Landlords and condo associations may be liable for discrimination by tenants or unit owners against other occupants if they are aware of the conduct and take no action to stop it

New regulations adopted in 2016 provide that a discriminatory housing practice includes "[f]ailing to take prompt action to correct and end a discriminatory housing practice by a third-party, where the person knew or should have known of the discriminatory conduct and had the power to correct it." 24 C.F.R. §100.7(a)(iii), 81 Fed. Reg. 63074, Sept. 14, 2016.