Middlesex County and Cambridge City property record for 21 Salem St, Cambridge, MA 02139
| Property Type | Condominium |
|---|---|
| Details | 3 bd · 2 ba · 958 sqft |
| Lot Size | 0.11 acres (4,795 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $212,000 (Jul 1997) |
| Tax Bill | $6,090 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 93-93-21 |
| Primary APN | 93-93-21 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 8 Rooms |
| Stories | 1 Story |
| Building Area | 958 sqft Living Area |
| Gross Area | 1,756 sqft |
| 1st Floor Area | 958 sqft |
| Basement Area | 798 sqft |
| Unfinished Basement | 798 sqft |
| Central Vacuum | Central Vacuum |
| Architectural Style | Other |
|---|---|
| Lot Area | 4,795 sqft |
| Deck Area | Deck Area |
| Heating System | Forced Air with A/C |
|---|
| Street Address | 21 SALEM ST |
|---|---|
| City | CAMBRIDGE |
| State | MA |
| Zip | 02139 |
| Property Category | Residential |
| Property Type | Residential > Condominium / Townhouse > Condominium |
| Local Zoning Code | B |
| Legal Subdivision | AUBURN COURT |
| Legal Lot Number | 9300021 |
| Jurisdiction | CAMBRIDGE MA |
| Township / Civil Division | CAMBRIDGE |
| Census Block Group | 3 |
| Census Block | 3001 |
| Census Tract | 353200 |
21 Salem St, a condominium, is owned by two individuals who bought it in July 1997.
Source: Middlesex County and Cambridge City records, as of July 20, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 21 WATSON ST, CAMBRIDGE, MA 02139-4021 |
| Owner Type | Individual |
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 |
|---|---|
| Last Sale | Jul 31, 1997 · Amount on File |
| Deed Sale | Jul 31, 1997 · Amount on File |
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 21 Salem St was $6,090, up 9.6% from the year before.
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) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $6,090.00 (+9.57%) | $959,100 (+2.15%) Building $959,100 | $940,785 (+2.48%) |
| 2024 | $5,558.00 | $938,900 Building $938,900 | $917,985 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 21 Salem 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 |
| Community Rating System | Class 9 (5% premium discount) |
| Nearby Flood Policies | 4 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 21 Salem 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 | 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 910 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 |
| Verizon Fixed Wireless | 1,000 / 75 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
May also be available: Starry.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures