The owner of Casa Lever and St. Ambroeus restaurants, SA Hospitality Group, is expanding and moving to 950 Third Ave. at the southwest corner of East 57th Street.

The new digs on a portion of the fifth floor are a mere 7,652 square feet, but has three corners of glass. It’s also three times larger than its current cramped quarters at the nearby 136 E. 57th St., which was sold.

“As a smallish tenant, it’s good to be in a small floorplate building as you get more glass,” explained Alex Cohen of Compass, who represented the company along with colleague Samantha Tannehill.