The
Housing Act of 1949 offered federal subsidies to local redevelopment projects, allowing local agencies to clear and sell blighted land for redevelopment, up to a limit of $808 million per year. Federal subsidies helped alleviate potential hurdles in acquiring land with high purchase costs. In some cases, cities were unwilling to progress with slum clearance unless significant amounts of the original upfront cost could be reclaimed by sale of the improved land. Estimates from the
National Association of Home Builders suggested that subsidies authorized to the maximum amount could have cost in excess of $12 billion. The act was hindered by defensive priorities, with clearance grants deferred if the project was not consistent with defense requirements. Clearance of slum and blighted areas could be justified as serving the defensive effort as these areas were considered the most vulnerable in the event of enemy attack. In 1951, 32 cities and towns surveyed indicated that much of their cleared land was to be reused for private residential developments, with some
public housing also included. Some slum clearance projects suffered delays as a result of local resident hostility towards clearance and forced migration. In some neighborhoods, foreign-born and minority ethnic residents occupied some of the worst city center housing, yet they feared moving away from their own language and cultural groups.
African Americans in particular felt strongly that their areas and houses were targeted for urban renewal through means of
ethnic cleansing and that they would be classed as the "wrong" type of people to be living in the city, helpless to prevent it without proper policy or controls in place. Clearance programs garnered some criticism, particularly at the lack of attention given to the potential of regenerating existing structures deemed to be
dilapidated. Some slums may have been viable for inexpensively cleaning up through use of stricter safety and sanitation enforcement. In the mid 20th century, a housing court was established in
Baltimore with the power to impose penalties for violations of agreed codes of practice, which in turn helped to regenerate around 16,000 slum properties. == Redevelopments ==