| Primary address | 643 Elder Lane, Ronkonkoma |
| Zip code | 11779 |
| County | Suffolk |
| Municipality | Islip |
| Parcel ID | 62-1-13 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Current property tax | $6,713 |
| Building class | One Family Year-Round Residence (210) |
| Acreage | 0.31 |
| 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:
Assessed at $33,850, the tax amount paid for 643 Elder Lane, Ronkonkoma, NY 11779 is $9,777.
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 643 Elder Lane, Ronkonkoma, including title documents, transfer conditions, mortgages and liens.
Access detailed property tax data for 643 Elder Lane, Ronkonkoma, NY 11779. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.
| Tax year | 2025-2026 |
| Base tax | $9,778 |
| Current property tax | $6,713 |
| Market value | $476,761 |
| Assessed value | $33,850 |
Here's the assessment & property tax history for 643 Elder Lane, 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 | $476,761 | $33,850 | 27.581 | $9,336 | +4.79% |
| 2023-2024 | $464,973 | $33,850 | 26.321 | $8,910 | +1.30% |
| 2022-2023 | $408,816 | $33,850 | 25.984 | $8,796 | +0.86% |
| 2021-2022 | $364,762 | $33,850 | 25.763 | $8,721 | +2.14% |
| 2020-2021 | $348,969 | $33,850 | 25.224 | $8,538 | +4.15% |
The complete history of permits filed for 643 Elder Lane, 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 643 Elder Lane, 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 643 Elder Lane, 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) |
|---|---|---|---|---|---|
| Edith L Slocum Elementary School | 6 | Public | PK, K-5 | 272 | 0.10 |
| Edith L Slocum Elementary School | 6 | Public | PK, K-5 | 272 | 0.10 |
| Helen B Duffield Elementary School | 6 | Public | K-5 | 322 | 0.39 |
| St Joseph School | NR | Private | PK, K-8 | 212 | 0.96 |
| St Joseph School | NR | Private | PK, K-8 | 212 | 0.96 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Ronkonkoma Middle School | 8 | Public | 6-8 | 672 | 0.60 |
| St Joseph School | NR | Private | PK, K-8 | 212 | 0.96 |
| Cleary School For The Deaf | NR | Private | PK-12 | 79 | 1.77 |
| Samoset Middle School | 6 | Public | 6-8 | 892 | 2.34 |
| Great Hollow Middle School | 7 | Public | 6-8 | 828 | 2.94 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Cleary School For The Deaf | NR | Private | PK-12 | 79 | 1.77 |
| Connetquot High School | 8 | Public | 9-12 | 1,757 | 1.77 |
| Sachem High School North | 8 | Public | 9-12 | 1,923 | 2.61 |
| Gersh Academy | NR | Private | 6-12 | 0 | 3.03 |
| Lake Grove School | NR | Private | 8-12 | 50 | 3.19 |
Data provided by GreatSchools.org © 2025. All rights reserved.
Here are the neighbors for 643 Elder Lane, Ronkonkoma.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 542 Beaver Ln, Ronkonkoma | 2,270 | 05/14/2018 | $325,000 |
| 569 Elder Ln, Ronkonkoma | |||
| 566 Elder Ln, Ronkonkoma | 03/02/2026 | $670,000 | |
| 651 Elder Ln, Ronkonkoma | 02/28/2012 | $330,000 | |
| 69 Juniper Ave, Ronkonkoma | 11/23/2024 | ||
| 77 Juniper Ave, Ronkonkoma | |||
| 7 Port Ave, Ronkonkoma | |||
| 537 Elder Ln, Ronkonkoma | 04/29/2025 | ||
| 538 Elder Ln, Ronkonkoma | |||
| 646 Beaver Ln, Ronkonkoma | 06/16/2025 | ||
| 550 Beaver Ln, Ronkonkoma | |||
| 557 Elder Ln, Ronkonkoma | 1,374 | 10/26/2018 | $342,500 |
| 552 Elder Ln, Ronkonkoma | |||
| 551 Elder Ln, Ronkonkoma | |||
| 556 Elder Ln, Ronkonkoma | 1,100 | ||
| 23 Juniper Ave, Ronkonkoma | 2,178 | 04/23/2018 | $377,000 |
| 577 Elder Ln, Ronkonkoma | 07/24/2023 | ||
| 526 Elder Ln, Ronkonkoma | 11/03/2014 | $339,900 | |
| 598 Elder Ln, Ronkonkoma | 660 | 04/14/2022 | $401,000 |
| 5 Hawthorne Ave, Ronkonkoma | 07/19/2013 | $106,000 |