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21 Berkeley St, Cambridge, MA 02138 Property Records

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

Property Summary

Property TypeSingle Family Home
Details5 bd · 5 ba · 4,851 sqft · built 1855
Lot Size0.325 acres (14,148 sqft)
Owner2 Company Names on Record
Tax Bill$35,606 (2025)
Deeds & MortgagesJan 2026 Transfer
Flood ZoneZone X (minimal risk)
APN216-33

Property Details

APN / Parcel Number

Primary APN216-33
Alternative APN
  • CAMB M:00216 L:00033

Interior

Bedrooms5 Beds
Full Baths5 Baths
Half Baths2 Half Baths
Total Rooms13 Rooms
Stories3 Stories
Building Area4,851 sqft Living Area
Gross Area7,926 sqft
1st Floor Area2,121 sqft
Basement Area2,121 sqft
Unfinished Basement2,121 sqft
Fireplaces1 Fireplace
FireplaceFireplace

Exterior

Year BuiltBuilt 1855
Effective Year BuiltEffective 1855
Architectural StyleColonial
Exterior MaterialWood Siding
Construction TypeBrick
Roof TypeGable
Roof MaterialSlate
Lot Area14,148 sqft (0.325 acres)
Parking Spaces2 Parking Spaces

Utilities, Heating & Cooling

Cooling SystemHVAC
Heating SystemHot Water
Heating FuelGas

Location & Zoning

Street Address21 BERKELEY ST
CityCAMBRIDGE
StateMA
Zip02138-3409
Property CategoryResidential
Property TypeResidential > Single Family > Home
Local Zoning CodeA-2
Legal Lot Number33
JurisdictionCAMBRIDGE MA
Township / Civil DivisionCAMBRIDGE
Census Block Group2
Census Block2003
Census Tract354100

Historic Designation

Source: NPS National Register of Historic Places, as of August 1, 2026

Historic DistrictWithin the Berkeley Street Historic District (Boundary Increase)
listed 1986 · 8 contributing resources · NRIS 86001265

Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.

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 Record2 Company Names on Record
Mailing Address21 BERKELEY ST, CAMBRIDGE, MA 02138-3409
OccupancyOwner Occupied
Owner TypeCompany
VestingTrust, Revocable Trust

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names2 Names on Deed
Last SaleJun 14, 2012
Deed SaleJun 14, 2012
Prior SaleMay 28, 1998 · Amount on Record
Deed Book / Page59292 / 323
Last Transfer DateDec 8, 2025
Transfer Doc085177-136
Record UpdatedSep 20, 2026

January 2026: Quit Claim Deed, Transfer

Document TypeQuit Claim Deed
JurisdictionCAMBRIDGE MA
Recording DateJan 30, 2026
Property Address21 BERKELEY ST, CAMBRIDGE, MA 02138-3409
Document Number085177-136
Book / Page85177 / 136
Instrument DateDec 8, 2025
Instrument10870
Transaction TypeTransfer
Record UpdatedFeb 18, 2026

Transaction

Tax$0.00
Amount AccuracyNo Consideration Stated
Additional
  • Quitclaim
  • Intrafamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address21 BERKELEY ST, CAMBRIDGE, MA 02138-3409

Tax Assessment & Valuation

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

Property Jurisdictions

TypeName
StateMassachusetts
CountyMiddlesex County
MunicipalityCambridge City
Unified School DistrictCambridge School District (PK - 12)

Tax Bill & Assessment History

YearTax BillAssessed ValueAssessed Market Value
2025$35,606.00 (+9.81%)$5,607,300 (+2.38%) Land $3,155,900 Building $2,451,400$5,758,235 (+4.47%)
2024$32,424.00$5,477,100 Land $3,130,700 Building $2,346,400$5,511,615

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 ZoneZone X
minimal risk
Flood Insurance RequirementNot required
lenders may require it
Community Rating SystemClass 9 (5% premium discount)
Nearby Flood Policies9 in force
Nearby Flood Claims3 (1978–2018)
Claims Outside the SFHA2 of 3
Most Recent ClaimDec 2018 · other causes

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 RiskNot 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 SystemCAMBRIDGE WATER DEPARTMENT
serves 118,214 people · EPA ID MA3049000
Water SourceSurface water
Last State InspectionJun 2023
Lead8 ppb (2021–2023)
action level 15 ppb

Violations Reported to EPA

Water QualityNone
last 10 years
Treatment and ProcedureNone
last 10 years
Monitoring and ReportingNone
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

ProviderMax 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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