Any building, other structure or use of land which is made nonconforming
by any lot size, open space or height regulation of this chapter or by any
subsequent amendments thereto, may be continued, except as hereinafter provided.
Any nonconforming building, other structure or use of land may be enlarged
or extended, provided that any such enlargement or extension shall comply
with the regulations of this chapter.
Any nonconforming building or other structure may be repaired or structurally
altered, provided that alterations creating enlargements or extensions shall
conform to the regulations of this chapter.
Any nonconforming building or other structure which has been damaged
or destroyed by any means to the extent of 50% or more of its equalized assessed
value, as determined by the Town Assessor of the Town of Boston, or which
has been condemned by the Code Enforcement Officer and ordered to be demolished,
shall not be rebuilt or repaired except in conformance with the regulations
of this chapter. In the case of a permitted restoration of any such nonconforming
use, the degree of nonconformance of the original building or other structure
shall not be increased.