Middlesex County and Watertown City property record for 511 Main St, Watertown, MA 02472
| Property Type | Duplex |
|---|---|
| Details | 4 bd · 2 ba · 2,184 sqft · built 1910 |
| Lot Size | 0.117 acres (5,113 sqft) |
| Owner | 2 Company Names on Record |
| Tax Bill | $10,558 (2026) |
| Flood Zone | Zone X (minimal risk) |
| APN | 32990-24 |
| Primary APN | 32990-24 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 10 Rooms |
| Units | 2 Units |
| Stories | 2 Stories |
| Building Area | 2,184 sqft Living Area |
| Gross Area | 4,716 sqft |
| Basement Area | 1,092 sqft |
| Unfinished Basement | 1,092 sqft |
| Year Built | Built 1910 |
|---|---|
| Effective Year Built | Effective 1910 |
| Architectural Style | Other |
| Exterior Material | Aluminum/Vinyl |
| Construction Type | Frame |
| Roof Type | Gable |
| Roof Material | Asphalt |
| Lot Area | 5,113 sqft (0.117 acres) |
| Heating System | Hot Water |
|---|---|
| Heating Fuel | Oil |
| Account Number | 7776 |
|---|---|
| Street Address | 511 MAIN ST |
| City | WATERTOWN |
| State | MA |
| Zip | 02472-2218 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Local Zoning Code | S-6 |
| Legal Block | 4 |
| Legal Lot Number | 77 |
| Jurisdiction | WATERTOWN MA |
| Township / Civil Division | WATERTOWN TOWN |
| Census Block Group | 3 |
| Census Block | 3015 |
| Census Tract | 370101 |
Source: Middlesex County and Watertown City records, as of October 20, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Company Names on Record |
|---|---|
| Mailing Address | 31 PLYMOUTH AVE, BELMONT, MA 02478-4245 |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | 2 Names on Deed |
|---|---|
| Record Updated | Oct 29, 2026 |
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 | $10,558.00 (+7.24%) | $865,400 (+2.67%) Land $455,700 Building $409,700 | $912,707 |
| 2025 | $9,845.00 (+9.33%) | $842,900 (+9.51%) Land $455,700 Building $387,200 | |
| 2024 | $9,005.00 (-12.62%) | $769,700 (+1.44%) Land $456,100 Building $313,600 | |
| 2023 | $10,305.00 | $758,800 Land $448,700 Building $310,100 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
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.
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.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures