16R Union St, Charlestown, MA 02129 Property Records

Suffolk County and Boston City property record for 16R Union St, Charlestown, MA 02129

Property Summary

Property Type	Triplex
Details	6 bd · 3 ba · 2,812 sqft · built 1870
Lot Size	0.033 acres (1,440 sqft)
Owner	Trust Name on File
Tax Bill	$16,319 (2025)
Deeds & Mortgages	Aug 2023 Transfer
Flood Zone	Zone X (minimal risk)
APN	`CHAR W:02 P:03819 S:000`

Property Details

APN / Parcel Number

Primary APN	`CHAR W:02 P:03819 S:000`

Interior

Bedrooms	6 Beds
Full Baths	3 Baths
Total Rooms	12 Rooms
Units	3 Units
Stories	4 Stories
Building Area	2,812 sqft Living Area
Gross Area	4,287 sqft

Exterior

Year Built	Built 1870
Effective Year Built	Effective 1870
Architectural Style	Other
Exterior Material	Other
Roof Type	Gable
Roof Material	Asphalt
Lot Area	1,440 sqft (0.033 acres)

Utilities, Heating & Cooling

Heating System	Hot Water

Location & Zoning

Street Address	16R UNION ST
City	CHARLESTOWN
State	MA
Zip	02129-3539
Property Category	Residential
Property Type	Residential > Multi-Unit > Triplex
Local Zoning Code	R3
Jurisdiction	BOSTON MA
Township / Civil Division	BOSTON
Census Block Group	2
Census Block	2004
Census Tract	40401

Owner

16R Union St, a triplex, is held in a trust since August 2023.

Source: Suffolk County and Boston City records, as of October 9, 2026

Owner of Record	Trust Name on File
Mailing Address	20 BEACH AVE, SWAMPSCOTT, MA 01907-1702
Owner Type	Individual
Vesting	Trust

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

Assessor's Deed Record

Deed Names	Name on Deed
Last Transfer Date	Aug 7, 2023
Transfer Doc	069307-165
Record Updated	Oct 29, 2026

August 2023: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	BOSTON MA
Recording Date	Aug 8, 2023
Property Address	16R UNION ST, CHARLESTOWN, MA 02129-3539
Document Number	069307-165
Book / Page	69307 / 165
Instrument Date	Aug 7, 2023
Instrument	49985
Transaction Type	Transfer
Record Updated	Aug 25, 2023

Transaction

Tax	$0.00
Amount Accuracy	No Consideration Stated
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	20 BEACH AVE, SWAMPSCOTT, MA 01907-1702

Tax Assessment & Valuation

The 2025 property tax bill for 16R Union St was $16,319, up 17% 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
2025	$16,319.00 (+17.02%)	$1,409,200 (+10.15%) Land $471,300 Building $937,900
2024	$13,945.00 (+6.55%)	$1,279,400 (+4.99%) Land $400,300 Building $879,100
2023	$13,088.00	$1,218,600 Land $381,300 Building $837,300

Assessed value is set for property tax purposes and is not a market price estimate.

Flood

FEMA maps place 16R Union St in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 2018.

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
Nearby Flood Claims	1 (2018)
Claims Outside the SFHA	1 of 1
Most Recent Claim	Jan 2018 · 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 16R Union 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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