Middlesex County and Cambridge City property record for 491 Green St, Cambridge, MA 02139
| Property Type | Triplex |
|---|---|
| Details | 3 bd · 3.5 ba · 2,556 sqft · built 1916 |
| Lot Size | 0.04 acres (1,763 sqft) |
| Owner | Individual Name on Record |
| Tax Bill | $8,607 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 119-105 |
| Primary APN | 119-105 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 15 Rooms |
| Units | 3 Units |
| Stories | 3 Stories |
| Building Area | 2,556 sqft Living Area |
| Gross Area | 3,855 sqft |
| 1st Floor Area | 840 sqft |
| Basement Area | 840 sqft |
| Unfinished Basement | 840 sqft |
| Year Built | Built 1916 |
|---|---|
| Effective Year Built | Effective 1916 |
| Architectural Style | Other |
| Exterior Material | Other |
| Construction Type | Brick |
| Roof Type | Flat |
| Roof Material | Tar & Gravel |
| Lot Area | 1,763 sqft (0.04 acres) |
| Deck Area | Deck Area |
| Cooling System | HVAC |
|---|---|
| Heating System | Hot Water |
| Heating Fuel | Gas |
| Street Address | 491 GREEN ST |
|---|---|
| City | CAMBRIDGE |
| State | MA |
| Zip | 02139-3244 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Triplex |
| Local Zoning Code | C-1 |
| Legal Lot Number | 105 |
| Jurisdiction | CAMBRIDGE MA |
| Township / Civil Division | CAMBRIDGE |
| Census Block Group | 5 |
| Census Block | 5003 |
| Census Tract | 359400 |
Source: Middlesex County and Cambridge City records, as of October 9, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Individual Name on Record |
|---|---|
| Mailing Address | 10 FLORENCE ST, CAMBRIDGE, MA 02139-4635 |
| Owner Type | Individual |
| Deed Names | Name on Deed |
|---|---|
| Record Updated | Oct 29, 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) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2025 | $8,607.00 (+4.3%) | $1,355,400 (-2.76%) Land $724,100 Building $631,300 |
| 2024 | $8,252.00 (+4.46%) | $1,393,900 (+3.39%) Land $785,700 Building $608,200 |
| 2023 | $7,900.00 | $1,348,200 Land $800,300 Building $547,900 |
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
| 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.
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 1,046 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 · Fiber in parts of the area | 1,000 / 75 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Astound Broadband, Netafy, Starry.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures