Hello You did not inform the period to which the question refers, which makes it difficult to elaborate a specific and efficient answer, but I will try to help you in the best possible way.
African Americans suffered a lot of prejudice when they needed to search for housing and were constantly discriminated against. Many neighborhoods did not allow houses to be rented or sold to African Americans and when they did, they charged exorbitant prices, much higher than the prices invested by white families. This type of behavior was one of the main factors that motivated the fight for civil rights, where activists affirmed that as citizens and taxpayers, blacks had the right to quality housing, without being discriminated against. This encouraged the creation of fair housing legislation, which prohibited any type of discrimination in contracts for renting and selling houses to anyone. In this way, African-Americans had some protection that positively impacted their lives.