Mount Auburn Hospital, a consulting firm and an architecture company have leased a total of 38,736 square feet at 625 Mount Auburn St. in Cambridge.

The three-story office building, purchased by KBS Realty Advisors in 2007, recently inked two new long-term leases with Mount Auburn Hospital on the first floor and HDS Architects, which leased 2,250 square feet on the second floor. Charles River Analytics renewed and expanded its lease on the third floor to 29,860 square feet.

"As exclusive leasing agent we’re pleased to accommodate the growth of these three excellent tenants at 625 Mount Auburn St.," said Robert Fitzgerald of CB Richard Ellis. "On top of attracting HDS Architects, we’re very fortunate to have retained both Mount Auburn Hospital and CRA as we continue to accommodate their growing business needs."

The CBRE team of Robert Fitzgerald, senior vice president/partner and Adam Brinch, associate, facilitated direct deals with Mount Auburn Hospital and HDS Architects. CRA was represented by Curtis Cole, senior vice president/partner at CBRE, while Fitzgerald and Brinch represented the landlord.