For sale

Price cut: $99K (6/6)

$1,200,000

99 Sumner Penthouse 612, Boston, MA 02128

2beds

1,206sqft

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Condominium

Built in 2021

-- sqft lot

$-- Zestimate^®

$995/sqft

$1,304/mo HOA

What's special

Flex spaceAdditional bedroomLarge islandTwo custom closets

Welcome to Penthouse Unit 612—where waterfront living meets comfort and convenience. Just minutes from Logan Airport and downtown Boston, The Mark provides 24/7 concierge service, deeded garage parking, extra storage, and thoughtfully designed spaces that elevate daily living—from the club room and golf simulator to the pet-washing station, yoga/fitness studio, and the inviting garden terrace with lounge.This 2 bed PLUS/2 bath penthouse features a sleek open kitchen with high-end appliances and a large island. The primary suite fits a king bed, includes two custom closets, and offers a spa-like ensuite with a glass shower. The additional bedroom and flex space provide excellent work-from-home potential.Enjoy harbor and Boston skyline views, plus easy access to Maverick T Station, Tall Ship, and ferries to the Seaport and Long Wharf—an ideal blend of serenity, views, and city living. Seller is motivated! Book an appointment for a private showing.

112 days

262

7

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Facts & features

Interior

Bedrooms & bathrooms

Bedrooms: 2
Bathrooms: 2
Full bathrooms: 2

Primary bedroom

Level: First

Bedroom 2

Level: First

Dining room

Level: First

Kitchen

Level: First

Living room

Level: First

Heating

Central, Forced Air, Natural Gas

Cooling

Central Air

Appliances

Included: Range, Dishwasher, Disposal, Microwave, Refrigerator, Washer, Dryer
Laundry: First Floor, In Unit

Features

Flooring: Wood
Windows: Insulated Windows
Has basement: No
Has fireplace: No
Common walls with other units/homes: No One Above

Interior area

Total structure area: 1,206
Total interior livable area: 1,206 sqft
Finished area above ground: 1,206

Property

Parking

Total spaces: 1
Parking features: Attached, Garage Door Opener
Attached garage spaces: 1

Features

Has view: Yes
View description: Water
Has water view: Yes
Water view: Water
Waterfront features: Waterfront, Harbor

Details

Parcel number: 5200309
Zoning: RES

Construction

Type & style

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

Condition

Year built: 2021

Utilities & green energy

Electric: 110 Volts
Sewer: Public Sewer
Water: Public
Utilities for property: for Gas Range

Community & HOA

Community

Features: Public Transportation, Shopping, Tennis Court(s), Park, Walk/Jog Trails, T-Station
Security: Intercom, Doorman

HOA

Amenities included: Elevator(s), Recreation Facilities, Fitness Center, Clubroom, Storage
Services included: Water, Sewer, Insurance, Security, Maintenance Structure, Snow Removal, Trash, Reserve Funds
HOA fee: $1,304 monthly

Location

Region: Boston

Financial & listing details

Price per square foot: $995/sqft
Tax assessed value: $1,062,600
Annual tax amount: $12,305
Date on market: 3/15/2026
Listing terms: Seller W/Participate

Estimated market value

Not available

Estimated sales range

Not available

Price history

Date	Event	Price
6/6/2026	Price change	$1,200,000-7.6%$995/sqft
Source: MLS PIN #73478804 Report a problem
4/2/2026	Price change	$1,299,000-3.8%$1,077/sqft
Source: MLS PIN #73478804 Report a problem
3/16/2026	Listed for sale	$1,350,000$1,119/sqft
Source: MLS PIN #73478804 Report a problem
12/21/2025	Listing removed	$1,350,000$1,119/sqft
Source: MLS PIN #73455485 Report a problem
11/17/2025	Listed for sale	$1,350,000+14.4%$1,119/sqft
Source: MLS PIN #73455485 Report a problem
7/25/2022	Sold	$1,179,900$978/sqft
Source: MLS PIN #72987790 Report a problem
6/8/2022	Contingent	$1,179,900$978/sqft
Source: MLS PIN #72987790 Report a problem
6/6/2022	Price change	$1,179,900-5.5%$978/sqft
Source: MLS PIN #72987790 Report a problem
5/30/2022	Listed for sale	$1,248,000$1,035/sqft
Source: MLS PIN #72987790 Report a problem

Public tax history

Tax history is unavailable.

Monthly payment

Est. payment

Payment breakdown

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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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