Suffolk County and Riverhead Town property record for 427 Hamilton Ave, Riverhead, NY 11901
| Property Type | Duplex |
|---|---|
| Details | 8 bd · 2.5 ba · 2,235 sqft · built 1926 |
| Lot Size | 0.3 acres (13,068 sqft) |
| Owner | Company Name on Record |
| Last Sale | $310,000 (May 2004) |
| Tax Bill | $12,053 (2024) |
| Flood Zone | Zone X (minimal risk) |
| APN | 473000 123.-2-68 |
| Primary APN | 473000 123.-2-68 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 8 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 15 Rooms |
| Units | 2 Units |
| Stories | 1 Story |
| Building Area | 2,235 sqft Living Area |
| Gross Area | 2,363 sqft |
| 1st Floor Area | 1,380 sqft |
| Upper Floors Area | 1,140 sqft |
| Year Built | Built 1926 |
|---|---|
| Effective Year Built | Effective 1926 |
| Architectural Style | Old Style |
| Exterior Material | Composition/Composite |
| Lot Area | 13,068 sqft (0.3 acres) |
| Lot Dimensions | 131 ft deep x 100 ft wide |
| View / Lot | Canal |
| Garage Type | Detached |
| Garage Area | 520 sqft |
| Parking Spaces | 2 Parking Spaces |
| Porch | Screened Porch |
| Porch Area | 128 sqft |
| Heating System | Hot Water |
|---|---|
| Heating Fuel | Oil |
| Water Source | Commercial |
| Account Number | 04 |
|---|---|
| Street Address | 427 HAMILTON AVE |
| City | RIVERHEAD |
| State | NY |
| Zip | 11901-2929 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Local Zoning Code | 03 |
| Legal Description | *491 LOTS 72 & 73 WM H SWEEZY 247 0000 3 |
| Legal Subdivision | MAP PROPERTY WILLIAM H SWEZEY |
| Legal Block | 2 |
| Legal Lot Number | 68 |
| Jurisdiction | SUFFOLK NY |
| Township / Civil Division | RIVERHEAD |
| Census Block Group | 1 |
| Census Block | 1008 |
| Census Tract | 169800 |
Source: Suffolk County and Riverhead Town records, as of August 11, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | Company Name on Record |
|---|---|
| Mailing Address | PO BOX 389, CUTCHOGUE, NY 11935-0389 |
| Owner Type | Company |
| Vesting | Company |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | May 12, 2004 · Amount on Record |
| Deed Sale | May 12, 2004 · Amount on Record |
| Deed Book / Page | 12318 / 602 |
| Record Updated | Sep 20, 2026 |
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 | $54,400 (+47.03%) Land $8,400 Building $46,000 | $666,667 (+67.39%) Land $102,941 Building $563,725 | |
| 2024 | $12,053.00 | ||
| 2023 | $37,000 Land $8,400 Building $28,600 | $398,278 Land $90,420 Building $307,858 |
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.
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 | 1 in force |
| Nearby Flood Claims | 3 (1979–2008) |
| Claims Outside the SFHA | 3 of 3 |
| Most Recent Claim | Sep 2008 · 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.
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 | 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 | 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 212 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Optimum Fiber · Cable | 8,000 / 8,000 |
May also be available: Verizon.
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