Boston Life Science Property Jumps in Value: Diversified Healthcare Trust has brought in a second joint venture partner for its life science office property in Boston’s Seaport District. An unnamed global institutional investor acquired a 35% interest in the two-building site for $378 million, according to Diversified Healthcare. The purchase price was based on a valuation of $1.7 billion, less the $620 million of existing securitized debt, the company said.