350 Washington St, Cambridge, MA 02139 Property Records

Middlesex County and Cambridge City property record for 350 Washington St, Cambridge, MA 02139

Property Summary

Property Type	Single Family Home
Details	4 bd · 3 ba · 2,715 sqft · built 1910
Lot Size	0.055 acres (2,399 sqft)
Owner	2 Trust Names on File
Tax Bill	$8,858 (2025)
Deeds & Mortgages	Mar 2026 Mortgage Oct 2025 Mortgage + 4 more
Flood Zone	Zone X (minimal risk)
APN	`91-13`

Property Details

APN / Parcel Number

Primary APN	`91-13`
Alternative APN	`CAMB M:00091 L:00013`

Interior

Bedrooms	4 Beds
Full Baths	3 Baths
Half Baths	1 Half Bath
Total Rooms	9 Rooms
Stories	3 Stories
Building Area	2,715 sqft Living Area
Gross Area	3,730 sqft
1st Floor Area	1,035 sqft
Basement Area	840 sqft
Unfinished Basement	840 sqft

Exterior

Year Built	Built 1910
Effective Year Built	Effective 1910
Architectural Style	Conventional
Exterior Material	Other
Construction Type	Stone
Roof Type	Flat
Roof Material	Asphalt
Lot Area	2,399 sqft (0.055 acres)
Deck Area	Deck Area

Utilities, Heating & Cooling

Cooling System	HVAC
Heating System	Hot Water
Heating Fuel	Gas

Location & Zoning

Street Address	350 WASHINGTON ST
City	CAMBRIDGE
State	MA
Zip	02139-2721
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	C-1
Legal Lot Number	13
Jurisdiction	CAMBRIDGE MA
Township / Civil Division	CAMBRIDGE
Census Block Group	1
Census Block	1007
Census Tract	353101

Owner

350 Washington St is held in a trust since May 2016.

Source: Middlesex County and Cambridge City records, as of October 9, 2026

Owner of Record	2 Trust Names on File
Mailing Address	907 MASSACHUSETTS AVE, 300, CAMBRIDGE, MA 02139-3000
Owner Type	Company
Vesting	Trust

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Deeds, Mortgages & Sale History

Date	Document
Mar 27, 2026	Deed of Trust, Mortgage NEWTON CAPITAL LLC
Oct 31, 2025	Deed of Trust, Mortgage RFLF 4 LLC
Oct 11, 2022	Deed of Trust, Mortgage · Second Mortgage (Down Payment) NEWTON FUNDING LLC
Feb 28, 2024	Deed of Trust, Mortgage · Stand-Alone Refinance READING COOPERATIVE BANK
Jan 25, 2019	Deed of Trust, Mortgage · Commercial Mortgage DEDHAM INSTITUTION FOR SAVINGS
Sep 18, 2020	Deed of Trust, Mortgage · Commercial Mortgage DEDHAM INSTITUTION FOR SAVINGS

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	May 20, 2016
Deed Sale	May 20, 2016
Deed Document Number	201679433
Deed Book / Page	67285 / 294
Record Updated	Oct 29, 2026

March 2026: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CAMBRIDGE MA
Property Address	350 WASHINGTON ST, CAMBRIDGE, MA 02139-2721
Transaction Type	Mortgage
Record Updated	Apr 15, 2026

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	085394-392
Date	Mar 27, 2026
Book Page	85394/392
Instrument	33653

Lender

Name	NEWTON CAPITAL LLC

Agreement

Amount	Amount on Record

October 2025: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CAMBRIDGE MA
Property Address	350 WASHINGTON ST, CAMBRIDGE, MA 02139-2721
Transaction Type	Mortgage
Record Updated	Nov 19, 2025

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	084813-286
Date	Oct 31, 2025
Book Page	84813/286
Instrument	132810

Lender

Name	RFLF 4 LLC

Agreement

Amount	Amount on Record

October 2022: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CAMBRIDGE MA
Property Address	350 WASHINGTON ST, CAMBRIDGE, MA 02139-2721
Transaction Type	Mortgage
Record Updated	Oct 31, 2025

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0080811-49
Date	Oct 11, 2022
Book Page	80811/49
Instrument	152147

Lender

Name	NEWTON FUNDING LLC

Agreement

Type	Second Mortgage (Down Payment)
Amount	Amount on Record

February 2024: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CAMBRIDGE MA
Property Address	350 WASHINGTON ST, CAMBRIDGE, MA 02139-2721
Transaction Type	Mortgage
Record Updated	Oct 31, 2025

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	00082522-4
Date	Feb 28, 2024
Book Page	82522/4
Instrument	19739

Lender

Name	READING COOPERATIVE BANK
Type	Bank

Agreement

Type	Stand-Alone Refinance
Amount	Amount on Record

January 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CAMBRIDGE MA
Property Address	350 WASHINGTON ST, CAMBRIDGE, MA 02139-2721
Transaction Type	Mortgage
Record Updated	Feb 5, 2021

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	72162-545
Date	Jan 25, 2019
Book Page	72162/545
Instrument	10566

Lender

Name	DEDHAM INSTITUTION FOR SAVINGS
Type	Funding / Finance Company

Agreement

Type	Commercial Mortgage
Amount	Amount on Record

September 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CAMBRIDGE MA
Property Address	350 WASHINGTON ST, CAMBRIDGE, MA 02139-2721
Transaction Type	Mortgage
Record Updated	Feb 5, 2021

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	75649-231
Date	Sep 18, 2020
Book Page	75649/231
Instrument	164873

Lender

Name	DEDHAM INSTITUTION FOR SAVINGS
Type	Funding / Finance Company

Agreement

Type	Commercial Mortgage
Amount	Amount on Record

Tax Assessment & Valuation

The 2025 property tax bill for 350 Washington St was $8,858, up 6.2% from the year before.

Source: Middlesex County and Cambridge City assessment roll, as of April 14, 2026

Property Jurisdictions

Type	Name
State	Massachusetts
County	Middlesex County
Municipality	Cambridge City
Unified School District	Cambridge School District (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2025	$8,858.00 (+6.16%)	$1,395,000 (-1.02%) Land $562,900 Building $832,100	$7,608,170 (+107.51%)
2024	$8,344.00 (+9.79%)	$1,409,400 (+8.67%) Land $612,800 Building $796,600	$3,666,430
2023	$7,600.00	$1,296,900 Land $608,100 Building $688,800

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

Flood

FEMA maps place 350 Washington St 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.

Wildfire

The area around 350 Washington St 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.

Drinking Water

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

Violations Reported to EPA

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.

Internet Providers

Source: FCC Broadband Data Collection, based on 1,159 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
Netafy Fixed Wireless	641 / 143
T-Mobile Fixed Wireless	100 / 20
AT&T Fixed Wireless	100 / 20

May also be available: Astound Broadband, Starry.

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