There are many architects of Detroit’s downtown renewal, but none more important than billionaire benefactor Dan Gilbert, the founder of Rocket Mortgage, long known as Quicken Loans.

An Associated Press report on Mr. Gilbert’s new 1.5 million-square-foot mixed-use development at the site of the old Hudson’s department store was published on toledoblade.com Monday.

General Motors is moving its headquarters to the new $1.5 billion skyscraper. The building will include condos, a high-end hotel, event space, and retail locations.

The project is the work of Bedrock Development, Mr. Gilbert’s real estate development company that has more than 100 properties in downtown Detroit. He has invested more than $5 billion in the Motor City.

The Cleveland Cavaliers NBA franchise owner has nearly $2 b

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