99 Sumner St #PH621 · Boston

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For sale

FOR SALE · MLS #73493860

$1,499,000

beds: 2
baths: 2
sqft: 1,197

99 Sumner St #PH621

Boston, MA 02128

LOCATION

Property location

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99 Sumner St #PH621, Boston, MA 02128Open Street View

GPS

Home type: Condominium
Interior living area: 1,197 sqft
Year built: 2021
Parking spaces: 2
Price per sqft: $1,252/sqft
HOA fee: $1,565 · Monthly

About this home

Residence 621 at The Mark offers 2 bedrooms, a den, 2 baths, and 1,197 square feet of beautifully designed waterfront living, with two garage parking spaces and two storage units included. The open-concept layout features a chef's kitchen with Bosch appliances, quartz countertops, and upgraded cabinetry, all flowing across hardwood floors to a living space built for both everyday ease and effortless entertaining. The Mark is a full-service luxury building: 24-hour concierge, private terrace, fireplace lounge, billiards room, library, fitness center, conference room, and pet spa. Everything you need, without ever leaving the building. Downtown Boston is minutes away by ferry, Blue Line, or a quick drive. Logan Airport is moments from your door, making this a rare city residence that truly serves those with a dynamic lifestyle. Tallship, waterfront dining, and green space are all moments away. This is Boston waterfront living at its finest.

Listed by The Boston ONE Team · Serhant
MLS PIN #73493860 · Updated 9/19/2026, 3:05:00 AM ET

Building & association

Total units: 107
Building stories: 1
Entry level: 6
HOA fee includes: Heat · Water · Sewer · Insurance · Security · Maintenance Structure · Maintenance Grounds · Snow Removal · Reserve Funds
Association amenities: Hot Water · Fitness Center
Pets allowed: Yes

From MLS fields in this listing. Confirm association rules and fees with the association documents.

Facts & features

Home overview

Property subtype: Condominium
Property category: Residential
MLS status: Active
Bedrooms: 2
Full bathrooms: 2
Half bathrooms: 0
Total bathrooms: 2
Total rooms: 6
Living area: 1,197 sqft
Living area source: Unit Floor Plan
Above grade finished area: 1,197 sqft
Building area: 1,197
Building area units: Square Feet
Building area source: Plans
Area includes basement: No
Stories: 1
Building stories: 1
Entry level: 6
Unit building: PH621

Interior & systems

Heating: Forced Air
Heating available: Yes
Cooling: Central Air
Cooling available: Yes
Flooring: Wood
Laundry: In Unit
Basement: N
Fireplace: No
Fireplaces: 0
Security features: Intercom · TV Monitor · Doorman · Concierge

Price & tax details

Current asking price$1,499,000

Original asking price$1,625,000

Listed on2026-03-31

Days on market172

Tax record supplied by MLS
Year	Property tax	Assessed value
2025	$13,528	$1,168,200

These records are supplied by the current listing. Assessed value is not market value; confirm taxes with the local assessor.

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Results include principal and interest, plus property tax and HOA when MLS lists them; home and mortgage insurance and utilities are excluded. Tax uses the amount in this listing; a buyer’s actual tax may differ with reassessment or residential exemptions. The rate is your assumption, not a current market quote or loan offer.

SCHOOLS & EDUCATION

Schools & performance

2026 MA DESE

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78DESE percentile