Middlesex County and Cambridge City property record for 20 Clay St, Cambridge, MA 02140
| Property Type | Exempt (Full or Partial) |
|---|---|
| Details | 9 bd · 3.5 ba · 4,056 sqft · built 1911 |
| Lot Size | 0.138 acres (5,999 sqft) |
| Owner | 2 Individual Names on Record |
| Flood Zone | Zone X (minimal risk) |
| APN | CAMB M:00193 L:00046 |
| Primary APN | CAMB M:00193 L:00046 |
|---|
| Bedrooms | 9 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 18 Rooms |
| Units | 3 Units |
| Stories | 3 Stories |
| Building Area | 4,056 sqft Total Area |
| Gross Area | 6,038 sqft |
| Basement Area | 1,352 sqft |
| Unfinished Basement | 1,352 sqft |
| Year Built | Built 1911 |
|---|---|
| Effective Year Built | Effective 1911 |
| Architectural Style | Other |
| Exterior Material | Aluminum/Vinyl |
| Construction Type | Concrete |
| Roof Type | Flat |
| Roof Material | Other |
| Lot Area | 5,999 sqft (0.138 acres) |
| Parking Spaces | 4 Parking Spaces |
| Heating System | Hot Water |
|---|---|
| Heating Fuel | Gas |
| Street Address | 20 CLAY ST |
|---|---|
| City | CAMBRIDGE |
| State | MA |
| Zip | 02140-2422 |
| Property Category | Other |
| Property Type | Other > Exempt (Full or Partial) |
| Local Zoning Code | B |
| Legal Lot Number | 46 |
| Jurisdiction | CAMBRIDGE MA |
| Township / Civil Division | CAMBRIDGE |
| Census Block Group | 2 |
| Census Block | 2013 |
| Census Tract | 354902 |
Source: Middlesex County and Cambridge City records, as of April 14, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Individual Names on Record |
|---|---|
| Mailing Address | 20 CLAY ST, CAMBRIDGE, MA 02140-2422 |
| Owner Type | Individual |
| Deed Names | 2 Names on Deed |
|---|---|
| Record Updated | Jun 8, 2026 |
Source: Middlesex County and Cambridge City assessment roll, as of April 14, 2026
| Type | Name |
|---|---|
| State | Massachusetts |
| County | Middlesex County |
| Municipality | Cambridge City |
| Unified School District | Cambridge School District (PK - 12) |
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 |
| Community Rating System | Class 9 (5% premium discount) |
| 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.
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 | CAMBRIDGE WATER DEPARTMENT serves 118,214 people · EPA ID MA3049000 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Jun 2023 |
| Lead | 8 ppb (2021–2023) 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 866 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 2,000 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
May also be available: Astound Broadband, Starry, Verizon.
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