Zoning Change Needed to Turn Historic Mansion into Co-Working Space

An Evanston couple that specializes in co-working spaces want to reposition a historic lakefront mansion into shared offices. Stelios and Angela Valavanis, owners of Creative Coworking, want to adapt Colvin House at 5940 N Sheridan Rd into a shared office space, but the building needs a zoning change in order for that to happen.
Colvin House was built in 1909 by George Maher, a protégé of Frank Lloyd Wright, and is one of the few existing lakefront mansions on Chicago's north side. It was declared a city landmark in 1994 and was listed for sale in April for $1.2M.