Condominium at 380 Harrison Ave # 12J, Boston MA 02118
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$7,395,000

380 Harrison Ave # 12J, Boston MA 02118
Boston, MA 02118
Listed by The Boston ONE Team
Bedrooms
4
Bathrooms
4.5
Living area
2,704 sqft
Year built
2022

About this home

There are homes that define luxury, and then there are homes that redefine an entire market. Residence 12J at The Quinn is among Boston's most extraordinary offerings-an architectural statement where iconic design, exceptional scale, and one of the city's most coveted private outdoor sanctuaries converge to create a lifestyle rarely found and virtually impossible to replicate. Designed by internationally acclaimed Robert A.M. Stern Architects (RAMSA) with interiors by Hark+Osborne Interior Design, this remarkable corner residence encompasses 4,240 total square feet of refined indoor and outdoor living. Floor-to-ceiling walls of glass frame sweeping views of the South End, Back Bay skyline, and downtown Boston while filling every room with natural light. The defining feature is an extraordinary 1,536-square-foot private terrace that rivals the outdoor living experience of the world's finest penthouses. Multiple lounge and dining areas, a Wolf outdoor kitchen with grill, marble fireplace, and dedicated wellness space create a private retreat equally suited for intimate mornings, elegant entertaining, and unforgettable evenings beneath the city skyline. nside, the great room flows effortlessly into a chef's kitchen centered around a striking Calacatta marble island, custom cabinetry, dual Wolf ovens, Sub-Zero refrigeration, wine storage, and premium integrated appliances. Every space has been curated to balance timeless elegance with effortless functionality. The primary suite is a private sanctuary featuring serene skyline views, Poliform wardrobes enhanced by California Closets, radiant heated marble floors, and a spa-inspired bath. Three additional en-suite bedrooms provide exceptional accommodations, while a bespoke den with custom oak built-ins and dedicated climate control serves as an executive office, library, or media retreat. Designer wall coverings, Lutron shading, Bang & Olufsen technology, custom built-ins, and carefully selected finishes reflect an uncompromising commitment to craftsmanship. Residents enjoy 24-hour concierge, an indoor pool, state-of-the-art fitness center, private library, sports lounge, children's playroom, pet spa, bicycle storage, and Kaia by James Beard Award-winning Chef Michael Schlow. Perfectly positioned in the South End, moments from acclaimed restaurants, boutique shopping, galleries, Back Bay, and Boston's cultural landmarks, Residence 12J is more than an exceptional home—it is a legacy residence.

Highlights

ViewFireplace

Property details

MLS
MLS Property Information Network
MLS #
73527349
Property type
Condominium
Subdivision
N/A
Status
Active
Days on market
146
On market date
June 1, 2026
Stories
1
Total bathrooms
4.5
Garage spaces
3
Parking spaces
3
Lot size
N/A
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Nearby schools

Within 10 miles. School directory data from the National Center for Education Statistics (NCES), accessed via the Urban Institute Education Data API. Local Score is calculated by INNOVATE Real Estate; where a state rating is shown, it comes from that state's own official school report card.

Elementary
Josiah Quincy
0.3 mi away · Grades -1-5
Nearest school -- attendance-zone data not available here
5.0
Local Score (student-teacher ratio only (preliminary -- will incorporate state test-score data once available)) -- not an official state rating
Enrollment
711
Student:teacher ratio
10.9:1
District
Boston
MiddleCharter
UP Academy Charter School of Boston
0.95 mi away · Grades 6-8
Nearest school -- attendance-zone data not available here
5.0
Local Score (student-teacher ratio only (preliminary -- will incorporate state test-score data once available)) -- not an official state rating
Enrollment
317
Student:teacher ratio
10.2:1
District
UP Academy Charter School of Boston (District)
High
Boston Adult Academy
0.42 mi away · Grades 11-12
Nearest school -- attendance-zone data not available here
5.0
Local Score (student-teacher ratio only (preliminary -- will incorporate state test-score data once available)) -- not an official state rating
Enrollment
120
Student:teacher ratio
6.7:1
District
Boston

Walkability

Blended score for Boston's center, calculated by INNOVATE Real Estate from two sources: the EPA's National Walkability Index (street network, transit, land-use mix) and Google Places amenity data (what's actually reachable on foot from this point). 60% EPA National Walkability Index + 40% nearby-amenity density (Google Places).

93
Highly walkable
out of 100
EPA National Walkability Index
17.7 / 20 -- Most walkable
Google Places amenity density
100 / 100
Restaurants & cafes20
Grocery stores20
Parks20
Schools20
Transit stops20
Pharmacies20

Market position

How this listing compares to current activity in Boston, from live MLS data.

On the market 146 days -- 21 more days than Boston's current average of 125 days.
For reference, the median list price across 8,979 active listings in Boston right now is $80,000.

Mortgage calculator

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Est. monthly payment
$44,684/mo
$1,479,000 down
$5,916,000 loan
Principal & interest$38,371
Property tax (est.)$6,163
Home insurance (est.)$150

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Data source: Listing information provided by MLS Property Information Network via Trestle/CoreLogic. Last updated August 7, 2026.

Information herein deemed reliable but not guaranteed; all measurements, school assignments, HOA fees, taxes, and feature lists are approximate and should be independently verified. Equal Housing Opportunity.