In the event that a building or other structure substantially occupied or utilized by a non-conforming use is damaged or destroyed to a lesser extent than that specified in Sections 52-51 to 52-54, inclusive, relating to Damage, Destruction or Demolition, the building or other structure may be restored and the non-conforming use of such building or other structure or zoning lot may be continued, provided that such restoration shall not create a non-compliance or increase the degree of non-compliance, if any, existing prior to such damage, destruction or demolition.