Suffolk County and Riverhead Town property record for 700 Harrison Ave, Riverhead, NY 11901 · Last verified August 2026
| Property Type | Public Works > Public School (Administration, Campus, Dorns, Instruction) |
|---|---|
| Bathrooms | 11 Baths |
| Architecture Style | Colonial |
| Year Built | Built 1972 |
| Square Footage | 252,053 sqft Gross Area |
| Lot Size | 31.6 acres |
| Tax Bill | $106,238.00 (2024) |
Source: Suffolk County and Riverhead Town records · APN 473000 108.-4-15
Assessment roll updated August 11, 2026 · Last verified August 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 700 OSBORN AVE, RIVERHEAD, NY 11901-2912 |
| Owner Type | Owner is a Company |
| Deed Names | Verified Name on Deed |
|---|---|
| Record Refreshed | Sep 20, 2026 |
Source: Suffolk County and Riverhead Town records · Assessment roll updated August 11, 2026 · Last verified August 2026
| Type | Name |
|---|---|
| State | New York |
| County | Suffolk County |
| County Subdivision | Riverhead Town |
| Unified School District | Riverhead Central School District (PK - 12) |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $20,500,000 (-) Land $442,000 Building $20,058,000 | $251,225,490 (+13.85%) Land $5,416,667 Building $245,808,824 | |
| 2024 | $106,238.00 | ||
| 2023 | $20,500,000 Land $442,000 Building $20,058,000 | $220,667,384 Land $4,757,804 Building $215,909,580 |
Source: FEMA National Flood Hazard Layer, Suffolk County (36103C), updated September 18, 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified: October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| Special Flood Hazard Area | No |
| Wildfire Risk | Not rated no burnable land in reach |
|---|---|
| Wildfire Likelihood | Negligible |
| Exposure | None beyond ember reach |
Values are read at the parcel center point; lenders make the official flood determination.
| Primary APN | 473000 108.-4-15 |
|---|---|
| Alternative APNs |
|
| Full Baths | 11 Baths |
|---|---|
| Units | 2 Units |
| Building Area | 252,053 sqft Gross Area |
| 1st Floor | 89,040 sqft 1st Floor |
| Stories | 2 Stories |
| Year Built | Built 1972 |
|---|---|
| Effective Year Built | Effective 1972 |
| Architectural Style | Colonial Style |
| Exterior Material | Brick Exterior |
| Lot Area | 1,376,496 sqft |
| Total Buildings | 2 Total Buildings |
| View | Inferior View |
| Heating System | Hot Water Heating |
|---|---|
| Heating Fuel | Gas Heating Fuel |
| Water Source | Yes (Unknown Type) Water Source |
| Account Number | 04 |
|---|---|
| Street Address | 700 HARRISON AVE |
| City | RIVERHEAD |
| State | NY |
| Zip | 11901-2780 |
| Property Usage | Land which may be one of the following: Public spaces (i.e. parks and beaches), public buildings (i.e. schools, hospitals, courthouse), public services (i.e. water treatment, electrical grid/product, dams) Property Usage |
| Type | Public Works > Public School (Administration, Campus, Dorns, Instruction) |
| Legal Description | 116 0000 3 |
| Legal Block | 4 |
| Legal Lot Number | 15 |
| Jurisdiction | SUFFOLK NY |
| Minor Civil Division | RIVERHEAD |
| Census Blockgroup | 2 |
| Census Block | 2006 |
| Census Tract | 169800 |
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