It shall be unlawful to maintain or permit the existence of any unsafe building in the city, and it shall be unlawful for the owner, occupant, or person in custody of any dangerous building to permit the same to remain in an unsafe condition or to occupy the building or permit it to be occupied while it is in an unsafe condition.
(Neb. RS 18-1720, 18-1722, 18-1722.01) (Prior Code, § 9-502) Penalty, see § 150.999