| Primary address | 491 Ralph Avenue, Central Islip |
| Zip code | 11722 |
| County | Suffolk |
| Municipality | Islip |
| Parcel ID | 97-1-14 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Sale date | 05/31/2011 |
| Sale price | $330,000 |
| Arm's length | Register |
| Current property tax | $13,526 |
| Building class | One Family Year-Round Residence with Accessory Apartment (215) |
| Acreage | 0.45 |
| Zoning district | Register |
| School district | Central Islip |
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 $47,300, the tax amount paid for 491 Ralph Avenue, Central Islip, NY 11722 is $14,417.
When was 491 Ralph Avenue, Central Islip, NY 11722 last sold and what was the last sale price?491 Ralph Avenue, Central Islip, NY 11722 was last sold in 05/31/2011 for $330,000.
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 491 Ralph Avenue, Central Islip, 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 491 Ralph Avenue, Central Islip, NY 11722. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.
| Tax year | 2025-2026 |
| Base tax | $14,418 |
| Current property tax | $13,526 |
| Market value | $666,197 |
| Assessed value | $47,300 |
Here's the assessment & property tax history for 491 Ralph Avenue, Central Islip, 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 | $666,197 | $47,300 | 30.481 | $14,418 | +3.08% |
| 2024-2025 | $666,197 | $47,300 | 29.569 | $13,986 | +5.71% |
| 2023-2024 | $649,725 | $47,300 | 27.973 | $13,231 | -1.12% |
| 2022-2023 | $571,256 | $47,300 | 28.29 | $13,381 | +16.77% |
| 2021-2022 | $440,733 | $40,900 | 28.019 | $11,460 | -2.89% |
The complete history of permits filed for 491 Ralph Avenue, Central Islip, 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 491 Ralph Avenue, Central Islip, 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 491 Ralph Avenue, Central Islip 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) |
|---|---|---|---|---|---|
| Anthony Alfano Elementary School | 5 | Public | PK, K-6 | 586 | 0.68 |
| Anthony Alfano Elementary School | 5 | Public | PK, K-6 | 586 | 0.68 |
| Cordello Avenue Elementary School | 4 | Public | K-6 | 507 | 1.01 |
| Our Lady Of Providence Regional School | NR | Private | PK-8 | 251 | 1.06 |
| Our Lady Of Providence Regional School | NR | Private | PK-8 | 251 | 1.06 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Our Lady Of Providence Regional School | NR | Private | PK-8 | 251 | 1.06 |
| East Middle School | 4 | Public | 6-8 | 1,159 | 1.16 |
| Ralph Reed School | 3 | Public | 7-8 | 1,149 | 1.39 |
| MDQ Academy | NR | Private | PK-12 | 412 | 1.89 |
| Gersh Academy | NR | Private | 6-12 | 0 | 2.19 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Central Islip Senior High School | 3 | Public | 9-12 | 2,576 | 0.69 |
| MDQ Academy | NR | Private | PK-12 | 412 | 1.89 |
| Hauppauge High School | 9 | Public | 9-12 | 1,079 | 2.15 |
| Gersh Academy | NR | Private | 6-12 | 0 | 2.19 |
| Brentwood High School | 3 | Public | 9-12 | 4,641 | 2.40 |
Data provided by GreatSchools.org © 2025. All rights reserved.
Here are the neighbors for 491 Ralph Avenue, Central Islip.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 258 Branch Ave, Central Islip | 03/21/2022 | $450,000 | |
| 45 39th St, Islip | 03/05/2004 | ||
| 827 Sandra Ave, West Islip | 12/16/2005 | $540,000 | |
| 104 Suffolk Ave, Brentwood | 05/05/2016 | $126,744 | |
| 98 Inverness Rd, Holbrook | 12/31/2004 | $351,000 | |
| 1026 Joselson Ave, Bay Shore | 02/28/2004 | ||
| 1706 Pine Grove Blvd, Bay Shore | 06/02/2006 | ||
| 1449 Richland Blvd, Bay Shore | 03/23/2015 | ||
| 41 Apple St, Central Islip | 07/13/2006 | $450,000 | |
| 461 Grand Blvd, Brentwood | 08/17/2005 | ||
| 39 S Fairview Ave, Bayport | 04/14/2004 | $850,000 | |
| 400 Furrows Rd, Holbrook | 10,963 | 08/13/2007 | |
| 30 Robbins Walk, Bay Shore | 03/03/2025 | $693,000 | |
| 3242 Union Blvd, East Islip | 1,348 | 10/30/2019 | $332,500 |
| 195 Grand Blvd, Brentwood | 08/30/2005 | $360,000 | |
| 38 Fairlawn Dr, Central Islip | 1,400 | 12/16/2021 | $369,000 |
| 1554 Lincoln Blvd, Bay Shore | 952 | 05/25/2018 | $315,000 |
| 77 Grant Ave, Brentwood | 05/10/2004 | ||
| 130 Bucknell Rd, West Sayville | 05/03/2004 | ||
| 50 Bushwick Ave, Brentwood | 12/28/2016 |