Any action of the Zoning Board of Adjustment or of the Mayor and Borough Council wherein a variance pursuant to law is approved shall be of no force and effect after the expiration of one year form the date of granting of such application for a variance by either the Zoning Board of Adjustment or the Mayor and Borough Council. However, if during the one-year period a building permit shall be issued pursuant to the granted variance, the time limitation shall be extended for a period of one year from the date of issuance of the building permit. Variances granted prior to December 19, 1989, shall be of no force and effect after the expiration of one year therefrom unless during such one-year period a building permit is issued upon such variance as granted, in which event, the period of validity shall be extended for one year from the date of issuance of the building permit. The period of validity of variance as granted as herein set forth shall not be extended or enlarged by virtue of the fact that any other ordinance of the Borough may provide for a longer period of validity of a building permit and the time limitations set forth herein shall prevail over any other such ordinance. Building permits issued by virtue of the granting of a variance shall be subject to the limitations herein set forth and such building permits shall be of no force and effect after the expiration of the time limitations herein set forth.