Middlesex County and Watertown City property record for 309 Main St, Watertown, MA 02472
| Property Type | Retail Stores (Personal Services, Photography, Travel) |
|---|---|
| Details | 4 ba · 12,646 sqft · built 1950 |
| Lot Size | 0.49 acres (21,361 sqft) |
| Owner | 2 Company Names on File |
| Tax Bill | $50,883 (2026) |
| Flood Zone | Zone X (minimal risk) |
| APN | 102030-04 |
| Primary APN | 102030-04 |
|---|---|
| Alternative APNs |
|
| Full Baths | 4 Baths |
|---|---|
| Half Baths | 4 Half Baths |
| Units | 3 Units |
| Stories | 1 Story |
| Building Area | 12,646 sqft Total Area |
| Gross Area | 12,844 sqft |
| Year Built | Built 1950 |
|---|---|
| Effective Year Built | Effective 1950 |
| Exterior Material | Concrete Block |
| Construction Type | Steel Frame |
| Roof Type | Flat |
| Roof Material | Other |
| Lot Area | 21,361 sqft (0.49 acres) |
| Heating System | Forced Air with A/C |
|---|---|
| Heating Fuel | Gas |
| Account Number | 5202 |
|---|---|
| Street Address | 309 MAIN ST |
| City | WATERTOWN |
| State | MA |
| Zip | 02472-2359 |
| Property Category | Commercial |
| Property Type | Commercial > Retail > Retail Stores (Personal Services, Photography, Travel) |
| Local Zoning Code | LB |
| Legal Block | 2 |
| Jurisdiction | WATERTOWN MA |
| Township / Civil Division | WATERTOWN TOWN |
| Census Block Group | 1 |
| Census Block | 1010 |
| Census Tract | 370103 |
309 Main St, a commercial property, is owned by a company.
Source: Middlesex County and Watertown City records, as of October 20, 2026
| Owner of Record | 2 Company Names on File |
|---|---|
| Mailing Address | PO BOX 215, READING, MA 01867-0315 |
| 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 | 2 Names on Deed |
|---|---|
| Record Updated | Oct 29, 2026 |
The 2026 property tax bill for 309 Main St was $50,883, up 2.8% 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 |
|---|---|---|
| 2026 | $50,883.00 (+2.8%) | $2,168,000 (-) Land $1,098,700 Building $1,069,300 |
| 2025 | $49,495.00 (+6.53%) | $2,168,000 (+7.69%) Land $1,098,700 Building $1,069,300 |
| 2024 | $46,462.00 (+22.05%) | $2,013,100 (+4.33%) Land $1,049,500 Building $963,600 |
| 2023 | $38,069.00 | $1,929,500 Land $995,700 Building $933,800 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 309 Main St in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective September 10, 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
The area around 309 Main 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 610 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 · Fiber in parts of the area | 1,500 / 50 |
| Verizon Fiber · Fixed Wireless in parts of the area | 980 / 880 |
| AT&T Fixed Wireless | 100 / 20 |
May also be available: T-Mobile.
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