For sale

$999,000

99 Sumner St #312, Boston, MA 02128

2beds

1,085sqft

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Condominium

Built in 2020

-- sqft lot

$961,600 Zestimate^®

$921/sqft

$1,280/mo HOA

What's special

Sun-filled living spacePrivate balconyQuartz countertopsSpacious ensuite bathStainless steel appliancesPrimary suiteCustom cabinetry

Welcome to Unit 312 at The Mark, a 1,085 sqft 2-bed, 2-bath condo offering luxury waterfront living on East Boston's waterfront. The high-end kitchen ft. stainless steel appliances, quartz countertops, and custom cabinetry flows seamlessly into a sun-filled living space w/ southeast-facing exposure. The primary suite includes a huge walk-in closet and spacious ensuite bath. Step onto your private balcony for sweeping views of Boston Harbor, the downtown skyline, and the New Year's Eve fireworks. Includes 1 garage parking spot and a storage unit. The Mark delivers resort-style amenities: 24/7 concierge, fitness center, golf simulator, pet spa, library, clubroom and lounge, and a courtyard w/ grills and firepit, all just minutes from downtown Boston.

53 days

154

8

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Facts & features

Interior

Bedrooms & bathrooms

Bedrooms: 2
Bathrooms: 2
Full bathrooms: 2

Heating

Forced Air

Cooling

Central Air

Appliances

Included: Range, Dishwasher, Disposal, Microwave, Refrigerator, Washer, Dryer

Features

Flooring: Wood
Has basement: No
Has fireplace: No

Interior area

Total structure area: 1,085
Total interior livable area: 1,085 sqft
Finished area above ground: 1,085

Property

Parking

Total spaces: 1
Parking features: Attached, Under
Attached garage spaces: 1

Features

Exterior features: Balcony, City View(s)
Has view: Yes
View description: City, Water
Has water view: Yes
Water view: Water
Waterfront features: Waterfront, Ocean

Details

Parcel number: W:01 P:05403 S:072,5200268
Zoning: 0102

Construction

Type & style

Home type: Condo
Property subtype: Condominium
Attached to another structure: Yes

Materials

Roof: Rubber

Condition

Year built: 2020

Utilities & green energy

Sewer: Public Sewer
Water: Public

Community & HOA

Community

Features: Public Transportation, Park, Walk/Jog Trails, Highway Access, Marina, T-Station, University
Security: Concierge

HOA

Amenities included: Elevator(s), Recreation Facilities, Fitness Center, Clubroom
Services included: Water, Sewer, Insurance, Security, Maintenance Structure, Maintenance Grounds, Snow Removal, Trash, Reserve Funds
HOA fee: $1,280 monthly

Location

Region: Boston

Financial & listing details

Price per square foot: $921/sqft
Tax assessed value: $984,900
Annual tax amount: $7,925
Date on market: 5/7/2026

Estimated market value

$961,600

$914,000 - $1.01M

$4,023/mo

Price history

Date	Event	Price
5/7/2026	Listed for sale	$999,000-9.1%$921/sqft
Source: MLS PIN #73514835 Report a problem
9/25/2025	Listing removed	$1,099,000$1,013/sqft
Source: MLS PIN #73365875 Report a problem
6/3/2025	Price change	$1,099,000-3.4%$1,013/sqft
Source: MLS PIN #73365875 Report a problem
4/29/2025	Listed for sale	$1,138,000-1.7%$1,049/sqft
Source: MLS PIN #73365875 Report a problem
3/31/2025	Listing removed	$1,158,000$1,067/sqft
Source: MLS PIN #73326399 Report a problem
2/19/2025	Price change	$1,158,000-2.5%$1,067/sqft
Source: MLS PIN #73326399 Report a problem
1/15/2025	Listed for sale	$1,188,000+2.6%$1,095/sqft
Source: MLS PIN #73326399 Report a problem
11/1/2024	Listing removed	$1,158,000$1,067/sqft
Source: MLS PIN #73277808 Report a problem
9/20/2024	Price change	$1,158,000-2.5%$1,067/sqft
Source: MLS PIN #73277808 Report a problem
8/14/2024	Listed for sale	$1,188,000+30.6%$1,095/sqft
Source: MLS PIN #73277808 Report a problem
9/28/2021	Sold	$909,887$839/sqft
Source: MLS PIN #72909069 Report a problem

Public tax history

Year	Property taxes	Tax assessment
2025	$11,292 +22.7%	$975,100 +15.5%
2024	$9,205 +3.6%	$844,500 +2.1%
2023	$8,887	$827,500

Find assessor info on the county website

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All calculations are estimates and provided by Zillow, Inc. for informational purposes only. Actual amounts may vary.

HOA fees may include property taxes on listings classified as Co-Ops. Contact the listing agent and/or owner for fee details.

Mortgage interest rates are dependent on a number of factors, including credit score, down payment, and repayment length. Interest rate data provided by Zillow Group Marketplace, Inc. as of 1/1/1970 from various mortgage lenders with which we have lead or other similar arrangements; the Estimated Payment is an average of those rates.

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