Middlesex County and Cambridge City property record for 3 Walnut Ave, Cambridge, MA 02140
| Property Type | Duplex |
|---|---|
| Details | 5 bd · 3.5 ba · 3,633 sqft · built 1870 |
| Lot Size | 0.257 acres (11,179 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $545,000 (Jan 2015) |
| Tax Bill | $21,374 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 177-18 |
| Primary APN | 177-18 |
|---|---|
| Alternative APN |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 12 Rooms |
| Units | 2 Units |
| Stories | 3 Stories |
| Building Area | 3,633 sqft Living Area |
| Gross Area | 5,216 sqft |
| 1st Floor Area | 1,403 sqft |
| Basement Area | 1,315 sqft |
| Unfinished Basement | 1,161 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1870 |
|---|---|
| Effective Year Built | Effective 1870 |
| Architectural Style | Victorian |
| Exterior Material | Wood Siding |
| Construction Type | Brick |
| Roof Type | Mansard |
| Roof Material | Slate |
| Lot Area | 11,179 sqft (0.257 acres) |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | HVAC |
|---|---|
| Heating System | Hot Water |
| Heating Fuel | Gas |
| Street Address | 3 WALNUT AVE |
|---|---|
| City | CAMBRIDGE |
| State | MA |
| Zip | 02140-2706 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Local Zoning Code | A-2 |
| Legal Lot Number | 18 |
| Jurisdiction | CAMBRIDGE MA |
| Township / Civil Division | CAMBRIDGE |
| Census Block Group | 1 |
| Census Block | 1001 |
| Census Tract | 354500 |
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.
3 Walnut Ave, a duplex, is owned and occupied by two individuals who bought it in January 2015.
Source: Middlesex County and Cambridge City records, as of October 20, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 3 WALNUT AVE, CAMBRIDGE, MA 02140-2706 |
| Occupancy | Owner Occupied |
| 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 | Jan 2, 2015 · Amount on File |
| Deed Sale | Jan 2, 2015 · Amount on File |
| Prior Sale | Oct 7, 2013 · Amount on File |
| Deed Book / Page | 64750 / 552 |
| Transfer Doc | 064750-552 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 3 Walnut Ave was $21,374, up 6.5% 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 | $21,374.00 (+6.48%) | $3,366,000 (-0.73%) Land $1,897,500 Building $1,468,500 | $1,784,888 |
| 2024 | $20,074.00 (+5.19%) | $3,390,900 (+4.12%) Land $1,977,500 Building $1,413,400 | |
| 2023 | $19,084.00 | $3,256,600 Land $2,017,400 Building $1,239,200 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 3 Walnut Ave in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective September 10, 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
The area around 3 Walnut Ave 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 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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