Grafton County and Thornton Town property record for 583 Upper Mad River Rd, Thornton, NH 03285
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 3.5 ba · 5,144 sqft · built 2023 |
| Lot Size | 14.4 acres (627,264 sqft) |
| Owner | 2 Individual Names on File |
| Tax Bill | $14,860 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | THOR M:234 L:002 S:0 U:0 |
| Primary APN | THOR M:234 L:002 S:0 U:0 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Stories | 2 Stories |
| Building Area | 5,144 sqft Living Area |
| Gross Area | 10,422 sqft |
| Year Built | Built 2023 |
|---|---|
| Effective Year Built | Effective 2023 |
| Architectural Style | Cape Cod |
| Exterior Material | Aluminum/Vinyl |
| Roof Type | Gable |
| Roof Material | Asphalt |
| Lot Area | 627,264 sqft (14.4 acres) |
| Cooling System | HVAC |
|---|---|
| Heating System | Forced Air with A/C |
| Heating Fuel | Gas |
| Street Address | 583 UPPER MAD RIVER RD |
|---|---|
| City | THORNTON |
| State | NH |
| Zip | 03285-6448 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | GENERA |
| Legal Lot Number | 2 S:0 |
| Jurisdiction | THORNTON TOWN NH |
| Township / Civil Division | THORNTON |
| Census Block Group | 1 |
| Census Block | 1028 |
| Census Tract | 960401 |
583 Upper Mad River Rd is owned and occupied by two individuals.
Source: Grafton County and Thornton Town records, as of July 28, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 583 UPPER MAD RIVER RD, THORNTON, NH 03285-6448 |
| 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 |
|---|---|
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 583 Upper Mad River Rd was $14,860.
Source: Grafton County and Thornton Town assessment roll, as of July 28, 2026
| Type | Name |
|---|---|
| State | New Hampshire |
| County | Grafton County |
| County Subdivision | Thornton Town |
| Elementary School District | Thornton School District (KG - 08) |
| Secondary School District | Pemi-Baker Regional School District (09 - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2025 | $14,860.00 | $1,265,759 Land $121,959 Building $1,143,800 |
| 2023 | $32.00 (-21.95%) | $1,521 (-25.84%) Land $1,521 |
| 2022 | $41.00 | $2,051 Land $2,051 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 583 Upper Mad River Rd in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective February 7, 2024 · 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 |
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 583 Upper Mad River Rd 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 52% of New Hampshire |
|---|---|
| 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: FCC Broadband Data Collection, based on 20 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| NH Broadband Fiber | 2,000 / 2,000 |
| Spectrum Cable | 1,000 / 1,000 |
4G LTE (outdoors only), no 5G reported
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