Middlesex County and Watertown City property record for 25 Hersom St, Watertown, MA 02472
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1 ba · 1,224 sqft · built 1952 |
| Lot Size | 0.117 acres (5,115 sqft) |
| Owner | 2 Individual Names on File |
| Tax Bill | $9,116 (2026) |
| Flood Zone | Zone X (minimal risk) |
| APN | 31620-18 |
| Primary APN | 31620-18 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 4 Rooms |
| Stories | 2 Stories |
| Building Area | 1,224 sqft Living Area |
| Gross Area | 2,552 sqft |
| Basement Area | 816 sqft |
| Unfinished Basement | 816 sqft |
| Year Built | Built 1952 |
|---|---|
| Effective Year Built | Effective 1952 |
| Architectural Style | Cape Cod |
| Exterior Material | Wood Siding |
| Construction Type | Frame |
| Roof Type | Gable |
| Roof Material | Asphalt |
| Lot Area | 5,115 sqft (0.117 acres) |
| Garage Type | Basement |
| Parking Spaces | 1 Parking Space |
| Heating System | Hot Water |
|---|---|
| Heating Fuel | Oil |
| Account Number | 7946 |
|---|---|
| Street Address | 25 HERSOM ST |
| City | WATERTOWN |
| State | MA |
| Zip | 02472-1610 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | T |
| Legal Block | 9A |
| Jurisdiction | WATERTOWN MA |
| Township / Civil Division | WATERTOWN TOWN |
| Census Block Group | 3 |
| Census Block | 3004 |
| Census Tract | 370101 |
25 Hersom St is owned and occupied by two individuals.
Source: Middlesex County and Watertown City records, as of October 20, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 25 HERSOM ST, WATERTOWN, MA 02472-1610 |
| 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 | Oct 29, 2026 |
The 2026 property tax bill for 25 Hersom St was $9,116, up 5.9% from the year before.
Source: Middlesex County and Watertown City assessment roll, as of April 14, 2026
| Type | Name |
|---|---|
| State | Massachusetts |
| County | Middlesex County |
| Municipality | Watertown City |
| Unified School District | Watertown School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $9,116.00 (+5.93%) | $747,200 (+1.41%) Land $521,500 Building $225,700 | $669,213 (-15.09%) |
| 2025 | $8,606.00 (+17.28%) | $736,800 (+17.47%) Land $521,500 Building $215,300 | $788,120 (+11.24%) |
| 2024 | $7,338.00 (-10.24%) | $627,200 (+4.19%) Land $492,800 Building $134,400 | $708,510 |
| 2023 | $8,175.00 | $602,000 Land $471,400 Building $130,600 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 25 Hersom St in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 1978.
Source: FEMA National Flood Hazard Layer, effective September 10, 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 | 1 (1978) |
| Most Recent Claim | Feb 1978 · tidal / storm surge |
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.
The area around 25 Hersom St has no burnable land within ember reach, so its wildfire risk is not rated.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within 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 | WATERTOWN DEPARTMENT OF PUBLIC WORKS serves 35,985 people · EPA ID MA3314000 |
|---|---|
| Water Source | Purchased surface water from MWRA |
| Last State Inspection | Oct 2025 |
| Lead | 1 ppb (2025) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| 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 926 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 2,000 |
| Astound Broadband Cable | 1,500 / 50 |
| Verizon Fiber · Fixed Wireless in parts of the area | 980 / 880 |
May also be available: AT&T, T-Mobile.
5G (outdoors only) and 4G LTE
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