Middlesex County and Cambridge City property record for 21 Dover St, Cambridge, MA 02140
| Property Type | Duplex |
|---|---|
| Details | 5 bd · 3.5 ba · 2,835 sqft · built 1860 |
| Lot Size | 0.116 acres (5,039 sqft) |
| Owner | 2 Trust Names on File |
| Tax Bill | $9,371 (2025) |
| Deeds & Mortgages | Jan 2026 Line of Credit |
| Flood Zone | Zone X (minimal risk) |
| APN | 182-6 |
| Primary APN | 182-6 |
|---|---|
| Alternative APN |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 14 Rooms |
| Units | 2 Units |
| Stories | 3 Stories |
| Building Area | 2,835 sqft Living Area |
| Gross Area | 5,050 sqft |
| 1st Floor Area | 1,134 sqft |
| Basement Area | 1,134 sqft |
| Unfinished Basement | 1,134 sqft |
| Year Built | Built 1860 |
|---|---|
| Effective Year Built | Effective 1860 |
| Architectural Style | Other |
| Exterior Material | Asbestos |
| Construction Type | Brick |
| Roof Type | Gable |
| Roof Material | Asphalt |
| Lot Area | 5,039 sqft (0.116 acres) |
| Garage Type | Covered |
| Parking Spaces | 6 Parking Spaces |
| Cooling System | HVAC |
|---|
| Street Address | 21 DOVER ST |
|---|---|
| City | CAMBRIDGE |
| State | MA |
| Zip | 02140-1205 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Local Zoning Code | B |
| Legal Lot Number | 6 |
| Jurisdiction | CAMBRIDGE MA |
| Township / Civil Division | CAMBRIDGE |
| Census Block Group | 3 |
| Census Block | 3009 |
| Census Tract | 355000 |
Source: Middlesex County and Cambridge City assessment roll, 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 Trust Names on File |
|---|---|
| Mailing Address | 19 DOVER ST, CAMBRIDGE, MA 02140-1205 |
| Owner Type | Individual |
| Vesting | Trust |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Record Updated | Jun 8, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CAMBRIDGE MA |
| Property Address | 21 DOVER ST, CAMBRIDGE, MA 02140-1205 |
| Transaction Type | Mortgage |
| Record Updated | Feb 4, 2026 |
| Name | Verified Name |
|---|
| Document Number | 085123-139 |
|---|---|
| Date | Jan 15, 2026 |
| Book Page | 85123/139 |
| Instrument | 4840 |
| Name | CITIZENS BANK |
|---|---|
| Type | Bank |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Term | 289 Months |
| Due | Feb 1, 2050 |
| Rate Type | Adjustable Rate |
|---|
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 |
|---|---|---|
| 2025 | $9,371.00 (+7.56%) | $1,475,800 (+0.29%) Land $620,000 Building $855,800 |
| 2024 | $8,712.00 | $1,471,600 Land $647,600 Building $824,000 |
Assessed value is set for property tax purposes and is not a market price estimate.
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 7 (15% premium discount) |
| Nearby Flood Policies | 2 in force |
| Nearby Flood Claims | 2 (2010) |
| Claims Outside the SFHA | 2 of 2 |
| Most Recent Claim | Mar 2010 · Severe Storms And Flooding |
| Claims by Event |
|
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 |
|---|
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 1,241 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 2,000 |
| Radiate Holdings Cable · Fiber in parts of the area | 1,500 / 50 |
| Netafy Fixed Wireless | 564 / 125 |
| T-Mobile USA Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
May also be available: Starry, Verizon.
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