Middlesex County and Watertown City property record for 51 Riverside St, Watertown, MA 02472
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 1 ba · 2,086 sqft · built 1870 |
| Lot Size | 0.218 acres (9,482 sqft) |
| Owner | Company Name on File |
| Tax Bill | $10,182 (2026) |
| Deeds & Mortgages | May 2018 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 43060-23 |
| Primary APN | 43060-23 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 7 Rooms |
| Stories | 2 Stories |
| Building Area | 2,086 sqft Living Area |
| Gross Area | 3,184 sqft |
| Basement Area | 1,000 sqft |
| Unfinished Basement | 1,000 sqft |
| Year Built | Built 1870 |
|---|---|
| Effective Year Built | Effective 1870 |
| Architectural Style | Colonial |
| Exterior Material | Wood Siding |
| Construction Type | Frame |
| Roof Type | Mansard |
| Roof Material | Asphalt |
| Lot Area | 9,482 sqft (0.218 acres) |
| Heating System | Steam |
|---|---|
| Heating Fuel | Oil |
| Account Number | 9360 |
|---|---|
| Street Address | 51 RIVERSIDE ST |
| City | WATERTOWN |
| State | MA |
| Zip | 02472-2650 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R.75 |
| Legal Block | 4 |
| Legal Lot Number | 4 |
| Jurisdiction | WATERTOWN MA |
| Township / Civil Division | WATERTOWN TOWN |
| Census Block Group | 2 |
| Census Block | 2010 |
| Census Tract | 370402 |
51 Riverside St is owned by a company that acquired it in May 2018.
Source: Middlesex County and Watertown City records, as of October 20, 2026
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 59 RIVERSIDE ST, WATERTOWN, MA 02472-2650 |
| Owner Type | Company |
| Vesting | Company |
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 | Name on Deed |
|---|---|
| Last Sale | May 4, 2018 |
| Deed Sale | May 4, 2018 |
| Record Updated | Oct 29, 2026 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | WATERTOWN MA |
| Recording Date | May 4, 2018 |
| Property Address | 51 RIVERSIDE ST, WATERTOWN, MA 02472-2650 |
| Document Number | 70963-314 |
| Book / Page | 070963 / 000314 |
| Instrument Date | Nov 3, 2017 |
| Instrument | 62068 |
| Transaction Type | Transfer |
| Record Updated | May 23, 2018 |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|
The 2026 property tax bill for 51 Riverside St was $10,182, up 6.4% 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 | $10,182.00 (+6.41%) | $834,600 (+1.87%) Land $488,300 Building $346,300 | $963,110 (-) |
| 2025 | $9,569.00 (+11.05%) | $819,300 (+11.24%) Land $488,300 Building $331,000 | $963,110 (-0.5%) |
| 2024 | $8,617.00 (-8.45%) | $736,500 (+6.26%) Land $459,300 Building $277,200 | $967,955 |
| 2023 | $9,412.00 | $693,100 Land $444,400 Building $248,700 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 51 Riverside St in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.
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 |
|---|---|
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| 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.
Wildfire risk around 51 Riverside St is low, with less than 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 99.1% of the US · lower than 98.7% of Massachusetts |
|---|---|
| Wildfire Likelihood | Under 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 | 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 635 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 2,000 |
| Astound Broadband Cable · Fiber in parts of the area | 1,500 / 50 |
May also be available: AT&T, T-Mobile, Verizon.
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