191 Commonwealth Avenue, #PH61
Boston, MA 02116
$9,750,000 - Back Bay
Gracious south-facing Back Bay penthouse in the historic Hotel Agassiz, an 1872 Gothic Revival landmark by Weston and Reed, one of Back Bay's first "French Flats" buildings. Enter via a marble octagonal lobby with door attendant service to this meticulously restored, sun-filled 4,072 square foot, 3-plus-bedroom, 3.5 bathroom residence. A grand, skylit foyer with white oak floors and fine millwork leads to a formal dining room and family room with marble fireplace, custom built-ins, and Commonwealth Ave Mall views. The chef's kitchen boasts a 10' marble island, custom cabinetry, Sub-Zero refrigerator, pantry, and dedicated wine cooler. A sun-splashed sitting room, study with marble fireplace, and guest bedroom suite complete one wing; a primary suite with walk-in closet and marble en-suite bath, plus a second en-suite bedroom, anchor the private quarters. Central AC, ground-floor storage, and bike storage included. Steps to Newbury Street and the Esplanade.
| Listing ID: | 73572912 |
|---|---|
| List Price: | $9,750,000 |
| Property Type: | Residential |
| Property Sub Type: | Condominium |
| Status: | Active |
| Bedrooms Total: | 4 |
| Bathrooms Full: | 3 |
| Bathrooms Half: | 1 |
| Living Area: | 4,072 |
| Association Fee: | $3,491 |
| Tax Annual Amount: | $65,895 |
| City: | Boston |
| MLS Area Major: | Back Bay |
| County Or Parish: | Suffolk |
| Postal Code: | 02116 |
| Year Built: | 1899 |
| Number Of Units Total: | 16 |
| Cooling: | Central Air |
| Heating: | Central |
| Parking Features: | Deeded |
| Status: | Active |
| State Or Province: | MA |
| Water Source: | Public |
| Association Fee Frequency: | Monthly |
| Listing Contract Date: | 2026-09-08 |
| Cooling?: | Yes |
| Fireplace?: | Yes |
| Heating?: | Yes |
| Fireplaces Total: | 3 |
| Rooms Total: | 9 |
| Association Fee Includes: | Electricity, Water, Sewer, Insurance, Security, Maintenance Structure, Maintenance Grounds, Reserve Funds |
| Bathrooms Total Integer: | 4 |
| Basement: | false |
| Basement: | N |
| Building Area Source: | Public Records |
| Living Area Units: | Square Feet |
| Lot Size Units: | Acres |
| Parcel Number: | 3351450 |
| Sewer: | Public Sewer |
| Structure Type: | Brownstone |
| Zoning: | 00000 |
| Stories Total: | 1 |
| Year Built Source: | Public Records |
| Entry Level: | 6 |
| Farm Land Area Units: | Square Feet |
| Disclosure: | No |
| Dpr Flag: | No |
| Lead Paint: | Unknown |
| Listing Alert: | No |
| List Price Per Sqft: | $2,394.40 |
| Page: | 0000 |
| Price Per Sqft: | $2,394.40 |
| Square Feet Incl Base: | No |
| Unit Building: | PH61 |
| Original List Price: | $9,750,000 |
| Parking Total: | 1 |
| Room Master Bathroom Features: | Yes |
| Tax Assessed Value: | $5,613,600 |
| Tax Year: | 2026 |
| Year Built Details: | Approximate |
| Building Area Total: | 4,072 |
| Above Grade Finished Area: | 4,072 |
| Open Parking Spaces: | 1 |
| Living Area Source: | Public Record |
| Beachfront Flag: | No |
Listing Courtesy of: Campion & Company Fine Homes Real Estate
Listing Agent: Tracy Campion
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MLS Property Information Network, Inc. data last updated on October 08, 2026 04:59 PM - ET
Property Last Updated: October 08, 2026 04:59 PM - ET
