Suffolk County and Riverhead Town property record for 5644 Sound Ave, Riverhead, NY 11901
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2.5 ba · 2,819 sqft · built 1937 |
| Lot Size | 1.01 acres (43,996 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $350,000 (Mar 2020) |
| Tax Bill | $13,775 (2024) |
| Deeds & Mortgages | Mar 2020 Sale |
| Flood Zone | Zone X (minimal risk) |
| APN | 473000 8.-7-4 |
| Primary APN | 473000 8.-7-4 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 8 Rooms |
| Stories | 2 Stories |
| Building Area | 2,819 sqft Living Area |
| Gross Area | 3,671 sqft |
| 1st Floor Area | 1,480 sqft |
| 2nd Floor Area | 1,339 sqft |
| Year Built | Built 1937 |
|---|---|
| Effective Year Built | Effective 2006 |
| Architectural Style | Old Style |
| Exterior Material | Aluminum/Vinyl |
| Lot Area | 43,996 sqft |
| Lot Width | 155 ft Width |
| Garage Type | Attached |
| Garage Area | 852 sqft |
| Parking Spaces | 3 Parking Spaces |
| Porch | Open Porch |
| Porch Area | 209 sqft |
| Heating System | Hot Water |
|---|---|
| Heating Fuel | Oil |
| Account Number | 38 |
|---|---|
| Street Address | 5644 SOUND AVE |
| City | RIVERHEAD |
| State | NY |
| Zip | 11901-5609 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | RA80 |
| Legal Description | L 43 HALLOCKVILL EST 7980 |
| Legal Subdivision | MAP HALLOCKVILLE ESTATES |
| Legal Block | 7 |
| Legal Lot Number | 4 |
| Jurisdiction | SUFFOLK NY |
| Township / Civil Division | RIVERHEAD |
| Census Block Group | 3 |
| Census Block | 3001 |
| Census Tract | 169906 |
5644 Sound Ave is owned and occupied by two individuals who bought it in March 2020.
Source: Suffolk County and Riverhead Town records, as of August 11, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 5644 SOUND AVE, RIVERHEAD, NY 11901-5609 |
| 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 | Mar 3, 2020 · Amount on File |
| Deed Sale | Mar 3, 2020 · Amount on File |
| Prior Sale | Oct 18, 2010 · Amount on File |
| Deed Book / Page | 13050 / 315 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed |
|---|---|
| Jurisdiction | SUFFOLK NY |
| Recording Date | Mar 3, 2020 |
| Property Address | 5644 SOUND AVE, RIVERHEAD, NY 11901-5609 |
| Document Number | 0130500315 |
| Book / Page | 13050 / 315 |
| Instrument Date | Feb 27, 2020 |
| Transaction Type | Transfer |
| Record Updated | Aug 20, 2021 |
| Amount | Amount on Record |
|---|---|
| Tax | $0.00 |
| Amount Accuracy | Full Amount Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|
Source: Suffolk County and Riverhead Town assessment roll, as of August 11, 2026
| Type | Name |
|---|---|
| State | New York |
| County | Suffolk County |
| County Subdivision | Riverhead Town |
| Unified School District | Riverhead Central School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $67,900 Land $12,700 Building $55,200 | $832,108 Land $155,637 Building $676,471 | |
| 2024 | $13,775.00 | ||
| 2023 | $67,900 Land $12,700 Building $55,200 | $730,893 Land $136,706 Building $594,187 |
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 5644 Sound Ave in Zone X, an area of minimal flood risk.
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 |
| Flood Insurance Cost | Premium on File median of 28 policies |
| Nearby Flood Policies | 28 in force |
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 5644 Sound Ave is low, with 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 80% of the US · above 54% of New York |
|---|---|
| Wildfire Likelihood | 0.01% annual chance |
| Exposure | Direct burnable vegetation |
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 | RIVERHEAD WATER DISTRICT serves 35,000 people · EPA ID NY5103705 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Jul 2025 |
| Lead | 2 ppb (2025–2027) action level 15 ppb |
| Water Quality | Nitrite resolved · Jul 2023 |
|---|---|
| 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 25 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Optimum Fiber · Cable | 8,000 / 8,000 |
| T-Mobile Fixed Wireless | 100 / 20 |
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