The Cosmopolitan

771 Harrison Avenue, Unit PH12, South EndBoston, MA 02118MLS Number 73555758

  • Price: $1,499,000
  • Est. Mortgage of $/month
  • 1 Day on Market
$
$
%
$/month over payments
Federal 30-year interest rate: 6.58% last updated on Jul 23, 2026
* All Figures are estimates. Check with your bank or proposed mortgage company for actual interest rates.
This product uses the FRED® API but is not endorsed or certified by the Federal Reserve Bank of St. Louis.
  • 3Bedrooms
  • 4Bathrooms
  • 1858Year Built
  • 2,361Square Feet
Open House
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Cape Coastal Sotheby's International Realty
Cape Coastal Sotheby's International Realty
Office: 508-477-6688
540 Falmouth Road (Mashpee Rotary)
Mashpee, MA 02649
Stunning 3+ bed / 3.5 bath Penthouse at The Cosmopolitan in the South End. Completed in 2021, boutique luxury building offers 63 loft-style residences w/ concierge, fitness center, residents lounge, bike storage & a tranquil courtyard. This enormous triplex has over 2,300 sq/ft of living space & 1 garage parking. Top floor features open living & dining area w/ vaulted ceilings & wall of sliders leading to private terrace w/ sweeping Boston views. Upgraded kitchen package w/ Thermador appliances, gas cooking & quartz counters. Oversized primary suite w/ walk-in closet & en-suite bath w/ double vanity, soaking tub & glass shower. Adjacent bedroom w/ en-suite bath. Plenty of additional room for home office, gym or media room w/ built-in wet bar. In-unit laundry & AC. Originally built in 1858 as the first site of Boston College, the building was converted to 63 luxury condos in 2021 while preserving historic details including stained glass windows, stone arches, iconic faade & courtyard w/ magnolia trees. Ideally located across from the BU Medical Campus & steps to parks, restaurants & shops.1 YEAR OF PAID CONDO FEES WITH SIGNED P&S BY 8/31!

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Open Houses

August 1st
Starts: 1:00pm
Ends: 2:00pm

More Info

Basic Information

  • Bedrooms3
  • Mls StatusNew
  • Bathroom4
  • Parcel Number 5201430
  • Unit NumberPH12

Location

  • NeighborhoodSouth End
  • SubdivisionSouth End
  • Address771 Harrison Avenue
  • Building Number771
  • CountySuffolk
  • StateMA
  • StreetHarrison Avenue
  • TownBoston
  • Zip02118

Property Information

  • Square Feet2,361
  • Building Area Source Master Deed
  • Living Area 2,361
  • Lot Size Units Acres
  • Property Attached YN Yes
  • Structure Type Mid-Rise

Tax Information

  • Tax Assessed Value $1,372,500
  • Tax Year 2027
  • Taxes$15,894

Rooms

  • Bathrooms Total Decimal 3.5
  • Full Bath3
  • Half Baths1

Building

  • BasementN
  • Building Area Units Square Feet
  • Common Walls No One Above
  • Entry Level 5
  • Garage Spaces1
  • Patio And Porch Features Deck
  • Property NameThe Cosmopolitan
  • Rooms8
  • Stories3
  • Window Features Insulated Windows
  • Year Built1858
  • Year Built Details Approximate
  • Year Built Effective 2021
  • Year Built Source Owner

Other

  • Association Fee $2,267
  • Association Fee Frequency Monthly
  • Association Fee Includes
    • Gas
    • Heat
    • Insurance
    • Maintenance Grounds
    • Maintenance Structure
    • Reserve Funds
    • Security
    • Sewer
    • Snow Removal
    • Water
  • Date Listed07/28/2026
  • Farm Land Area Units Square Feet
  • View Count1

Parking

  • Parking Spaces1
  • Covered Spaces 1
  • Garage YN Yes
  • Parking Features Deeded

Basic Information

  • List Price$1,499,000
  • MLSPIN 73555758
  • Modification Date07/28/2026
  • Property SubTypeCondominium

Exterior

  • Exterior Features Deck

Utilities

  • Cooling Central Air
  • Cooling YN Yes
  • Heat SystemYes
  • Heating Forced Air
  • Sewer Public Sewer
  • Water Source Public

Amenities

  • Amenities
    • Highway Access
    • House of Worship
    • Medical Facility
    • Park
    • Public Transportation
    • Shopping
    • University
  • Appliances IncludedRange, Dishwasher, Disposal, Microwave, Refrigerator, Washer, Dryer
  • Association Amenities Hot Water, Elevator(s), Fitness Center, Clubroom, Storage
  • Green Energy Efficient Thermostat
  • PetsYes w/ Restrictions
  • Security Features Intercom, Concierge

Driving Directions

Listed by Dave Costello & Scott Accorsini Team of Gibson Sotheby's International Realty

South End Boston, MA Demographics

There is no data available

South End Boston, MA Real Estate Market Data

There is no data available

South End Boston, MA Schools

School NameDistanceTypeGrades

The property listing data and information, or the Images, set forth herein were provided to MLS Property Information Network, Inc. (MLSPIN) from third party sources, including sellers, lessors and public records, and were compiled by MLSPIN. The property listing data and information, and the Images, are for the personal, non-commercial use of consumers having a good faith interest in purchasing or leasing listed properties of the type displayed to them and may not be used for any purpose other than to identify prospective properties which such consumers may have a good faith interest in purchasing or leasing. MLSPIN and its subscribers disclaim any and all representations and warranties as to the accuracy of the property listing data and information, or as to the accuracy of any of the Images, set forth herein.

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