Middlesex County and Cambridge City property record for 21 Washington Ave, Cambridge, MA 02140
| Property Type | Single Family Home |
|---|---|
| Details | 7 bd · 4.5 ba · 5,328 sqft · built 1908 |
| Lot Size | 0.386 acres (16,833 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $1,450,000 (Mar 1999) |
| Tax Bill | $34,028 (2025) |
| Deeds & Mortgages | Sep 2018 Line of Credit |
| Flood Zone | Zone X (minimal risk) |
| APN | 211-36 |
| Primary APN | 211-36 |
|---|---|
| Alternative APN |
|
| Bedrooms | 7 Beds |
|---|---|
| Full Baths | 4.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 12 Rooms |
| Stories | 3 Stories |
| Building Area | 5,328 sqft Living Area |
| Gross Area | 8,897 sqft |
| 1st Floor Area | 2,051 sqft |
| Basement Area | 2,051 sqft |
| Unfinished Basement | 2,051 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1908 |
|---|---|
| Effective Year Built | Effective 1908 |
| Architectural Style | Tudor |
| Exterior Material | Stucco |
| Construction Type | Stone |
| Roof Type | Gable |
| Roof Material | Slate |
| Lot Area | 16,833 sqft (0.386 acres) |
| Garage Type | Covered |
| Parking Spaces | 4 Parking Spaces |
| Deck Area | Deck Area |
| Cooling System | HVAC |
|---|---|
| Heating Fuel | Gas |
| Street Address | 21 WASHINGTON AVE |
|---|---|
| City | CAMBRIDGE |
| State | MA |
| Zip | 02140-2834 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | A-2 |
| Legal Subdivision | CAMBRIDGE |
| Legal Lot Number | 36 |
| Jurisdiction | CAMBRIDGE MA |
| Township / Civil Division | CAMBRIDGE |
| Census Block Group | 1 |
| Census Block | 1003 |
| Census Tract | 354000 |
Source: NPS National Register of Historic Places, as of August 1, 2026
| Historic District | Within the Avon Hill Historic District listed 1983 · 76 contributing resources · NRIS 83000782 |
|---|
Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.
Source: Middlesex County and Cambridge City records, as of July 20, 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 | 21 WASHINGTON AVE, CAMBRIDGE, MA 02140-2834 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Mar 1, 1999 · Amount on Record |
| Deed Sale | Mar 1, 1999 · Amount on Record |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CAMBRIDGE MA |
| Property Address | 21 WASHINGTON AVE, CAMBRIDGE, MA 02140-2834 |
| Document Number | 71598-146 |
| Instrument Date | Sep 5, 2018 |
| Transaction Type | Mortgage |
| Record Updated | Oct 2, 2018 |
| Name | Verified Name |
|---|---|
| Relationship | Husband and Wife |
| Address | 21 WASHINGTON AVE CAMBRIDGE MA 021402834, CAMBRIDGE, MA 02140-2834 |
| Document Number | 71598-146 |
|---|---|
| Date | Sep 10, 2018 |
| Book Page | 071598/000146 |
| Instrument | 139677 |
| Name | CAMBRIDGE TR |
|---|
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Term | 240 Months |
| Due | Sep 9, 2038 |
| 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 | Assessed Market Value |
|---|---|---|---|
| 2025 | $34,028.00 (+9.09%) | $5,358,800 (+1.7%) Land $2,277,000 Building $3,081,800 | $4,483,240 (+0.28%) |
| 2024 | $31,194.00 (+8.42%) | $5,269,200 (+7.32%) Land $2,372,900 Building $2,896,300 | $4,470,510 |
| 2023 | $28,771.00 | $4,909,800 Land $2,420,900 Building $2,488,900 |
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 |
| 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 782 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 2,000 |
| Verizon Fixed Wireless | 1,000 / 75 |
| AT&T Fixed Wireless | 100 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Astound Broadband, Starry.
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