Paragon Real Estate Investments of San Diego and its affiliates have purchased 13,602 square feet of ground-floor retail space and a portion of the basement in a 35-story Chicago building for $16 million.

Tenants in the building at 11 South LaSalle St., include Citibank, Roanoke Restaurant and 7-Eleven.

The seller was The Prime Group, represented by Holliday Fenoglio Fowler, LP (HFF) of San Diego.

Paragon Real Estate represented itself.