Suffolk County and Islip Town property record for 721 Johnson Ave, Ronkonkoma, NY 11779
| Property Type | Single Family Home |
|---|---|
| Lot Size | 0.41 acres (17,860 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $415,000 (Apr 2007) |
| Tax Bill | $9,957 (2024) |
| Deeds & Mortgages | Mar 2017 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 472889 62.-1-50 |
| Primary APN | 472889 62.-1-50 |
|---|---|
| Alternative APNs |
|
| Lot Area | 17,860 sqft (0.41 acres) |
|---|---|
| Lot Width | 76 ft Width |
| Account Number | 545482 |
|---|---|
| Street Address | 721 JOHNSON AVE |
| City | RONKONKOMA |
| State | NY |
| Zip | 11779-6138 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | A |
| Legal Description | X2239910Y212786 T014H00000000 |
| Legal Block | 2000 |
| Legal Lot Number | 100 |
| Jurisdiction | SUFFOLK NY |
| Township / Civil Division | ISLIP |
| Census Block Group | 2 |
| Census Block | 2021 |
| Census Tract | 145808 |
721 Johnson Ave is owned and occupied by two individuals who bought it in April 2007.
Source: Suffolk County and Islip Town records, as of August 11, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 721 JOHNSON AVE, RONKONKOMA, NY 11779-6138 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Apr 30, 2007 · Amount on File |
| Deed Sale | Apr 30, 2007 · Amount on File |
| Deed Book / Page | 12503 / 57 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SUFFOLK NY |
| Property Address | 721 JOHNSON AVE, RONKONKOMA, NY 11779-6138 |
| Document Number | 0228130503 |
| Book / Page | 022813 / 000503 |
| Instrument Date | Mar 24, 2017 |
| Transaction Type | Mortgage |
| Record Updated | Aug 1, 2017 |
| Title Company | EQUITY SETTLEMENT SERVICES, EQUITY SETTLEMENT SVCS |
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants with Right of Survivorship |
| Address | 721 JOHNSON AVE RONKONKOMA NY 117796138, RONKONKOMA, NY 11779-6138 |
| Document Number | 0228130503 |
|---|---|
| Date | May 1, 2017 |
| Book Page | 022813/000503 |
| Name | RESMAC |
|---|---|
| Address | BOCA RATON, FL 33487 |
| Type | FHA Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 360 Months |
| Due | Apr 30, 2047 |
Source: Suffolk County and Islip Town assessment roll, as of August 11, 2026
| Type | Name |
|---|---|
| State | New York |
| County | Suffolk County |
| County Subdivision | Islip Town |
| Unified School District | Connetquot Central School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $37,800 Land $13,700 Building $24,100 | $532,395 (-) Land $192,958 Building $339,437 | |
| 2024 | $9,957.00 | $532,395 (+2.54%) Land $192,958 Building $339,437 | |
| 2023 | $37,800 Land $13,700 Building $24,100 | $519,231 Land $188,187 Building $331,044 |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
FEMA maps place 721 Johnson Ave in Zone X, an area of minimal flood risk, though there have been 2 flood claims nearby since 2011.
Source: FEMA National Flood Hazard Layer, effective September 18, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 3 in force |
| Nearby Flood Claims | 2 (2011–2014) |
| Claims Outside the SFHA | 2 of 2 |
| Most Recent Claim | Aug 2014 · rainfall accumulation |
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
Wildfire risk around 721 Johnson Ave is low, with less than a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 98% of the US · lower than 97.9% of New York |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | None beyond ember reach |
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | SUFFOLK COUNTY WATER AUTHORITY serves 1,100,000 people · EPA ID NY5110526 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Jan 2024 |
| Lead | 1 ppb (2025–2027) action level 15 ppb |
| Water Quality | Asbestos resolved · Jul 2020 |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | None last 3 years |
Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.
Source: FCC Broadband Data Collection, based on 310 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Optimum Fiber · Cable | 8,000 / 8,000 |
| Verizon Fiber | 2,300 / 2,300 |
5G (outdoors only) and 4G LTE
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