A spokeswoman for the company tells GlobeSt.com that the plansare still new, and it's not clear what kind of retail will beadded. She says more than 15 retailers are in negotiation for theproperty. "Our options are open," the spokeswoman says. "We arelooking for the perfect tenants, whether they be big box stores,department stores or many small specialty retailers, and maybe aneatery."

She says since the retailers aren't chosen, it's not clear howmuch the addition would cost, though she says the average retailsales of stores on the property are at $460 per sf. The collectionof 140 stores, known as the Hip in reference to the property'sacronym, are currently 98% leased, and have been at least 95%leased for 20 years, the spokeswoman says.

The property started out as a 337,000-sf retail property with 45tenants, and has already undergone several expansions. However,this new addition will mark the first time the mall will go outsidethe boundary of its original property. The adjacent parcel, sold byBank of America Corp., includes a LaSalle Bank branch building anda parking lot. Construction on the new addition should start nextfall, the spokeswoman says.