311 Main St, Charlestown, MA 02129 Property Records

Suffolk County and Boston City property record for 311 Main St, Charlestown, MA 02129

Property Summary

Property Type	Single Family Home
Details	2 bd · 1.5 ba · 1,246 sqft · built 1855
Lot Size	0.02 acres (883 sqft)
Owner	Individual Name on File
Last Sale	$428,000 (Jul 2011)
Tax Bill	$12,247 (2025)
Deeds & Mortgages	Nov 2017 Mortgage Jun 2020 Line of Credit
Flood Zone	Zone X (minimal risk)
APN	`CHAR W:02 P:00580 S:000`

Property Details

APN / Parcel Number

Primary APN	`CHAR W:02 P:00580 S:000`

Interior

Bedrooms	2 Beds
Full Baths	1.5 Baths
Half Baths	1 Half Bath
Total Rooms	5 Rooms
Stories	2 Stories
Building Area	1,246 sqft Living Area
Gross Area	1,920 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1855
Effective Year Built	Effective 2015
Architectural Style	Other
Exterior Material	Concrete Block
Roof Type	Flat
Roof Material	Other
Lot Area	883 sqft (0.02 acres)

Utilities, Heating & Cooling

Cooling System	HVAC
Heating System	Hot Water

Location & Zoning

Street Address	311 MAIN ST
City	CHARLESTOWN
State	MA
Zip	02129-2920
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R1
Jurisdiction	BOSTON MA
Township / Civil Division	BOSTON
Census Block Group	1
Census Block	1005
Census Tract	40401

Owner

311 Main St is owned and occupied by an individual who bought it in July 2011.

Source: Suffolk County and Boston City records, as of July 20, 2026

Owner of Record	Individual Name on File
Mailing Address	311 MAIN ST, CHARLESTOWN, MA 02129-2920
Occupancy	Owner Occupied
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
Nov 3, 2017	Deed of Trust, Mortgage HANSCOM FCU
Jun 23, 2020	Deed of Trust, Mortgage · Line of Credit WEBSTER BANK

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Jul 26, 2011 · Amount on File
Deed Sale	Jul 26, 2011 · Amount on File
Prior Sale	Sep 21, 1994 · Amount on File
Deed Document Number	20116
Deed Book / Page	48185 / 294
Transfer Doc	36535-2
Record Updated	Sep 20, 2026

November 2017: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOSTON MA
Property Address	311 MAIN ST, CHARLESTOWN, MA 02129-2920
Transaction Type	Mortgage
Record Updated	Feb 5, 2021

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	58756-3
Date	Nov 3, 2017
Book Page	58756/3
Instrument	98371

Lender

Name	HANSCOM FCU
Type	Credit Union

Agreement

Amount	Amount on Record
Term	360 Months
Due	Nov 1, 2047

June 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOSTON MA
Property Address	311 MAIN ST, CHARLESTOWN, MA 02129-2920
Transaction Type	Mortgage
Record Updated	Feb 5, 2021

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	63224-208
Date	Jun 23, 2020
Book Page	63224/208
Instrument	49427

Lender

Name	WEBSTER BANK
Type	Bank

Agreement

Type	Line of Credit
Amount	Amount on Record
Term	361 Months
Due	Jul 1, 2050

Interest

Rate Type	Adjustable Rate

Tax Assessment & Valuation

The 2025 property tax bill for 311 Main St was $12,247, up 16.7% from the year before.

Source: Suffolk County and Boston City assessment roll, as of April 14, 2026

Property Jurisdictions

Type	Name
State	Massachusetts
County	Suffolk County
Municipality	Boston City
Unified School District	Boston School District (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2025	$12,247.00 (+16.73%)	$1,057,600 (+9.87%) Land $318,400 Building $739,200	$972,325 (+0.26%)
2024	$10,492.00 (+6.56%)	$962,600 (+5%) Land $247,900 Building $714,700	$969,760
2023	$9,846.00	$916,800 Land $236,100 Building $680,700

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

Flood

FEMA maps place 311 Main St in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 2023.

Source: FEMA National Flood Hazard Layer, effective January 21, 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
Flood Insurance Cost	Premium on File median of 11 individual policies
Community Rating System	Class 10 (0% premium discount)
Nearby Flood Policies	13 units insured incl. 2 condo units
Nearby Flood Claims	1 (2023)
Most Recent Claim	Jul 2023 · rainfall accumulation

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 311 Main 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	BOSTON WATER AND SEWER COMMISSION (MWRA) serves 675,647 people · EPA ID MA3035000
Water Source	Purchased surface water from MWRA
Last State Inspection	Mar 2026
Lead	6 ppb (2026) 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 2020
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 1,310 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable · Fiber in parts of the area	2,000 / 2,000
Verizon Fiber · Fixed Wireless in parts of the area	980 / 880
Netafy Fixed Wireless	641 / 143
T-Mobile Fixed Wireless	100 / 20
AT&T Fixed Wireless	100 / 20

May also be available: Starry.

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