LOS ANGELES — The Inland Empire could be considered Southern California’s backlot, with its vast warehouse complexes and staging areas.

Typically defined as the region east of Los Angeles and Orange Counties, and encompassing San Bernardino and Riverside Counties, this area of industrial development has been on a long march to recovery since the 2008 financial crisis.

Tens of millions of square feet of warehouse and logistics space have been built since 2011, and tens of millions more are on the way.

By almost 10 million square feet, it had the most industrial space under construction in the second quarter of this year in the nation, according to CoStar, a commercial real estate market research company.