Suffolk County and Islip Town property records for 3 addresses on Cortelyou Ave, Islip, NY · Last verified August 2026
| Properties | 3 |
|---|---|
| Latest Sale | $670,000 (May 2024) |
| Deeds and Mortgages on File | 6 |
| Average Living Area | 1,960 sq ft |
| Owner Occupied | 67% |
| Average Year Built | 1973 |
| Average Ownership Tenure | 13 years |
Owner names and prior sale amounts shown locked below are available instantly with a free trial.
1,880 sqft · Built 2007 · 0.169 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $670,000May 2024 | Amount on Record May 2017 | 1 Name on Record | Assessor + 4 DocumentsUpdated Aug 2026 |
2,040 sqft · Built 1940 · 0.23 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $283,250Jan 2003 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
0.23 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| 2 Names on Record Owner Occupied | AssessorUpdated Aug 2026 |
Source: USDA Forest Service Wildfire Risk to Communities · 2nd edition (2024), fuels as of 2020
| Wildfire Risk | Low this street's cells rank at the 3rd percentile of exposed land nationally · 4th in New York |
|---|---|
| Wildfire Likelihood | Low — less than 1 in 10,000 per year |
| Exposure | Direct 1 of 2 cells directly exposed · 2 adjoin burnable vegetation |