round Residence (210) |
| Acreage | 0.25 |
| Year built | 1963 |
| 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 Leahy Avenue, Brentwood, NY 11717 was built in 1963 and has a total of 1,800 square feet.
What is the assessed value of 18 Leahy Avenue, Brentwood, NY 11717 and the property tax paid?Assessed at $37,100, the tax amount paid for 18 Leahy Avenue, Brentwood, NY 11717 is $8,705.
When was 18 Leahy Avenue, Brentwood, NY 11717 last sold and what was the last sale price?18 Leahy Avenue, Brentwood, NY 11717 was last sold in 05/03/2019 for $375,000.
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 Leahy 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 Leahy 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 | $8,706 |
| Market value | $522,535 |
| Assessed value | $37,100 |
Here's the assessment & property tax history for 18 Leahy 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 | $522,535 | $37,100 | 22.743 | $8,438 | +4.85% |
| 2023-2024 | $509,615 | $37,100 | 21.691 | $8,047 | -0.19% |
| 2022-2023 | $448,068 | $37,100 | 21.733 | $8,063 | +2.00% |
| 2021-2022 | $399,785 | $37,100 | 21.306 | $7,905 | +1.39% |
| 2020-2021 | $382,474 | $37,100 | 21.013 | $7,796 | +7.48% |
The complete history of permits filed for 18 Leahy 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 Leahy 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 Leahy 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) |
|---|---|---|---|---|---|
| Twin Pines Elementary School | 4 | Public | 1-5 | 744 | 0.31 |
| Pine Park Elementary School | NR | Public | K-1 | 534 | 0.38 |
| North Elementary School | 4 | Public | 1-5 | 855 | 1.19 |
| MDQ Academy | NR | Private | PK-12 | 412 | 1.36 |
| MDQ Academy | NR | Private | PK-12 | 412 | 1.36 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Freshman Center | NR | Public | 9 | 1,247 | 0.21 |
| North Middle School | 4 | Public | 6-8 | 1,131 | 0.70 |
| South Middle School | 3 | Public | 6-8 | 1,033 | 1.34 |
| MDQ Academy | NR | Private | PK-12 | 412 | 1.36 |
| East Middle School | 4 | Public | 6-8 | 1,159 | 1.60 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Freshman Center | NR | Public | 9 | 1,247 | 0.21 |
| Brentwood High School | 3 | Public | 9-12 | 4,641 | 0.84 |
| MDQ Academy | NR | Private | PK-12 | 412 | 1.36 |
| Brentwood Res Center | NR | Public | 9-10, 12 | 11 | 2.11 |
| Ascent School for Individuals With Autism | NR | Private | 4-12 | 24 | 2.77 |
Data provided by GreatSchools.org © 2025. All rights reserved.
Here are the neighbors for 18 Leahy Avenue, Brentwood.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 133 2nd Ave, Brentwood | 10/29/2004 | $260,000 | |
| 30 Cedar St E, Central Islip | 846 | 02/20/2018 | $340,000 |
| 50 Van Cedar St, Brentwood | 12/04/2002 | $225,000 | |
| 47 Krause St, Bay Shore | 1,239 | 08/16/2021 | $393,500 |
| 10 Kaymac St, Brentwood | 03/02/2015 | $293,550 | |
| 192 Strong St, Brentwood | 1,868 | 02/02/2000 | $125,000 |
| 18 Doolittle St, Brentwood | 12/27/2004 | ||
| 71 Sunburst Ter, Central Islip | 09/28/2012 | $201,000 | |
| 58 Morris St, Brentwood | 02/05/2001 | $140,000 | |
| 55 Campbell Ln, East Islip | 03/19/2026 | $450,000 | |
| 49 Irish Ln, East Islip | 3,300 | 01/17/2015 | |
| 39 N Montgomery Ave, Bay Shore | 1,814 | 04/26/2017 | $153,500 |
| 136 St Johns St, Central Islip | 01/09/2026 | $595,000 | |
| 9 Korol St, Bay Shore | 01/05/2024 | ||
| 19 Oak Neck Ln, West Islip | 02/11/2000 | ||
| 165 Ithaca St, Bay Shore | 2,467 | 11/20/2017 | $410,000 |
| 19 Roosevelt St, Bay Shore | 07/11/2002 | ||
| 990 Smithtown Ave, Bohemia | 02/17/2023 | $800,000 | |
| 64 Columbus Ave, Central Islip | 10/18/2022 | $500,000 | |
| 772 Spur Dr N, Bay Shore | 01/26/2000 | $107,000 |