Photo courtesy of CBRE.

An investment firm that has snapped up three Greater Boston industrial-flex buildings so far this year added another two to its portfolio in recent days.

Berkeley Partners bought 734 Forest St. in Marlborough and 35 Dunham Road in Billerica for $14.55 million, according to CBRE, whose Capital Markets team represented the seller, The RAM Cos.

CBRE’s Debt & Equity team secured debt financing for the transaction.

“The RAM Cos. acquired the assets a few years ago with significant vacancy. They rolled their sleeves up and added significant value. Berkeley Partners was pleased to acquire these well-maintained and well-leased assets,” CBRE’s Doug Jacoby said in a statement.

Totaling 120,796 square feet of flex-industrial space, the two-building portfolio is 100 percent leased and offers a diverse mix of 10 tenants, according to CBRE. The two buildings comprising the portfolio are both one-story multi-tenant assets built in 1984 and 1987, are well-maintained and sit near major highways.