Federal authorities charged 41 defendants in five separate mortgage-fraud cases in the Chicago area, alleging the defendants used schemes that resulted in $48 million in fraudulently obtained mortgages issued by various lenders.

A total of 37 individuals and four businesses are facing new federal charges stemming from the cases, according to the Department of Justice. The individuals include a vice president of a title company, LaSalle Title Co., mortgage brokers, loan officers, real estate investors, appraisers and an attorney.

The charges allege the defendants falsely inflated the value of dilapidated homes in urban areas and include other schemes that involved million-dollar condominiums in a Chicago high-rises and sprawling homes in affluent suburbs.

The Department of Justice alleges that as a result of the various schemes, the lending companies suffered "millions of dollars in losses after the loans went into default and the properties were foreclosed upon."

The cases include 10 defendants accused of scheming to fraudulently obtain loans totaling more than $17.2 million on various multimillion-dollar condominiums and penthouses, six defendants accused of using stolen of fictitious identities to obtain about $3 million in home loans and a chief executive who allegedly defrauded GMAC Bank out of about $15 million in funding more than 450 fictitious residential loans.

In another case, LaSalle Title and three other businesses allegedly schemed to obtain more than $10 million in loans on 70 residential properties in Chicago, resulting in losses totaling about $5.8 million to various mortgage lenders.

All charges announced Tuesday carry various maximum penalties, including a $1 million fine on each count of mail and wire fraud if a financial institution was affected, or 20 years in prison and a $250,000 fine if there wasn't an impact on financial institutions.

A representative from LaSalle Title wasn't immediately available for comment.

-By John Kell, Dow Jones Newswires; 201-938-5285; john.kell@dowjones.com