99 Sumner St #321, Boston, MA 02128

$6,000/mo · For rent

This home is in The Mark, a 107-unit condominium building built in 2019.

99 Sumner St #321, Boston

Residence 321 at The Mark, offers sophisticated waterfront living with panoramic harbor and skyline views. This spacious 2 bedroom + den home lives like a three bedroom. The home features oversized windows, a private balcony with stunning sunset views, sleek contemporary design complemented by custom motorized window treatments throughout. The open-concept layout is ideal for modern living and entertaining. Rarely available, the residence also includes TWO garage parking spaces and TWO private storage units. Residents enjoy luxury amenities including 24/7 concierge, fitness center with flex studio, harbor view terrace with grills and fire pits, resident lounge, golf simulator, conference room, and pet spa. Located in East Boston’s vibrant waterfront neighborhood, The Mark is just a 2-minute walk to Maverick Station on the MBTA Blue Line, steps from water taxis and the MBTA Ferry, and minutes from Logan Airport. Enjoy a waterfront lifestyle with refined living, exceptional convenience, and picture-perfect views.

About this address

99 Sumner St #321 is a 3-bedroom, 2-bath rental in Boston, MA 02128 with 1,195 square feet, asking $6,000 a month. It was built in 2021. It has been on our site since October 1, 2026.

The median asking rent among the 612 other 3-bedroom rentals in Boston is $3,400 a month.

At 1,195 square feet, it is smaller than 56% of the 529 other 3-bedroom rentals in Boston with a stated size.

This home is assessed at $1,038,500 for fiscal year 2023. It last sold for $1,390,000 in October 2021.

It scores 100 out of 100 for walkability, from how close everyday places are.

The closest train or subway stop is Maverick (MBTA Blue Line), about 0.1 miles away. The closest bus stop is Maverick (MBTA routes 114, 116, 120), about 0.1 miles away.

The closest public schools by level are Alighieri Dante Montessori School (0.2 miles) and East Boston High School (0.9 miles). The district decides which school serves an address.

Listing information from MLS Property Information Network (MLS PIN), MLS #73567016, deemed reliable but not guaranteed. Prices are compared with other homes listed on this site today. Trains and buses come from the transit agencies’ published schedules and schools from the National Center for Education Statistics. Distances are straight-line. Assessed values and past sales are public records from municipal assessors, published by MassGIS. An assessed value is set for taxation and may differ from market value.

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