The developer behind the Streets of St. Charles office, retail and residential development is gearing up to expand the mixed-use project's footprint.

Peoria-based Cullinan Properties says construction should start in the spring on a new three-level office and retail building at the northeast corner of Beale and Lombard streets.

In addition to 20,000 square feet of ground-floor commercial space, some 40,000 square feet of office space will be available on the upper floors. Tenant space should be available by late 2018.

The 27-acre mixed-use Streets of St. Charles opened its first spaces in 2012 on the site of the old Noah’s Ark restaurant and motel. Recently, a Drury Plaza Hotel opened in the development, and a Tru Hotel by Hilton is currently under construction.

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