Jacob M. "Jake" Grossman has joined the family business, Quincy-based commercial real estate firm The Grossman Cos. Inc., making him part of the fifth generation in the business.

Grossman’s roles include sourcing new acquisitions and investment partnerships, as well as asset management of the firm’s real estate portfolio, which consists of office, retail, industrial, self-storage and residential properties in southern New England, according to a statement.

"It is a great time to join the business, particularly in light of our acquisition and lending activities over the last 18 months," Grossman said. "We are uniquely positioned in the middle market space to act as an operator, investor, lender and manager of real estate. Under my father’s stewardship, thankfully we sat on the sidelines leading up to and through the downturn in the economy, and as a result, we have capital to deploy intelligently in our niche."

Before joining the family business, Grossman worked for five years at BayNorth Capital, a real estate private equity firm in Boston, where he was responsible for acquisitions and asset management of various real estate asset classes across the country. He previously worked in Cushman & Wakefield’s capital markets group.

"Aside from the fact that he is my brother and we have talked about working as partners since high school, Jake is joining us at an excellent time – and with the perfect skill-set and experience – to help us continue our path of measured growth," said David Grossman.

"I’m excited to be able to come to work each day and talk to my sons as colleagues," said Louis J. Grossman, father and company president. "Now I know how my father felt when I first came into the business, and how his father felt when he did."

Grossman is a member of NAIOP, serves on the board of Boston’s Edward Brooke Charter School and is actively involved with Roxbury Latin School and Combined Jewish Philanthropies.