Written notice of each hearing upon any appeal from any order, requirement or decision of the Zoning Enforcement Officer and upon any application for a variance shall be mailed or delivered at least 10 days before such hearing to the Zoning Enforcement Officer, who shall be entitled to appear and be represented by counsel. Written notice of each decision of the Board shall be mailed or delivered, not later than the date such notice is published in a newspaper pursuant to the Zoning Enabling Act, to the Zoning Enforcement Officer. No variance shall be effective until a copy thereof, certified by the Zoning Board of Appeals, containing a description of the premises to which it relates and specifying the nature of such variance, including the regulation which is varied in its application, and stating the name of the owner of record, is recorded in the Killingworth Land Records.