FORT WAYNE, Ind. (WOWO): Industrial space in northeast Indiana is getting crowded.

With an industrial vacancy rate of 4.01%, local industrial inventory space in Allen and Adams, DeKalb, Huntington, LaGrange, Noble, Steuben, Wabash, Wells and Whitley counties is the lowest on record, according to the Journal Gazette.

The study finds that five “shell buildings” are in the works, with four of them already under construction, to counter the lack of space. A total of almost 2.5-million square feet of new construction was part of the total industrial inventory for 2018.

Almost half of the area’s total industrial space is in Allen County.