WASHINGTON - Fannie Mae and Freddie Mac are criticizing a government  proposal that would require them to boost their financing of low-income   housing.   
The agencies say the new targets are based on faulty assumptions about  the market. 
  
In a rule proposed last fall, the Department of Housing and Urban  Development said it would require the Federal Home Loan Mortgage Corp. and   the Federal National Mortgage Association to make sure that 38% of the   units they financed in 1995 go to low-income and moderate-income borrowers.   That target would be 40% in 1996.       
In comments submitted last week, both mortgage agencies said the targets  were too high. 
  
The Federal National Mortgage Association Mae recommended that the goal  remain at 38% in 1996. 
The target last year was 30%, but Fannie Mae actually hit 45.7% and  Freddie Mac 37%. However, both agencies asserted that HUD has overestimated   the size of the low-income market, and failed adequately to account for the   cyclical nature of the mortgage business.     
Fannie Mae is also taking issue with the way HUD has defined another  targeted category - central cities and other underserved areas. 
  
In transitional goals set under the landmark 1992 Act, which revised the  regulatory framework for Fannie Mae and Freddie Mac, that category included   all areas of a central city.   
The proposed rule defines targeted areas in central cities more narrowly  to include low-income or minority census tracts. 
Freddie Mac has supported the redefinition. But Fannie Mae, which has  set up offices in central cities around the country, said again last week   that it opposes the rule change.   
In its letter, Fannie Mae argued that the new goal would be hard for  lenders to understand. 
  
"The concept of central cities (Los Angeles, Chicago, New York, Miami,  etc.) is easily understandable by our partners in the market. Specific   census tracts within central cities are not," wrote Robert B. Zoellick,   general counsel at Fannie Mae.     
At least one large city - Los Angeles - wrote in to say that it supports  HUD's redefinition because of the pronounced decline of homeownership and   the associated deterioration of inner city Los Angeles.   
Both agencies renewed their opposition to HUD's requirement that they  submit new programs for review. They said existing rules are sufficient,   and heightened review would make it difficult to respond to a changing   market.     
Several lenders echoed this position in letters to HUD.
One market participant - GE Capital Mortgage Corp. - also voiced this  argument. But GE also struck a different note. 
GE Capital's chairman, Gregory T. Barmore, urged HUD to "be vigilant in  assuring nonentry into lines of business which may not be appropriate or   within the scope of (Fannie and Freddie's) authority."