The Mark

99 Sumner St, Boston, MA 02128

The Mark is a 6-story condominium building at 99 Sumner St in East Boston, Boston, MA 02128, with 107 condos, built in 2019.

At a glance

• 107 condos (the City of Boston assessor)
• Built in 2019
• 6 floors
• Units from 431 to 1,572 sq ft (median 740)
• Bedrooms: 25 studio, 42 1-bedroom, 35 2-bedroom, 5 3-bedroom
• Units assessed $164,700–$1,740,700, median $722,500 (FY2026)

Homes for sale in The Mark

• 99 Sumner #408 — $459,000 · 1 bd, 1 ba, 455 sq ft
• 99 sumner st #305 — $575,000 · 1 bd, 1 ba, 722 sq ft
• 99 Sumner Street #206 — $725,000 · 1 bd, 1 ba, 809 sq ft
• 99 Sumner St #506 — $850,000 · 1 bd, 1 ba, 783 sq ft
• 99 Sumner St #312 — $959,000 · 2 bd, 2 ba, 1,085 sq ft
• 99 Sumner St #321 — $1,350,000 · 2 bd, 2 ba, 1,195 sq ft
• 99 Sumner St #PH621 — $1,499,000 · 2 bd, 2 ba, 1,197 sq ft

Homes for rent in The Mark

• 99 Sumner St #321 — $6,000/mo · 3 bd, 2 ba, 1,195 sq ft

Getting around

Walkability: 100 out of 100, from how close everyday places are.

Closest train and subway stops:

• Maverick (MBTA Blue Line), 0.2 mi

Closest bus stops:

• Maverick (MBTA 114 116 120), 0.2 mi
• Commercial St @ Battery St (MBTA 4), 0.5 mi
• Blue Line - MBTA (Logan Express 22 33 41), 0.7 mi

Public schools nearby

• Alighieri Dante Montessori School (elementary, grades PK–6), 0.3 mi
• East Boston High School (high, grades 7–12), 1.0 mi

The district decides which school serves an address. Distances are straight-line.

Questions about The Mark

How many units are in The Mark?

The Mark has 107 condos, according to the City of Boston assessor.

When was The Mark built?

The Mark was built in 2019 and has 6 floors.

Are there homes for sale or rent in The Mark right now?

Yes: 7 for sale from $459,000 and 1 for rent from $6,000 a month, listed on this page. Benjamin Realty can show any of them.

What are condos in The Mark worth?

Units are assessed from $164,700 to $1,740,700 (median $722,500) for fiscal year 2026. Assessed values are set for taxes and can differ from market value.

How big are the units in The Mark?

Units run from 431 to 1,572 square feet, with a median of 740.

What is the closest T or train station to The Mark?

Maverick (MBTA Blue Line) is 0.2 miles away, in a straight line.

Buildings near The Mark

• Maverick Landing — 119 Sumner St, 80 apartments, 0.1 mi
• Slip45 — 45 Lewis St, 114 condos · built 2020 · 2 listed now, 0.1 mi
• Slip65 — 65 Lewis St, 80 condos · built 2017 · 6 floors · 2 listed now, 0.1 mi
• Heritage — 209 Sumner St, 276 apartments, 0.2 mi
• Maverick Landing — 1 Maverick St, 150 apartments, 0.2 mi
• Coppersmith Village — 87 Grady Ct, 74 apartments, 0.2 mi
• Victory Gardens — 54 Orleans St, 87 apartments, 0.3 mi
• Landfall — 72 Marginal St, 111 apartments, 0.3 mi

More: all 300 large buildings in Boston · Boston homes for sale and rent

Sources

• MassGIS Standardized Assessors’ Parcels (municipal assessors)
• City of Boston FY2026 Property Assessment
• OpenStreetMap contributors (ODbL)

Assessed values and sales are public records from municipal assessors. An assessed value is set for taxation and may differ from market value. Listing information from MLS Property Information Network (MLS PIN), deemed reliable but not guaranteed. Data checked 2026-11-02.

To ask about homes in The Mark or book a showing, call Benjamin Realty at (617) 734-5050 or email [email protected].