421 E. 6th Street, Unit TH1, South BostonBoston, MA 02127Price: $2,995,000

  • Price: $2,995,000
  • Est. Mortgage of $/month
  • 1 Day on Market
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Federal 30-year interest rate: 6.76% last updated on Sep 10, 2026
* All Figures are estimates. Check with your bank or proposed mortgage company for actual interest rates.
This product uses the FRED® API but is not endorsed or certified by the Federal Reserve Bank of St. Louis.
  • $2,995,000List Price
  • 4Bedrooms
  • 5Bathrooms
  • 3,094Square Feet

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Listed by The Boston ONE Team of Serhant
Space. Privacy. Parking. Outdoor living. In South Boston, finding one is expected. Finding all four is exceptional.Introducing Townhouse 1 at 421 East 6th Street-a newly constructed residence delivering the scale and independence of a single-family home with the sophistication of city living.Spanning just under 3,100 living square feet, the home features four en-suite bedrooms, four-and-a-half bathrooms, a dedicated office, multiple private outdoor spaces, and a direct-access car garage.Oversized black-framed windows fill the main living level with natural light, while wide-plank floors and clean architectural lines create a refined, contemporary atmosphere. The open kitchen, dining, and living areas flow effortlessly together, anchored by a sleek linear fireplace and custom millwork.At the center of the home, a dramatic waterfall island with seating for five sets the stage for everyday living and entertaining. The chef's kitchen pairs two-tone cabinetry and polished-nickel fixtures with a professional Thermador appliance suite, including a 48-inch six-burner gas range with griddle, panel-ready French-door refrigerator, drawer microwave, and dishwasher. A separate wet bar with a beverage center and second dishwasher makes hosting seamless.Across two private levels, four generously proportioned bedrooms each feature an en-suite bathroom, providing exceptional comfort for family and guests. The primary suite measures approximately 16 feet 6 inches by 20 feet and offers oversized windows, custom wall detailing, a walk-in closet, and a private balcony.Its spa-inspired bathroom is appointed with a double vanity, polished-nickel fixtures, and an oversized glass-enclosed shower with rainfall and handheld showerheads. Curated tile, custom vanities, and sophisticated finishes distinguish the additional en-suite baths.Outdoor living unfolds across two private balconies and an exclusive roof deck-ideal for summer/fall dinners, sunset cocktails, or a quiet escape above the neighborhood. Below, the two tandeem car garage provides a level of convenience seldom available in South Boston.Moments from East Broadway, the waterfront, Seaport, and Downtown Boston, Townhouse 1 offers the freedom to have everything you want from the city-without compromise.

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