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South End, Boston · Condominium Association

Six9one Residences Condominiums

A 40-unit condominium community in South End, Boston.

Median Sale
$625k
Price / Sq Ft
$776
Avg Days on Mkt
83 days
Sold
6
HOA Range
$1159–1159/mo
Total Units
40

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

Homes for Sale in Six9one Residences

Overview

Six9one Residences is a newly constructed 40-unit condominium building in Boston's South End, completed around 2011. The development represents an intentionally modern urban infill designed to complement the neighborhood's historical character while offering contemporary living standards. This professionally managed association maintains monthly HOA fees of approximately $1,159.

Amenities & Features

  • Elevator building with secure intercom and camera system
  • Inviting lobby with warmly designed hallways
  • Building-wide construction to highest standards with contemporary finishes
  • In-unit washer/dryer (select units)
  • Central air conditioning
  • Garage parking available
  • Floor-to-ceiling windows throughout (select units)

Interior Finishes:

  • Bamboo and gradient glass tile flooring
  • Cezor Stone countertops
  • Italian cabinetry
  • Stainless steel Bosch appliances
  • Modern open kitchen/living layouts
  • Floating vanities and tiled showers
  • Hardwood flooring options

Unit Types & Layouts

The building offers a range of configurations to suit different lifestyles. One-bedroom, one-bathroom units provide efficient, modern living spaces with open kitchen concepts. Two-bedroom, two-bathroom units are available in both standard and duplex penthouse formats. Select penthouse residences feature approximately 1,000–1,486 square feet of living space paired with substantial private outdoor space (700–1,000+ sf), accessible from multiple rooms and framed by expansive glass walls.

Several units have been marketed with existing tenant placements, with rental income documented through various lease expiration dates, making them attractive to investor-minded buyers.

Living at Six9one Residences

Six9one Residences sits in the heart of Boston's South End, positioned just blocks away from the Boston Medical Center. This location places residents within walking distance of the neighborhood's eclectic dining, retail, and cultural offerings while maintaining convenient access to major employment centers.

The building's contemporary design aesthetic—characterized by clean lines, neutral color palettes, and abundant natural light—reflects the South End's evolution as a dynamic urban neighborhood. Units oriented to the south and west capture sun-drenched exposures, while upper-level residences command skyline views of the city.

Recent sales data indicates a median price point of $625,000, with units averaging $776 per square foot. The typical holding period on the market runs approximately 83 days, reflecting moderate demand within the South End condo sector.

Recent Sales

Sold Jul 2026691 Massachusetts Avenue
$1.6m
691 Massachusetts Avenue #602
2 bd · 2 ba · 1,486 sqft · 25 days
Sold Jul 2016691 Massachusetts Avenue
$750,000
691 Massachusetts Avenue #301
2 bd · 2 ba · 994 sqft · 29 days
Sold Apr 2016691 Mass Ave
$492,000
691 Mass Ave #202
1 bd · 1 ba · 615 sqft · 27 days
Sold Jun 2015691 Mass Ave
$500,000
691 Mass Ave #503
1 bd · 1 ba · 640 sqft · 114 days
Sold Oct 2013691 Massachusetts Ave
$390,000
691 Massachusetts Ave #302
1 bd · 1 ba · 608 sqft · 17 days
Sold Jun 2013691 Massachusetts
$895,000
691 Massachusetts #602
2 bd · 2 ba · 1,486 sqft · 286 days

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About Your Six9one Residences Expert

JR

Justin Rollo

Six9one Residences 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 Six9one Residences — 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 Six9one Residences →

Frequently Asked Questions

How much are condos at Six9one Residences selling for?

Over recent sales, units at Six9one Residences sold at a median of $625,000, about $776 per square foot.

What are the HOA / condo fees at Six9one Residences?

Monthly condo fees at Six9one Residences currently range from roughly $1159 to $1159, depending on unit size and what the association's master policy covers.

How many units are in Six9one Residences?

Six9one Residences is a 40-unit condominium association in Boston, MA.

How fast do condos sell at Six9one Residences?

Recent sales at Six9one Residences averaged about 83 days on market, with 6 closings in the period.