21 Walker St, Cambridge, MA 02138 Property Records

Middlesex County and Cambridge City property record for 21 Walker St, Cambridge, MA 02138

Property Summary

Property Type	Single Family Home
Details	4 bd · 4.5 ba · 2,414 sqft · built 1894
Lot Size	0.058 acres (2,535 sqft)
Owner	2 Individual Names on Record
Last Sale	$3,880,000 (Jun 2017)
Tax Bill	$27,831 (2025)
Deeds & Mortgages	Oct 2020 Refinance Jun 2017 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`214-24`

Property Details

APN / Parcel Number

Primary APN	`214-24`
Alternative APN	`CAMB M:00214 L:00024`

Interior

Bedrooms	4 Beds
Full Baths	4.5 Baths
Half Baths	1 Half Bath
Total Rooms	8 Rooms
Stories	3 Stories
Building Area	2,414 sqft Living Area
Gross Area	3,846 sqft
1st Floor Area	981 sqft
Basement Area	981 sqft
Unfinished Basement	231 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace
Central Vacuum	Central Vacuum

Exterior

Year Built	Built 1894
Effective Year Built	Effective 1894
Architectural Style	Conventional
Exterior Material	Wood Siding
Construction Type	Brick
Roof Type	Gable
Roof Material	Asphalt
Lot Area	2,535 sqft (0.058 acres)
Parking Spaces	1 Parking Space

Utilities, Heating & Cooling

Cooling System	HVAC
Heating System	Forced Air with A/C
Heating Fuel	Gas

Location & Zoning

Street Address	21 WALKER ST
City	CAMBRIDGE
State	MA
Zip	02138-2412
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	B
Legal Lot Number	24
Jurisdiction	CAMBRIDGE MA
Township / Civil Division	CAMBRIDGE
Census Block Group	2
Census Block	2004
Census Tract	354000

Owner

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 WALKER ST, CAMBRIDGE, MA 02138-2412
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Oct 7, 2020	Deed of Trust, Mortgage · Stand-Alone Refinance JPMORGAN CHASE BANK NA
Jun 9, 2017	Quit Claim Deed, Transfer CAMBRIDGE SVGS BK

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jun 9, 2017 · Amount on Record
Deed Sale	Jun 9, 2017 · Amount on Record
Prior Sale	Jun 13, 2006 · Amount on Record
Deed Book / Page	69409 / 482
Transfer Doc	069409-482
Record Updated	Oct 29, 2026

October 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CAMBRIDGE MA
Property Address	21 WALKER ST, CAMBRIDGE, MA 02138-2412
Transaction Type	Mortgage
Record Updated	Feb 5, 2021

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	75832-128
Date	Oct 7, 2020
Book Page	75832/128
Instrument	181642

Lender

Name	JPMORGAN CHASE BANK NA
Type	Bank

Agreement

Type	Stand-Alone Refinance
Amount	Amount Recorded
Term	361 Months
Due	Nov 1, 2050

June 2017: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	CAMBRIDGE MA
Recording Date	Jun 9, 2017
Property Address	21 WALKER ST, CAMBRIDGE, MA 02138-2412
Document Number	69409-482
Book / Page	69409 / 482
Instrument	86980
Transaction Type	Transfer
Record Updated	May 12, 2021

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$138.70
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	21 WALKER ST, CAMBRIDGE, MA 02138-2412

Mortgage

Document Number	694090484
Date	Jun 9, 2017
Instrument	69409/0484

Lender

Name	CAMBRIDGE SVGS BK

Agreement

Amount	Amount Recorded
Term	360 Months
Due	Jun 9, 2047

Tax Assessment & Valuation

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	$27,831.00 (+8.44%)	$4,382,900 (+1.1%) Land $1,237,500 Building $3,145,400	$4,339,220 (-17.46%)
2024	$25,665.00 (+9.24%)	$4,335,300 (+8.13%) Land $1,323,400 Building $3,011,900	$5,256,920
2023	$23,494.00	$4,009,300 Land $1,348,600 Building $2,660,700

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

Flood

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.

Wildfire

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 552 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 2,000
T-Mobile Fixed Wireless	100 / 20
AT&T Fixed Wireless	100 / 20

May also be available: Starry, Verizon.

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