GENEVA, ILL. — Duke Realty Corp. has expanded its industrial building at 1800 Averill Road in Geneva by 163,214 square feet to accommodate the needs of Peacock Engineering Co. The packaging company will continue to lease the existing 243,000-square-foot building, as well as the new expansion space. Peacock has also renewed its lease at 720 Center Ave., a 360,648-square-foot Duke Realty building in Carol Stream. Brian Kling of Colliers International represented the tenant in the lease transactions. Duke Realty was self-represented by Susan Bergdoll.