Condominium at 77 Old Harbor St # 3, Boston MA 02127, Boston
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$679,900

77 Old Harbor St # 3, Boston MA 02127
Boston, MA 02127
Listed by Ryan Shea
Bedrooms
2
Bathrooms
1
Living area
650 sqft
Year built
1905

About this home

Enjoy some of South Boston's best views from your own expansive private roof deck, with the ocean beyond M Street Beach on one side and the Boston skyline and Prudential Center on the other. Exclusively for this unit and accessed directly from inside the home by a private staircase, this incredible rooftop retreat with electricity offers an exceptional extension of the living space—perfect for entertaining friends, outdoor dining, morning coffee, or unwinding as the sun sets over the city. Inside, this turnkey, top-floor 2-bedroom, 1-bath residence combines comfort and character with hardwood floors throughout, central A/C, in-unit laundry, and a gas fireplace in the living room. The kitchen features stone countertops, stainless steel appliances, a gas range, and peninsula seating, while the bathroom is finished with a marble vanity. Dedicated basement storage provides additional space for bikes, beach gear, and everyday essentials.The location puts the best of South Boston right outside your door. Thomas Park is just a minute away, with M Street Beach, the neighborhood dog park, athletic fields, and Broadway's restaurants, shops, and neighborhood favorites all within an easy five-minute walk. Set atop an intimate three-unit building, this is a rare opportunity to pair a turnkey South Boston home with truly exceptional private outdoor space, incredible views, and outstanding walkability.

Highlights

Fireplace

Property details

MLS #
73567939
Property type
Condominium
Subdivision
N/A
Status
Active
Days on market
48
On market date
August 25, 2026
Stories
2
Total bathrooms
1
Garage spaces
N/A
Parking spaces
N/A
Lot size
N/A
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Nearby schools

Within 10 miles. School directory data from the National Center for Education Statistics (NCES), accessed via the Urban Institute Education Data API. Local Score is calculated by INNOVATE Real Estate; where a state rating is shown, it comes from that state's own official school report card.

Elementary
Michael J Perkins
0.16 mi away · Grades -1-6
Nearest school -- attendance-zone data not available here
5.0
Local Score (student-teacher ratio only (preliminary -- will incorporate state test-score data once available)) -- not an official state rating
Enrollment
173
Student:teacher ratio
9.6:1
District
Boston
MiddleCharter
UP Academy Charter School of Boston
0.19 mi away · Grades 6-8
Nearest school -- attendance-zone data not available here
5.0
Local Score (student-teacher ratio only (preliminary -- will incorporate state test-score data once available)) -- not an official state rating
Enrollment
317
Student:teacher ratio
10.2:1
District
UP Academy Charter School of Boston (District)
High
Excel High School
0.15 mi away · Grades 9-12
Nearest school -- attendance-zone data not available here
5.0
Local Score (student-teacher ratio only (preliminary -- will incorporate state test-score data once available)) -- not an official state rating
Enrollment
439
Student:teacher ratio
10.5:1
District
Boston

Walkability

Blended score for Boston's center, calculated by INNOVATE Real Estate from two sources: the EPA's National Walkability Index (street network, transit, land-use mix) and Google Places amenity data (what's actually reachable on foot from this point). 60% EPA National Walkability Index + 40% nearby-amenity density (Google Places).

83
Highly walkable
out of 100
EPA National Walkability Index
14.2 / 20 -- Above average walkable
Google Places amenity density
100 / 100
Restaurants & cafes20
Grocery stores20
Parks20
Schools19
Transit stops20
Pharmacies10

Market position

How this listing compares to current activity in Boston, from live MLS data.

On the market 48 days -- 72 fewer days than Boston's current average of 120 days.
For reference, the median list price across 8,628 active listings in Boston right now is $49,000.

Mortgage calculator

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Est. monthly payment
$4,244/mo
$135,980 down
$543,920 loan
Principal & interest$3,528
Property tax (est.)$567
Home insurance (est.)$150

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Data source: Listing information provided by MLS Property Information Network via Trestle/CoreLogic. Last updated September 9, 2026.

Information herein deemed reliable but not guaranteed; all measurements, school assignments, HOA fees, taxes, and feature lists are approximate and should be independently verified. Equal Housing Opportunity.