Repairs and maintenance work as required to keep it in sound condition may be made to a nonconforming building or structure, provided the total structure repairs and alterations shall not, during its life subsequent to the date of its becoming a nonconforming use, exceed sixty percent (60%) of the assessed value of the building or structure for tax purposes at such date, unless such building or structure is permanently changed to a conforming use.
(Ord. 21-67. Passed 12-4-67.)