Trophy Seaport office tower trades for $435M as institutional capital returns to Boston's premier waterfront district
JLL led the sales efforts for One Marina Park Drive, underscoring investor confidence in irreplaceable Boston assets Key Takeaways Historic transaction volume: The $435 million sale of One Marina Park Drive represents one of the most significant office transactions of 2026, signalling renewed institutional appetite for best-in-class, assets in supply-constrained, premier micro-markets Institutional capital returns to Boston: Oxford Properties' acquisition underscores growing investor confidence in Boston's innovation-driven office market, particularly for irreplaceable waterfront assets in the Seaport Competitive process yields premium pricing: JLL's marketing campaign generated exceptional buyer interest, reflecting strong demand for trophy assets delivering locked-in cash flow, substantial rent growth potential and insurmountable barriers to entry BOSTON, Aug. 24, 2026 /PRNewswire/ -- JLL's Capital Markets group announced today that it has completed the $435 million sale of One Marina Park Drive, a 494,938-square-foot, Tier 1 office tower in Boston's Seaport District. JLL represented the seller, Clarion Partners, in the sale of the asset to Oxford Properties.