41 Mason St, Somerville, MA 02144 Property Records

Middlesex County and Somerville City property record for 41 Mason St, Somerville, MA 02144

Property Summary

Property Type	Duplex
Details	7 bd · 2 ba · 3,361 sqft · built 1920
Lot Size	0.101 acres (4,412 sqft)
Owner	2 Individual Names on File
Last Sale	$1,275,000 (Oct 2018)
Tax Bill	$16,089 (2026)
Deeds & Mortgages	Jan 2021 Refinance Sep 2020 Refinance + 2 more
Flood Zone	Zone X (minimal risk)
APN	`15-A-28`

Property Details

APN / Parcel Number

Primary APN	`15-A-28`
Alternative APNs	`SOME M:15 B:A L:28` `4216012`

Interior

Bedrooms	7 Beds
Full Baths	2 Baths
Total Rooms	13 Rooms
Units	2 Units
Stories	3 Stories
Building Area	3,361 sqft Living Area
Gross Area	5,255 sqft
Basement Area	1,167 sqft
Unfinished Basement	1,167 sqft

Exterior

Year Built	Built 1920
Effective Year Built	Effective 1920
Architectural Style	Duplex Single
Exterior Material	Wood Siding
Construction Type	Frame
Roof Type	Gambrel
Roof Material	Slate
Lot Area	4,412 sqft (0.101 acres)

Utilities, Heating & Cooling

Heating System	Hot Water
Heating Fuel	Gas

Location & Zoning

Account Number	4216012
Street Address	41 MASON ST
City	SOMERVILLE
State	MA
Zip	02144-1607
Property Category	Residential
Property Type	Residential > Multi-Unit > Duplex
Local Zoning Code	RA
Legal Block	A
Legal Lot Number	28
Jurisdiction	SOMERVILLE MA
Township / Civil Division	SOMERVILLE
Census Block Group	4
Census Block	4004
Census Tract	350600

Owner

41 Mason St, a duplex, is owned by two individuals who bought it in October 2018.

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

Owner of Record	2 Individual Names on File
Mailing Address	26 POWDER HOUSE BLVD, 2, SOMERVILLE, MA 02144-1306
Owner Type	Individual

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
Jan 29, 2021	Deed of Trust, Mortgage · Stand-Alone Refinance UNITED NATIONS FCU
Sep 28, 2020	Deed of Trust, Mortgage · Stand-Alone Refinance UNITED NATIONS FCU
Sep 3, 2019	Deed of Trust, Mortgage · Stand-Alone Refinance FALL RIVER FIVE CENTS SAVINGS BANK
Oct 31, 2018	Quit Claim Deed, Transfer FIRST CHOICE LN SVCS

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Oct 31, 2018 · Amount on File
Deed Sale	Oct 31, 2018 · Amount on File
Prior Sale	Jan 11, 1983 · Amount on File
Deed Book / Page	71822 / 421
Transfer Doc	071822-421
Record Updated	Oct 29, 2026

January 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SOMERVILLE MA
Property Address	41 MASON ST, SOMERVILLE, MA 02144-1607
Transaction Type	Mortgage
Record Updated	Apr 2, 2026

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	076838-497
Date	Jan 29, 2021
Book Page	76838/497
Instrument	22121

Lender

Name	UNITED NATIONS FCU
Type	Credit Union

Agreement

Type	Stand-Alone Refinance
Amount	Amount on Record
Term	361 Months
Due	Feb 1, 2051

September 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SOMERVILLE MA
Property Address	41 MASON ST, SOMERVILLE, MA 02144-1607
Transaction Type	Mortgage
Record Updated	Feb 5, 2021

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	75738-542
Date	Sep 28, 2020
Book Page	75738/542
Instrument	172881

Lender

Name	UNITED NATIONS FCU
Type	Credit Union

Agreement

Type	Stand-Alone Refinance
Amount	Amount on Record
Term	361 Months
Due	Oct 1, 2050

September 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SOMERVILLE MA
Property Address	41 MASON ST, SOMERVILLE, MA 02144-1607
Transaction Type	Mortgage
Record Updated	Feb 5, 2021

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	73214-334
Date	Sep 3, 2019
Book Page	73214/334
Instrument	132012

Lender

Name	FALL RIVER FIVE CENTS SAVINGS BANK
Type	Bank

Agreement

Type	Stand-Alone Refinance
Amount	Amount on Record
Term	361 Months
Due	Oct 1, 2049

October 2018: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	SOMERVILLE MA
Recording Date	Oct 31, 2018
Property Address	41 MASON ST, SOMERVILLE, MA 02144-1607
Document Number	71822-421
Book / Page	071822 / 000421
Instrument Date	Oct 25, 2018
Instrument	167662
Transaction Type	Transfer
Record Updated	Nov 22, 2018

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$5,814.00
Amount Accuracy	Confirmed
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Husband and Wife
Address	41 MASON ST SOMERVILLE MA 021441607, SOMERVILLE, MA 02144-1607

Mortgage

Document Number	71822-430
Date	Oct 31, 2018
Book Page	071822/000430
Instrument	167665

Lender

Name	FIRST CHOICE LN SVCS
Type	Funding / Finance Company

Agreement

Amount	Amount on Record
Term	360 Months
Due	Oct 30, 2048

Tax Assessment & Valuation

The 2026 property tax bill for 41 Mason St was $16,089, up 5.4% from the year before.

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	$16,089.00 (+5.43%)	$1,465,300 (+4.75%) Land $784,900 Building $680,400	$1,393,957
2025	$15,261.00 (+4.58%)	$1,398,800 (+0.84%) Land $747,500 Building $651,300
2024	$14,593.00 (+5.05%)	$1,387,200 (+3.26%) Land $747,500 Building $639,700
2023	$13,891.00	$1,343,400 Land $747,500 Building $595,900

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

Flood

FEMA maps place 41 Mason St in Zone X, an area of minimal flood risk, though there have been 2 flood claims nearby since 1978.

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
Nearby Flood Policies	2 units insured incl. 2 condo units
Nearby Flood Claims	2 (1978)
Most Recent Claim	Feb 1978 · tidal / storm surge

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

The area around 41 Mason 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	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 1,241 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
Netafy Fixed Wireless	564 / 125
T-Mobile Fixed Wireless	100 / 20
AT&T Fixed Wireless	100 / 20

May also be available: Starry, Verizon.

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