Suffolk County and Riverhead Town property record for 203 Union Ave, Riverhead, NY 11901
| Property Type | Duplex |
|---|---|
| Details | 4 bd · 2 ba · 1,716 sqft · built 1900 |
| Lot Size | 0.12 acres (5,227 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $225,000 (Nov 2013) |
| Tax Bill | $8,615 (2024) |
| Flood Zone | Zone X (minimal risk) |
| APN | 473000 129.-2-41 |
| Primary APN | 473000 129.-2-41 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 9 Rooms |
| Stories | 2 Stories |
| Building Area | 1,716 sqft Living Area |
| Gross Area | 1,860 sqft |
| 1st Floor Area | 1,230 sqft |
| 2nd Floor Area | 486 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1900 |
|---|---|
| Effective Year Built | Effective 1900 |
| Architectural Style | Old Style |
| Exterior Material | Wood |
| Lot Area | 5,227 sqft (0.12 acres) |
| View / Lot | Canal |
| Garage Type | Detached |
| Garage Area | 440 sqft |
| Parking Spaces | 2 Parking Spaces |
| Porch | Covered Porch |
| Porch Area | 221 sqft |
| Heating System | Hot Water |
|---|---|
| Heating Fuel | Oil |
| Water Source | Commercial |
| Account Number | 04 |
|---|---|
| Street Address | 203 UNION AVE |
| City | RIVERHEAD |
| State | NY |
| Zip | 11901-4608 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Local Zoning Code | 08 |
| Legal Description | 509 0000 1 |
| Legal Block | 2 |
| Legal Lot Number | 41 |
| Jurisdiction | SUFFOLK NY |
| Township / Civil Division | RIVERHEAD |
| Census Block Group | 4 |
| Census Block | 4020 |
| Census Tract | 169800 |
Source: NPS National Register of Historic Places, as of August 1, 2026
| Historic District | Within the Second and Ostrander Historic District listed 2017 · 220 contributing resources · NRIS 100001491 |
|---|
Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.
203 Union Ave, a duplex, is owned and occupied by two individuals who bought it in November 2013.
Source: Suffolk County and Riverhead Town records, as of August 11, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 203 UNION AVE, RIVERHEAD, NY 11901-4608 |
| 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 | Nov 20, 2013 · Amount on File |
| Deed Sale | Nov 20, 2013 · Amount on File |
| Prior Sale | Nov 20, 2013 |
| Deed Book / Page | 12753 / 229 |
| 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 | $34,700 Land $5,600 Building $29,100 | $425,245 Land $68,627 Building $356,618 | |
| 2024 | $8,615.00 | ||
| 2023 | $34,700 Land $5,600 Building $29,100 | $373,520 Land $60,280 Building $313,240 |
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 203 Union Ave in Zone X, an area of minimal flood risk, though there have been 46 flood claims nearby since 1978.
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 22 policies |
| Nearby Flood Policies | 22 in force |
| Nearby Flood Claims | 46 (1978–2020) |
| Claims Outside the SFHA | 21 of 46 |
| Most Recent Claim | Apr 2020 · other causes |
| Claims by Event |
|
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 203 Union 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 | 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 244 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: T-Mobile, Verizon.
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