A Downtown Phoenix 1931 bank building that was entangled in Mortgages Ltd.’s collapse appears headed for foreclosure.

The 12-story Professional Building at 15 E. Monroe St. is scheduled to be auctioned on April 20, according to a notice of trustee sale filed at the Maricopa County Recorder’s Office. The notice is the first step in the foreclosure process.

When Mortgages Ltd. went bankrupt, developer Grace Communities was transforming the former home of Valley National Bank into a 150-room boutique hotel called Hotel Monroe. Construction stopped, and the partially renovated building sits empty.

Thirteen investors are owed $76.5 million, according to the notice. The largest share is owed to an entity that is managing the remainder of lender Mortgages Ltd.’s assets.

Phoenix-based Mortgages Ltd. was once Arizona’s largest private commercial lender. The firm ran into trouble when the real-estate market crashed, the firm couldn’t raise new capital and couldn’t meet some of its loan obligations.