CHICAGO-Another Internet-based firm has decided to make its homewithin Chicago’s Loop. GrubHub, an online andmobile food ordering service, has agreed to a five-year lease forthe top three floors of the historic BurnhamCenter.

The company, founded in 2004, is tripling its current space.About 250 employees occupy about 19,000 square feet at 2211 N.Elston Ave. in the city’s Bucktown neighborhood, and they will moveto 59,463 square feet at 111 W. Washington St.

A spokeswoman for the firm tells GlobeSt.com that the takeoverof New York City-based Dotmenu in September,helped in part by the raise of $84 million in venture capital,really has pushed the growth of the firm to the detriment of workspace. “We knew we had to move when we had to start usingconference rooms as offices,” she says. “The Burnham Center reallyfits all of our needs.”