Middlesex County and Watertown City property record for 11 Mason Rd, Watertown, MA 02472
| Property Type | Single Family Home |
|---|---|
| Details | 6 bd · 2 ba · 2,968 sqft · built 1950 |
| Lot Size | 0.126 acres (5,500 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $255,000 (Oct 1995) |
| Tax Bill | $12,880 (2026) |
| Deeds & Mortgages | Apr 2026 Line of Credit Nov 2017 Line of Credit |
| Flood Zone | Zone X (minimal risk) |
| APN | 20680-05 |
| Primary APN | 20680-05 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 6 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 10 Rooms |
| Stories | 2 Stories |
| Building Area | 2,968 sqft Living Area |
| Gross Area | 4,467 sqft |
| Basement Area | 1,484 sqft |
| Unfinished Basement | 1,484 sqft |
| Year Built | Built 1950 |
|---|---|
| Effective Year Built | Effective 1950 |
| Architectural Style | Conventional |
| Exterior Material | Brick |
| Construction Type | Frame |
| Roof Type | Gable |
| Roof Material | Asphalt |
| Lot Area | 5,500 sqft (0.126 acres) |
| Heating System | Steam |
|---|---|
| Heating Fuel | Oil |
| Account Number | 6519 |
|---|---|
| Street Address | 11 MASON RD |
| City | WATERTOWN |
| State | MA |
| Zip | 02472-3314 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | T |
| Legal Block | 12 |
| Legal Lot Number | 47 |
| Jurisdiction | WATERTOWN MA |
| Township / Civil Division | WATERTOWN TOWN |
| Census Block Group | 4 |
| Census Block | 4010 |
| Census Tract | 370202 |
11 Mason Rd is owned and occupied by two individuals who bought it in October 1995.
Source: Middlesex County and Watertown City records, as of October 20, 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 | 2 Individual Names on File |
|---|---|
| Mailing Address | 11 MASON RD, WATERTOWN, MA 02472-3314 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Tenants by the Entirety |
| Date | Document |
|---|---|
| Apr 17, 2026 | Deed of Trust, Mortgage · Line of Credit CITIZENS BANK |
| Nov 30, 2017 | Deed of Trust, Mortgage · Line of Credit CITIZENS BK/RI |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Oct 2, 1995 · Amount on File |
| Deed Sale | Oct 2, 1995 · Amount on File |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | WATERTOWN MA |
| Recording Date | Apr 17, 2026 |
| Property Address | 11 MASON RD, WATERTOWN, MA 02472-3314 |
| Document Number | 0001997999 |
| Instrument Date | Apr 4, 2026 |
| Instrument | 20261997999 |
| Transaction Type | Mortgage |
| Record Updated | Jul 12, 2026 |
| Name | Verified Name |
|---|---|
| Address | 11 MASON RD, WATERTOWN, MA 02472-3314 |
| Document Number | 0001997999, |
|---|---|
| Date | Apr 17, 2026 |
| Instrument | 20261997999 |
| Name | CITIZENS BANK |
|---|
| Type | Line of Credit |
|---|---|
| Amount | Amount on Record |
| Term | 301 Months |
| Due | May 1, 2051 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 6% |
| Initial Type | Adjustable Rate |
| Max Rate | -1% |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | WATERTOWN MA |
| Property Address | 11 MASON RD, WATERTOWN, MA 02472-3314 |
| Document Number | 0000088567 |
| Instrument Date | Nov 30, 2017 |
| Transaction Type | Mortgage |
| Record Updated | Jun 19, 2018 |
| Name | Verified Name |
|---|---|
| Address | 11 MASON RD WATERTOWN MA 024723314, WATERTOWN, MA 02472-3314 |
| Document Number | 0000088567 |
|---|---|
| Date | May 30, 2018 |
| Instrument | 88567 |
| Name | CITIZENS BK/RI |
|---|---|
| Type | Bank |
| Type | Line of Credit |
|---|---|
| Amount | Amount on Record |
| Rate Type | Adjustable Rate |
|---|
The 2026 property tax bill for 11 Mason Rd was $12,880, 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 | $12,880.00 (+6.39%) | $1,055,700 (+1.85%) Land $525,500 Building $530,200 | $1,325,440 (-) |
| 2025 | $12,106.00 (+12.97%) | $1,036,500 (+13.17%) Land $525,500 Building $511,000 | $1,325,440 (-12.83%) |
| 2024 | $10,716.00 (-9.87%) | $915,900 (+4.61%) Land $496,800 Building $419,100 | $1,520,570 |
| 2023 | $11,889.00 | $875,500 Land $475,200 Building $400,300 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 11 Mason Rd in Zone X, an area of minimal flood risk.
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 |
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 11 Mason Rd 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 707 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: T-Mobile.
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