Belknap County and Alton Town property record for 100 Main St, Alton, NH 03809
| Property Type | Government / Public Use |
|---|---|
| Details | 3 ba · 6,382 sqft · built 1951 |
| Lot Size | 0.38 acres (16,553 sqft) |
| Owner | Company Name on Record |
| APN | ALTN M:27 B:37 |
| Primary APN | ALTN M:27 B:37 |
|---|---|
| Alternative APNs |
|
| Full Baths | 3 Baths |
|---|---|
| Stories | 1 Story |
| Building Area | 6,382 sqft Total Area |
| Gross Area | 9,664 sqft |
| 1st Floor Area | 4,529 sqft |
| Basement Area | 4,493 sqft |
| Unfinished Basement | 2,307 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Elevator | Elevator |
| Year Built | Built 1951 |
|---|---|
| Effective Year Built | Effective 1951 |
| Exterior Material | Brick |
| Construction Type | Masonry / Concrete Block |
| Roof Type | Gable |
| Roof Material | Asphalt |
| Lot Area | 16,553 sqft (0.38 acres) |
| Cooling System | HVAC |
|---|---|
| Heating System | Forced Air with A/C |
| Heating Fuel | Oil |
| Street Address | 100 MAIN ST |
|---|---|
| City | ALTON |
| State | NH |
| Zip | 03809 |
| Property Category | Public Works |
| Property Type | Public Works > Government / Public Use |
| Local Zoning Code | RC-RES |
| Legal Block | 37 |
| Jurisdiction | ALTON NH |
| Township / Civil Division | ALTON |
| Census Block Group | 1 |
| Census Block | 1035 |
| Census Tract | 966502 |
Source: Belknap County and Alton Town records, as of July 28, 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 | 1 MONUMENT SQ, ALTON, NH 03809 |
| Owner Type | Company |
| Vesting | Government |
| Deed Names | Name on Deed |
|---|---|
| Record Updated | Sep 20, 2026 |
Source: Belknap County and Alton Town assessment roll, as of July 28, 2026
| Type | Name |
|---|---|
| State | New Hampshire |
| County | Belknap County |
| County Subdivision | Alton Town |
| Secondary School District | Prospect Mountain High School Joint Maintenance Agreement District (09 - 12) |
| Elementary School District | Alton School District (PK - 08) |
| Year | Assessed Value |
|---|---|
| 2024 | $1,532,000 (-) Land $86,600 Building $1,445,400 |
| 2022 | $1,532,000 Land $86,600 Building $1,445,400 |
Assessed value is set for property tax purposes and is not a market price estimate.
Source: FEMA National Flood Hazard Layer · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Not on file |
|---|---|
| Nearby Flood Policies | 2 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.
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 | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
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 | ALTON WATER WORKS serves 1,800 people · EPA ID NH0061010 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Aug 2024 |
| Lead | 210 ppb (2022–2024) action level 15 ppb |
| Copper | 2.4 mg/L (2022–2024) action level 1.3 mg/L |
| Water Quality | Arsenic resolved · Jul 2020 |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | 1 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 60 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| TDS Telecom Fiber | 1,000 / 1,000 |
| Breezeline Cable | 1,000 / 50 |
4G LTE only, no 5G reported
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