Banks will have to remain vigilant if they want to step up mortgage  lending to credit-impaired borrowers, industry experts warn. 
"Quality control is the most important thing you can do if you want to  be successful," said Neil B. Kornswiet, president of Quality Mortgage USA,   Irvine, Calif.   
  
Mortgage companies must adopt systems to detect unscrupulous consumers  and their representatives, Mr. Kornswiet said at a mortgage conference in   New York sponsored by Executive Enterprises, a firm that specializes in   financial seminars.     
For a long time, most lenders treated borrowers with marred records as  pariahs, but that mind-set is changing, Mr. Kornswiet said. 
  
Right now, about 200 lenders, including bank-affiliated units, are  "strongly" in the business of lending to credit-impaired customers, he   said. These credits are commonly called B and C loans, since they fall   below the A quality that most lenders prefer to deal with. They are also   called subprime loans.       
The B and C products, which can include first mortgages and home equity  loans, typically compensate for their greater risks by carrying higher   rates and fees.   
Regina J. Reed, senior manager with the mortgage group of KPMG Peat  Marwick, New York, said these loans can be more profitable than   conventional loans.   
  
"But they can also be riskier," Ms. Reed said.
Indeed, borrowers who are desperate for financing may go to fraudulent  extremes, executives said. 
Customers with tainted credit are more apt to submit false income  documents and to make properties appear to be worth more than they are,   executives said.   
Brokers are not above using unscrupulous methods in hopes of receiving  their commission on a harder-to-land loan, the executives added. One   mortgage banker told of brokers who puffed up customers' net worth by   submitting doctored tax forms.     
  
Brokers have also been known to make large deposits of their own money  to temporarily boost prospective borrowers' bank accounts. "This is the way   lenders get taken to the cleaners," one veteran mortgage banker said.   
Bankers should train their officers to spot red flags by reviewing loans  that soured in the past, said Jonathan Davis, vice president in the real   estate finance group of Donaldson, Lufkin & Jenrette.   
By understanding the reasons for defaults and delinquencies, loan  officers will be equipped to make appropriate changes or modifications   during the underwriting process, Mr. Davis said.   
Underwriters should also be kept abreast of how well their loans are  doing and how collection efforts are going with problems in the portfolio,   Mr. Davis said.   
Banks would do best to get loan officers who have experience with  consumer finance, said William Garland, senior vice president at Advanta   Mortgage Corp, San Diego.   
"We've not had a good deal of success bringing people in from  conventional shops," Mr. Garland said. 
He also said loan collectors would get a better sense of their customers  "by keeping track of their excuses for late payments. Somebody's mother can   die only so many times."