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421 E. 6th St #TH1 Boston — Photo 1 of 42

421 E. 6th St #TH1 Boston — Photo 1 of 42

$2,995,000

Investment Analysis — 421 E. 6th St #TH1

Boston, MA 02127 — South Boston

Based on HUD Small Area Fair Market Rent for Boston-Cambridge-Quincy, MA-NH HUD Metro FMR Area, a 4-bedroom in 02127 carries an estimated $5,020/mo in gross rent — about a 0.10% cap rate and $3,086/yr in estimated NOI at the $2,995,000 list price. Adjust every assumption in the calculator below.

View Standard Listing

Beds

4

Baths

4.5

SqFt

3,094

Style

Condominium

Built

2026

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.

Estimates — not financial advice

These figures are illustrative estimates for informational purposes only — not an appraisal, valuation, or guarantee of rent, income, or returns, and not financial, tax, or investment advice. Rent is either the figure reported on the MLS listing — in-place rent that may differ from market and is not verified against the actual leases — or, where the listing reports none, an estimate from HUD Small Area Fair Market Rents, a government benchmark that may differ from actual market rent. Each figure is labelled with its source. Cap rate, NOI, and returns depend on the assumptions shown, which you can change. MLS and other third-party data may be inaccurate or out of date. Verify all figures independently and consult your own financial, tax, and legal advisors before making any investment decision.

Property Details

Financials

Original Price$2,995,000
Annual Taxes--
HOA Fee$563

Parking

Garage2
Off-Street2

Interior Specifications

Total Rooms8
Fireplaces1
FlooringTile, Hardwood
BasementN

Climate & Utilities

HeatingForced Air, Natural Gas
CoolingCentral Air
WaterPublic
SewerPublic Sewer

Building & Exterior

ConstructionFrame
RoofRubber
Foundation--
ZoningRES

Property & Lot

Acres--
SqFt Lot--
Lot Features--

Amenities & Appliances

Microwave • ENERGY STAR Qualified Refrigerator • ENERGY STAR Qualified Dishwasher • Range Hood • Range

Neighborhood

Public Transportation • Shopping • Pool • Park • Walk/Jog Trails • Medical Facility

Geography

Floorplan Breakdown

Structural Layout

Third
Master BedroomBedroom 2
Second
Living RoomDining RoomKitchen
Fourth Floor
Bedroom 3Bedroom 4
Living Room
Lvl Second
Dining Room
Lvl Second
Kitchen
Lvl Second
Master Bedroom
Lvl Third
Bedroom 2
Lvl Third
Bedroom 3
Lvl Fourth Floor
Bedroom 4
Lvl Fourth Floor
Listing Provided By

Listing Agent: The Boston One Team

Listing Office: Serhant

MLS® Number: 73575859