Middlesex County and Watertown City property record for 20 Common St, Watertown, MA 02472
| Property Type | Condominium |
|---|---|
| Details | 3 bd · 3 ba · 2,642 sqft · built 2006 |
| Lot Size | 0.468 acres (20,401 sqft) |
| Owner | Individual Name on Record |
| Last Sale | $940,000 (Aug 2008) |
| Tax Bill | $16,050 (2026) |
| Deeds & Mortgages | Nov 2018 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 10104 |
| Primary APN | 10104 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 3 Baths |
| Half Baths | 2 Half Baths |
| Total Rooms | 8 Rooms |
| Stories | 2 Stories |
| Building Area | 2,642 sqft Living Area |
| Gross Area | 4,137 sqft |
| Basement Area | 963 sqft |
| Unfinished Basement | 963 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 2006 |
|---|---|
| Effective Year Built | Effective 2006 |
| Architectural Style | Other |
| Exterior Material | Wood Siding |
| Construction Type | Frame |
| Roof Type | Hip |
| Roof Material | Asphalt |
| Lot Area | 20,401 sqft |
| Cooling System | HVAC |
|---|---|
| Heating System | Forced Air with A/C |
| Heating Fuel | Gas |
| Account Number | 10104 |
|---|---|
| Street Address | 20 COMMON ST |
| City | WATERTOWN |
| State | MA |
| Zip | 02472-3458 |
| Property Category | Residential |
| Property Type | Residential > Condominium / Townhouse > Condominium |
| Local Zoning Code | HIST |
| Legal Block | 8 |
| Legal Lot Number | B |
| Jurisdiction | WATERTOWN MA |
| Township / Civil Division | WATERTOWN TOWN |
| Census Block Group | 1 |
| Census Block | 1013 |
| Census Tract | 370202 |
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 | Individual Name on Record |
|---|---|
| Mailing Address | 20 COMMON ST, WATERTOWN, MA 02472-3458 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Aug 26, 2008 · Amount on Record |
| Deed Sale | Aug 26, 2008 · Amount on Record |
| Deed Document Number | 2008141744 |
| Deed Book / Page | 51616 / 389 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | WATERTOWN MA |
| Property Address | 20 COMMON ST, WATERTOWN, MA 02472-3458 |
| Transaction Type | Mortgage |
| Record Updated | Feb 5, 2021 |
| Name | Verified Name |
|---|
| Document Number | 71927-129 |
|---|---|
| Date | Nov 27, 2018 |
| Book Page | 71927/129 |
| Instrument | 180167 |
| Name | BOSTON PRIVATE BANK & TRUST |
|---|---|
| Type | Bank |
| Amount | Amount Recorded |
|---|---|
| Term | 300 Months |
| Due | Nov 1, 2043 |
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 | $16,050.00 (+4.45%) | $1,315,600 (-) Building $1,315,600 | $1,206,662 (-16.64%) |
| 2025 | $15,366.00 (+8.45%) | $1,315,600 (+8.64%) Building $1,315,600 | $1,447,515 (-5.38%) |
| 2024 | $14,169.00 (-12.57%) | $1,211,000 (+1.47%) Building $1,211,000 | $1,529,880 |
| 2023 | $16,206.00 | $1,193,400 Building $1,193,400 |
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 | 3 units insured incl. 2 condo units |
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 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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