| Primary address | 421 Peconic Street, Ronkonkoma |
| Zip code | 11779 |
| County | Suffolk |
| Municipality | Islip |
| Parcel ID | 103-1-48 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Sale date | 09/25/2020 |
| Sale price | $435,000 |
| Arm's length | Register |
| Property tax | $11,497 |
| Building sqft | 1,786 |
| Building class | One Family Year-Round Residence (210) |
| Acreage | 0.38 |
| Year built | 1970 |
| Zoning district | Register |
| School district | Connetquot |
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:
421 Peconic Street, Ronkonkoma, NY 11779 was built in 1970 and has a total of 1,786 square feet.
What is the assessed value of 421 Peconic Street, Ronkonkoma, NY 11779 and the property tax paid?Assessed at $39,800, the tax amount paid for 421 Peconic Street, Ronkonkoma, NY 11779 is $11,496.
When was 421 Peconic Street, Ronkonkoma, NY 11779 last sold?421 Peconic Street, Ronkonkoma, NY 11779 was last sold in 05/14/2025.
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 421 Peconic Street, Ronkonkoma, including title documents, transfer conditions, mortgages and liens.
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 421 Peconic Street, Ronkonkoma, NY 11779. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.
| Tax year | 2025-2026 |
| Property tax | $11,497 |
| Market value | $560,564 |
| Assessed value | $39,800 |
Here's the assessment & property tax history for 421 Peconic Street, Ronkonkoma, 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 | $560,564 | $39,800 | 27.581 | $10,977 | +4.79% |
| 2023-2024 | $546,703 | $39,800 | 26.321 | $10,476 | +1.30% |
| 2022-2023 | $480,676 | $39,800 | 25.984 | $10,342 | +0.86% |
| 2021-2022 | $428,879 | $39,800 | 25.763 | $10,254 | +2.14% |
| 2020-2021 | $410,309 | $39,800 | 25.224 | $10,039 | +4.15% |
The complete history of permits filed for 421 Peconic Street, Ronkonkoma, 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 421 Peconic Street, Ronkonkoma, 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 421 Peconic Street, Ronkonkoma 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) |
|---|---|---|---|---|---|
| Helen B Duffield Elementary School | 6 | Public | K-5 | 322 | 0.58 |
| Edith L Slocum Elementary School | 6 | Public | PK, K-5 | 272 | 0.98 |
| Edith L Slocum Elementary School | 6 | Public | PK, K-5 | 272 | 0.98 |
| Cherokee Street Elementary School | 5 | Public | K-5 | 592 | 1.61 |
| St Joseph School | NR | Private | PK, K-8 | 212 | 1.88 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Ronkonkoma Middle School | 8 | Public | 6-8 | 672 | 0.45 |
| St Joseph School | NR | Private | PK, K-8 | 212 | 1.88 |
| Cleary School For The Deaf | NR | Private | PK-12 | 79 | 2.45 |
| Ralph Reed School | 3 | Public | 7-8 | 1,149 | 2.66 |
| Gersh Academy | NR | Private | 6-12 | 0 | 2.72 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Connetquot High School | 8 | Public | 9-12 | 1,757 | 1.01 |
| Cleary School For The Deaf | NR | Private | PK-12 | 79 | 2.45 |
| Gersh Academy | NR | Private | 6-12 | 0 | 2.72 |
| Central Islip Senior High School | 3 | Public | 9-12 | 2,576 | 3.38 |
| Sachem High School North | 8 | Public | 9-12 | 1,923 | 3.54 |
Data provided by GreatSchools.org © 2025. All rights reserved.
Here are the neighbors for 421 Peconic Street, Ronkonkoma.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 2240 9th Ave, Ronkonkoma | 02/06/2023 | ||
| 471 Peconic St, Ronkonkoma | 1,456 | 03/31/2025 | $539,000 |
| 2099 9th Ave, Ronkonkoma | 11,180 | 11/09/2016 | $1,275,000 |
| 301 Christopher St, Ronkonkoma | 23,760 | 02/04/2011 | |
| 2270 9th Ave, Ronkonkoma | 09/20/2001 | $205,000 | |
| 2089 9th Ave, Ronkonkoma | 14,196 | ||
| 2185 5th Ave, Ronkonkoma | 19,082 | 02/13/2013 | $1,698,928 |
| 2250 9th Ave, Ronkonkoma | 03/31/2014 | ||
| 485 Peconic St, Ronkonkoma | 1,308 | 05/21/2019 | $402,500 |
| 477 Peconic St, Ronkonkoma | |||
| 200 Christopher St, Ronkonkoma | 20,000 | 02/04/2011 | |
| 449 Peconic St, Ronkonkoma | 1,545 | 07/27/2010 | |
| 201 Christopher St, Ronkonkoma | 20,273 | 01/01/2011 | |
| 441 Peconic St, Ronkonkoma | 1,135 | 07/19/2016 | $305,000 |
| 437 Peconic St, Ronkonkoma | 05/06/2026 | $675,000 | |
| 465 Peconic St, Ronkonkoma | 07/31/2025 | $550,000 | |
| 2265 5th Ave, Ronkonkoma | 09/21/2023 | $630,000 | |
| 464 Joan St, Ronkonkoma | |||
| 2175 5th Ave, Ronkonkoma | 33,000 | 08/27/2024 | $7,264,850 |
| 2226 1st Ave, Ronkonkoma | 08/26/2024 |