20 Stone Ave, Somerville, MA 02143 Property Records

Middlesex County and Somerville City property record for 20 Stone Ave, Somerville, MA 02143

Property Summary

Property Type	Duplex
Details	6 bd · 3 ba · 3,311 sqft · built 1900
Lot Size	0.098 acres (4,250 sqft)
Owner	2 Company Names on Record
Tax Bill	$14,157 (2026)
Deeds & Mortgages	Dec 2023 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`73-D-13`

Property Details

APN / Parcel Number

Primary APN	`73-D-13`
Alternative APNs	`SOME M:73 B:D L:13` `11342140`

Interior

Bedrooms	6 Beds
Full Baths	3 Baths
Total Rooms	13 Rooms
Units	2 Units
Stories	3 Stories
Building Area	3,311 sqft Living Area
Gross Area	4,957 sqft
Basement Area	1,198 sqft
Unfinished Basement	1,198 sqft

Exterior

Year Built	Built 1900
Effective Year Built	Effective 1900
Architectural Style	Duplex Single
Exterior Material	Aluminum/Vinyl
Roof Type	Gable
Roof Material	Asphalt
Lot Area	4,250 sqft (0.098 acres)
Parking Spaces	3 Parking Spaces

Utilities, Heating & Cooling

Heating System	Forced Air with A/C
Heating Fuel	Gas

Location & Zoning

Account Number	11342140
Street Address	20 STONE AVE
City	SOMERVILLE
State	MA
Zip	02143-3006
Property Category	Residential
Property Type	Residential > Multi-Unit > Duplex
Local Zoning Code	NR
Legal Block	D
Legal Lot Number	13
Jurisdiction	SOMERVILLE MA
Township / Civil Division	SOMERVILLE
Census Block Group	2
Census Block	2010
Census Tract	351300

Owner

Source: Middlesex County and Somerville City records, as of October 20, 2026

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

Owner of Record	2 Company Names on Record
Mailing Address	18 STONE AVE, SOMERVILLE, MA 02143-3006
Owner Type	Company
Vesting	Trust, Revocable Trust

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jul 23, 2015
Deed Sale	Jul 23, 2015
Prior Sale	Aug 6, 1992 · Amount on Record
Last Transfer Date	Apr 18, 2025
Transfer Doc	083992-336
Record Updated	Oct 29, 2026

December 2023: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SOMERVILLE MA
Property Address	20 STONE AVE, SOMERVILLE, MA 02143-3006
Transaction Type	Mortgage
Record Updated	Jan 12, 2024

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	082355-328
Date	Dec 29, 2023
Book Page	82355/328
Instrument	148330

Lender

Name	WINTER HILL FSB
Type	Bank

Agreement

Type	ARM
Amount	Amount Recorded
Term	361 Months
Due	Jan 1, 2054

Interest

Rate Type	Adjustable Rate
Rate	7.38%
Type Change Date	Jan 1, 2031
Index	1-Year CMT

Tax Assessment & Valuation

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

Property Jurisdictions

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

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026	$14,157.00 (+5.36%)	$1,289,300 (+4.68%) Land $657,500 Building $631,800	$1,466,083
2025	$13,437.00 (+4.61%)	$1,231,600 (+0.87%) Land $626,200 Building $605,400
2024	$12,845.00 (+5.16%)	$1,221,000 (+3.36%) Land $626,200 Building $594,800
2023	$12,215.00	$1,181,300 Land $626,200 Building $555,100

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

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

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	SOMERVILLE WATER DEPT. (MWRA) serves 81,045 people · EPA ID MA3274000
Water Source	Purchased surface water from MWRA
Last State Inspection	Oct 2025
Lead	4 ppb (2025) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	Lead service line replacement currently in violation since Nov 2019
Monitoring and Reporting	1 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 1,045 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 2,000
Astound Broadband Cable · Fiber in parts of the area	1,500 / 50
Verizon Fixed Wireless	1,000 / 75
Netafy Fixed Wireless	641 / 143
AT&T Fixed Wireless	100 / 20
T-Mobile Fixed Wireless	100 / 20

May also be available: Starry.

Nearby Properties on Stone Ave

Nearby Streets

Search Property Records by Address or Parcel Number

Search by:

By searching, you agree to: Terms • Privacy • Disclosures