
12 Auburn Street Boston — Photo 1 of 36
$2,399,000
12 Auburn Street, Boston, MA 02129
Boston, MA 02129 — Charlestown
Beds
3
Baths
3.5
SqFt
3,360
Style
Single Family
Built
1880
Rich in historic character and offering an impressive approx. 3,360 square feet across four levels, this classic 1880 Charlestown brownstone delivers exceptional scale and versatility. The main and upper levels function as an expansive single-family home, with elegant living and dining rooms, an updated kitchen, soaring ceilings, intricate millwork, hardwood floors, oversized windows and four fireplaces. The expansive primary suite is a standout, complete with custom built ins, a fireplace and spacious en-suite bath with dual vanities, soaking tub and glass-enclosed shower. The top floor also offers the potential to be reconfigured into two bedrooms, adding an additional bedroom to the home. A private deck and patio extend the living space outdoors. Separate from the main residence, the garden level features a one-bedroom apartment with its own private entrance, offering excellent rental income potential or a guest suite. Located near the residence there is a deeded heated garage space available separately for purchase, and there are two additional parking spaces available to rent. Convenient to Main Street and all Charlestown has to offer, with easy access to Downtown Boston, the waterfront and major highways.
Market Value Analysis
* Analysis is based on 24 actively listed and recently sold comparable properties strictly within Boston, MA.
Property Details
Financials
Parking
Interior Specifications
Climate & Utilities
Building & Exterior
Property & Lot
Amenities & Appliances
Oven • Dishwasher • Microwave • Range • Refrigerator • Freezer • Washer • Dryer
Neighborhood
Public Transportation • Shopping • Park • Walk/Jog Trails • Medical Facility • Bike Path
Geography
Property History
$2,399,000
Sep 9, 2026
MLS® 73574730
$2,500
Jul 23, 2025
MLS® 73401425
$2,500
Jul 9, 2025
MLS® 73401425
Population
20,032
U.S. Census Bureau, ACS 2024 5-Year Estimates (B01003)
Median Household Income
$157K
U.S. Census Bureau, ACS 2024 5-Year Estimates (B19013)
Renter-Occupied Homes
49.5%
U.S. Census Bureau, ACS 2024 5-Year Estimates (B25003)
New Construction Permits — Suffolk County
2,527 housing units permitted in the last 12 months (+37% vs the prior 12 months) — 2,269 in 5+ unit buildings
U.S. Census Bureau, Building Permits Survey (through Jun '26)
ADU Potential
Massachusetts allows one accessory dwelling unit by right in single-family zoning districts statewide (M.G.L. c. 40A §3; 760 CMR 71.00, effective Feb 2025). Estimated maximum ADU size for this property: 900 sq ft (the lesser of 900 sq ft or half the 3,360 sq ft principal dwelling). Lot size: 1,946 sq ft.
Based on listing data, which indicates the property type — not the zoning district. Local dimensional, septic (Title 5), and historic-district requirements still apply. Not legal advice — verify with the municipality.
Listing Agent: Tracy Shea
Listing Office: Coldwell Banker Realty - Boston
MLS® Number: 73574730
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