Whereas shortly before the New Deal, a typical mortgage required a large down payment and full repayment within about 10 years, the creation of the Home Owners Loan Corporation in 1933 and then the Federal Housing Administration the following year allowed banks to offer loans requiring no more than 10 percent down, amortized over 20 to 30 years. Without federal intervention in the housing market, massive suburbanization would have been impossible, writes Thomas J. Sugrue, a historian at the University of Pennsylvania. In 1930, only 30 percent of Americans owned their own homes; by 1960, more than 60 percent were home owners. Home ownership became an emblem of American citizenship.
That emblem was not to be awarded to blacks. The American real-estate industry believed segregation to be a moral principle. As late as 1950, the National Association of Real Estate Boards code of ethics warned that a Realtor should never be instrumental in introducing into a neighborhood
any race or nationality, or any individuals whose presence will clearly be detrimental to property values. A 1943 brochure specified that such potential undesirables might include madams, bootleggers, gangstersand a colored man of means who was giving his children a college education and thought they were entitled to live among whites.
The federal government concurred. It was the Home Owners Loan Corporation, not a private trade association, that pioneered the practice of redlining, selectively granting loans and insisting that any property it insured be covered by a restrictive covenanta clause in the deed forbidding the sale of the property to anyone other than whites. Millions of dollars flowed from tax coffers into segregated white neighborhoods.
http://www.theatlantic.com/features/archive/2014/05/the-case-for-reparations/361631/