Lead-Safe Housing for Kids Act of 2018 This bill amends the Lead-Based Paint Poisoning Prevention Act to direct the Department of Housing and Urban Development (HUD) to promulgate regulations that: require owners of certain housing to initiate a lead-based paint hazard risk assessment before a family with a child under age six occupies such housing, unless lead-based paint has already been removed; state that a visual assessment alone is not sufficient for these purposes; and require owners to control lead-based paint hazards identified in the assessment within 30 days and provide certain notices to residents of the housing. These regulations shall apply to housing receiving federal assistance that was constructed before 1978, but exclude: single-family housing covered by an application for mortgage insurance under the National Housing Act, or multi-family housing that is covered by such an application but does not receive any other federal housing assistance. HUD regulations shall also require emergency relocation of such families, without placement on a waitlist, penalty (including rent payments to be made for that dwelling unit), or lapse in assistance, to a unit that was constructed in 1978 or later or to another unit of covered housing that has no lead-based paint hazards.