Middlesex County and Watertown City property record for 11 Patten St, Watertown, MA 02472
| Property Type | Duplex |
|---|---|
| Details | 3 bd · 2 ba · 1,985 sqft · built 1884 |
| Lot Size | 0.1 acres (4,364 sqft) |
| Owner | Company Name on File |
| Last Sale | $3,500,000 (Feb 2007) |
| Tax Bill | $10,432 (2026) |
| Flood Zone | Zone X (minimal risk) |
| APN | 46650-05 |
| Primary APN | 46650-05 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 9 Rooms |
| Units | 2 Units |
| Stories | 2 Stories |
| Building Area | 1,985 sqft Living Area |
| Gross Area | 3,896 sqft |
| Basement Area | 1,070 sqft |
| Unfinished Basement | 1,070 sqft |
| Year Built | Built 1884 |
|---|---|
| Effective Year Built | Effective 1884 |
| Architectural Style | Other |
| Exterior Material | Aluminum/Vinyl |
| Construction Type | Frame |
| Roof Type | Gable |
| Roof Material | Asphalt |
| Lot Area | 4,364 sqft (0.1 acres) |
| Heating System | Hot Water |
|---|---|
| Heating Fuel | Gas |
| Account Number | 24 |
|---|---|
| Street Address | 11 PATTEN ST |
| City | WATERTOWN |
| State | MA |
| Zip | 02472-3933 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Local Zoning Code | CB |
| Legal Block | 8 |
| Jurisdiction | WATERTOWN MA |
| Township / Civil Division | WATERTOWN TOWN |
| Census Block Group | 2 |
| Census Block | 2007 |
| Census Tract | 370401 |
11 Patten St, a duplex, is owned by a company that bought it in February 2007.
Source: Middlesex County and Watertown City records, as of October 20, 2026
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 414 MAIN ST, WATERTOWN, MA 02472-2244 |
| 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 | Feb 28, 2007 · Amount on File |
| Deed Sale | Feb 28, 2007 · Amount on File |
| Deed Document Number | 200737110 |
| Deed Book / Page | 49053 / 172 |
| Record Updated | Oct 29, 2026 |
The 2026 property tax bill for 11 Patten St was $10,432, up 7.1% 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 | $10,432.00 (+7.12%) | $855,100 (+2.55%) Land $462,500 Building $392,600 | $878,407 |
| 2025 | $9,739.00 (+9.61%) | $833,800 (+9.8%) Land $462,500 Building $371,300 | |
| 2024 | $8,885.00 (-11.75%) | $759,400 (+2.43%) Land $448,900 Building $310,500 | |
| 2023 | $10,068.00 | $741,400 Land $434,400 Building $307,000 |
Assessed value is set for property tax purposes, not a market price estimate; it is a fraction of this property's market value.
FEMA maps place 11 Patten St 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 | 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.
The area around 11 Patten 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 557 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable · Fiber in parts of the area | 2,000 / 2,000 |
| Astound Broadband Cable | 1,500 / 50 |
May also be available: AT&T, Starry, T-Mobile, Verizon.
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