| Primary address | 20 Armstrong Street, Brentwood |
| Zip code | 11717 |
| County | Suffolk |
| Municipality | Islip |
| Parcel ID | 163-3-61 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Sale date | 04/29/1999 |
| Sale price | $52,500 |
| Arm's length | Register |
| Property tax | $7,133 |
| Building class | One Family Year-Round Residence (210) |
| Acreage | 0.17 |
| 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 $30,400, the tax amount paid for 20 Armstrong Street, Brentwood, NY 11717 is $7,133.
When was 20 Armstrong Street, Brentwood, NY 11717 last sold?20 Armstrong Street, Brentwood, NY 11717 was last sold in 11/06/2003.
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 20 Armstrong Street, 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 20 Armstrong Street, Brentwood, NY 11717. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.
| Tax year | 2025-2026 |
| Property tax | $7,133 |
| Market value | $428,169 |
| Assessed value | $30,400 |
Here's the assessment & property tax history for 20 Armstrong Street, 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 | $428,169 | $30,400 | 22.743 | $6,914 | +4.85% |
| 2023-2024 | $417,582 | $30,400 | 21.691 | $6,594 | -0.19% |
| 2022-2023 | $367,149 | $30,400 | 21.733 | $6,607 | +2.00% |
| 2021-2022 | $327,586 | $30,400 | 21.306 | $6,477 | +1.39% |
| 2020-2021 | $313,402 | $30,400 | 21.013 | $6,388 | +4.58% |
The complete history of permits filed for 20 Armstrong Street, 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 20 Armstrong Street, 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 20 Armstrong Street, 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) |
|---|---|---|---|---|---|
| Cordello Avenue Elementary School | 4 | Public | K-6 | 507 | 0.83 |
| East Elementary School | NR | Public | PK, K | 507 | 0.85 |
| East Elementary School | NR | Public | PK, K | 507 | 0.85 |
| Southeast Elementary School | 5 | Public | 1-5 | 566 | 0.98 |
| Our Lady Of Providence Regional School | NR | Private | PK-8 | 251 | 1.15 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| East Middle School | 4 | Public | 6-8 | 1,159 | 1.01 |
| Our Lady Of Providence Regional School | NR | Private | PK-8 | 251 | 1.15 |
| MDQ Academy | NR | Private | PK-12 | 412 | 1.34 |
| South Middle School | 3 | Public | 6-8 | 1,033 | 1.81 |
| Ralph Reed School | 3 | Public | 7-8 | 1,149 | 2.03 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| MDQ Academy | NR | Private | PK-12 | 412 | 1.34 |
| Central Islip Senior High School | 3 | Public | 9-12 | 2,576 | 1.63 |
| Brentwood High School | 3 | Public | 9-12 | 4,641 | 2.02 |
| East Islip High School | 8 | Public | 9-12 | 1,145 | 2.48 |
| Freshman Center | NR | Public | 9 | 1,247 | 2.73 |
Data provided by GreatSchools.org © 2025. All rights reserved.
Here are the neighbors for 20 Armstrong Street, Brentwood.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 23 Loraine St, Brentwood | 02/04/2006 | ||
| 19 3rd Ave, East Islip | 08/26/1996 | $139,900 | |
| 620 Keith Ln, West Islip | 01/17/2014 | $380,000 | |
| 20 Madeline Pl, West Islip | 09/11/2014 | $365,000 | |
| 14 Fairlawn Dr, Central Islip | 1,400 | 10/23/2018 | $309,000 |
| 95 Claridge Ln, East Islip | 07/18/1996 | $90,000 | |
| 333 Edelweiss Rd, West Islip | 10/01/2003 | $330,000 | |
| 23 Lloyd Dr, Brentwood | 11/13/2017 | ||
| 1595 5th Ave, Bay Shore | 02/21/2018 | $1,375,000 | |
| 19 Garfield Ave, East Islip | 09/26/2006 | ||
| 111 Helmig St, Brentwood | 04/07/2004 | ||
| 131 Timber Ridge Dr, Holbrook | 09/12/2023 | $470,000 | |
| 2 Northwood Blvd, Central Islip | 2,164 | 01/17/2020 | $375,500 |
| 12 Omni Ln, Holbrook | 04/17/2024 | $10 | |
| 507 Wicks Rd, Brentwood | 02/28/2005 | $263,300 | |
| 234 Marilynn St, East Islip | 11/20/2023 | ||
| 210 E Springmeadow Dr, Holbrook | 1,109 | 03/12/2018 | $265,000 |
| 21 Washington St, East Islip | 931 | 09/28/2021 | $380,000 |
| 332 Terry Rd, Holbrook | 12/15/2025 | $600,000 | |
| 8 Cori Ln, Bohemia | 02/02/2007 |