Residential segregation persists for a variety of reasons. Segregated neighborhoods may be reinforced by the practice of "steering" by real estate agents. This occurs when a real estate agent makes assumptions about where their client might like to live based on the color of their skin. Housing discrimination may occur when landlords lie about the availability of housing based on the race of the applicant, or give different terms and conditions to the housing based on race; for example, requiring that black families pay a higher security deposit than white families.