Middlesex County and Cambridge City property record for 204 Sidney St, Cambridge, MA 02139
| Property Type | Mixed Use Commercial Office / Residential |
|---|---|
| Details | 4 bd · 4 ba · 5,474 sqft · built 1902 |
| Lot Size | 0.149 acres (6,508 sqft) |
| Owner | 2 Company Names on File |
| Last Sale | $28,400 (Feb 1976) |
| Flood Zone | Zone X (minimal risk) |
| APN | 66-96 |
| Primary APN | 66-96 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 4 Baths |
| Total Rooms | 10 Rooms |
| Units | 2 Units |
| Stories | 2 Stories |
| Building Area | 5,474 sqft Total Area |
| Gross Area | 6,648 sqft |
| 1st Floor Area | 2,559 sqft |
| Basement Area | 783 sqft |
| Unfinished Basement | 783 sqft |
| Year Built | Built 1902 |
|---|---|
| Effective Year Built | Effective 1995 |
| Architectural Style | Conventional |
| Exterior Material | Brick |
| Construction Type | Brick |
| Roof Type | Flat |
| Roof Material | Other |
| Lot Area | 6,508 sqft (0.149 acres) |
| Cooling System | HVAC |
|---|---|
| Heating System | Hot Water |
| Heating Fuel | Gas |
| Street Address | 204 SIDNEY ST |
|---|---|
| City | CAMBRIDGE |
| State | MA |
| Zip | 02139 |
| Property Category | Commercial |
| Property Type | Commercial > Office > Mixed Use Commercial Office / Residential |
| Local Zoning Code | SD-8A |
| Legal Lot Number | 96 |
| Jurisdiction | CAMBRIDGE MA |
| Township / Civil Division | CAMBRIDGE |
| Census Block Group | 2 |
| Census Block | 2002 |
| Census Tract | 353200 |
Source: Middlesex County and Cambridge City records · APN 66-96
Assessment roll updated April 14, 2026 · Last verified August 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Company Names on File |
|---|---|
| Mailing Address | 202 SIDNEY ST, CAMBRIDGE, MA 02139-4218 |
| Owner Type | Company |
| Vesting | Trust, Revocable Trust |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Feb 18, 1976 · Amount on Record |
| Deed Sale | Feb 18, 1976 · Amount on Record |
| Last Transfer Date | Jul 03, 2024 |
| Transfer Doc | 0000079298 |
| Record Updated | Sep 20, 2026 |
Source: Middlesex County and Cambridge City records · Assessment roll updated April 14, 2026 · Last verified August 2026
| Type | Name |
|---|---|
| State | Massachusetts |
| County | Middlesex County |
| Municipality | Cambridge City |
| Unified School District | Cambridge School District (PK - 12) |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
| Year | Assessed Value | Assessed Market Value |
|---|---|---|
| 2025 | $1,944,700 (-0.3%) Land $1,258,700 Building $686,000 | $4,362,875 (+26.13%) |
| 2024 | $1,950,500 (-0.06%) Land $1,311,400 Building $639,100 | $3,459,045 |
| 2023 | $1,951,700 Land $1,298,200 Building $653,500 |
Source: FEMA National Flood Hazard Layer as of September 10, 2026 · FEMA NFIP claims and policies as of September 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 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 | 2 in force |
| Wildfire Risk | Not rated no burnable land within ember reach |
|---|
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: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 2,000 |
| AT&T Fixed Wireless | 100 / 20 |
| T-Mobile USA Fixed Wireless | 100 / 20 |
May also be available: Starry, Verizon.
Based on FCC filings for 107 locations within half a mile of this property.
Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026
| Water System | CAMBRIDGE WATER DEPARTMENT serves 118,214 people |
|---|---|
| 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 as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. The full violation and enforcement history is in the system's EPA record.
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