The most expensive condo sold in Boston in 2025 so far is a unit at

776 Boylston St (Mandarin Oriental, Back Bay)

for $17,000,000.

Another top sale includes a unit at

(Four Seasons Private Residences) for $14,500,000.

It is important to note that a penthouse at the St. Regis Residences in the Seaport District was listed for a record-breaking $49.5 million in June 2025, though its sale has not been reported as finalized in the available data.

Top Boston Condo Sales in 2025 (Partial List)

Based on data available through September 2025, the highest confirmed sales include:

Address	Neighborhood	Sale Price
776 Boylston St Unit E12-C	Back Bay	$17,000,000
2 Commonwealth Unit 16B/C/D	Back Bay	$15,000,000
1 Dalton St Unit 5401	Back Bay	$14,500,000
1 Dalton St Unit 5201	Back Bay	$14,000,000