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South Boston, Boston · Condominium Association

621 East First Street Condominiums

A 29-unit condominium community in South Boston, Boston.

Median Sale
$1.5m
Price / Sq Ft
$797
Avg Days on Mkt
55 days
Sold
3
HOA Range
$569–569/mo
Total Units
29

Market figures reflect closed sales over recent sales. Data sourced from MLS PIN.

Homes for Sale in 621 East First Street

Overview

621 East First Street Condominium is a 29-unit boutique elevator building completed in 2017, located in South Boston's desirable East Side neighborhood. This modern condominium community features single-level floor plans and premium finishes throughout, with recent median sales around $1.54 million. The building represents contemporary urban living with thoughtfully designed residences and shared amenities.

Amenities & Features

  • Elevator access to all units
  • Private roof deck with expansive views
  • Individual private decks on select units
  • Garage parking (2 spaces per unit)
  • Open-concept floor plans with abundant natural light
  • Oversize windows throughout units
  • Chef's kitchens featuring:

- Waterfall granite islands (up to 10 feet)

- Sub Zero and Wolf restaurant-quality appliances

- Wet bar with wine storage

  • Designer bathrooms (2 per unit)
  • Single-level living layouts

Unit Types & Layouts

The condominium offers three-bedroom, two-bathroom residences as the primary floor plan. Units feature approximately 2,100 square feet and are designed as single-level homes—a notable distinction in an elevator-accessible building. This layout appeals to those prioritizing accessibility without sacrificing square footage or luxury finishes.

The kitchen design is a defining feature across units. Each includes high-end appliances and substantial island seating, with the premium kitchens incorporating wet bars and wine storage options. Natural light remains central to the design philosophy, with expansive windows maximizing the open-concept living, dining, and bedroom areas.

Outdoor space varies by unit placement. The building's rooftop deck provides community views, while individual units include private decks—a significant feature for Boston condominium living, where outdoor space commands premium value.

Living at 621 East First Street Condominium

Situated on East First Street in South Boston, this location offers proximity to the neighborhood's restaurants, retail, and waterfront access. The building's 2017 construction means modern mechanical systems and contemporary building infrastructure.

Financial Profile:

Recent market activity shows a median sale price of $1.54 million, with pricing at approximately $797 per square foot. The monthly HOA assessment averages $569, which covers building operations for the 29-unit community. Properties move at a typical 55-day average marketing period, reflecting the competitive pricing and desirable building profile in the South Boston condo market.

Recent Sales

Sold Jun 2025621 E First Street
$1.5m
621 E First Street #B5
3 bd · 2 ba · 1,987 sqft · 79 days
Sold Jan 2022621 E 1st St
$1.5m
621 E 1st St #B5
3 bd · 2 ba · 1,987 sqft · 71 days
Sold Apr 2020621 E First Street
$1.8m
621 E First Street #C1
3 bd · 2 ba · 2,098 sqft · 15 days

Similar Condo Communities Nearby

About Your 621 East First Street Expert

JR

Justin Rollo

621 East First Street Condominium Specialist · Signal Real Estate

Justin Rollo is a Massachusetts real estate expert with over a decade of experience and hundreds of South Shore transactions. He tracks every sale, pending, and price movement inside 621 East First Street — so whether you're buying into the community or thinking about selling, you're working with someone who knows this specific association inside and out.

Ask Justin about 621 East First Street →

Frequently Asked Questions

How much are condos at 621 East First Street Condominium selling for?

Over recent sales, units at 621 East First Street Condominium sold at a median of $1,540,000, about $797 per square foot.

What are the HOA / condo fees at 621 East First Street Condominium?

Monthly condo fees at 621 East First Street Condominium currently range from roughly $569 to $569, depending on unit size and what the association's master policy covers.

How many units are in 621 East First Street Condominium?

621 East First Street Condominium is a 29-unit condominium association in Boston, MA.

How fast do condos sell at 621 East First Street Condominium?

Recent sales at 621 East First Street Condominium averaged about 55 days on market, with 3 closings in the period.