92 A permit takes effect at the expiration of 14 days after the date on which it was granted or unless an appeal to the Tribunal is instituted (LUPA Act, s53(1)). In the event of an appeal to the Tribunal, the permit would take effect on the Tribunal's determination of the appeal or upon abandonment of the appeal (LUPA Act, s53(3)), unless the Tribunal varies or sets aside the decision regarding the permit or makes a substituted decision or remits the matter for reconsideration (RMPAT Act, s23(2)), or unless there is an appeal to the Supreme Court from that determination and the Supreme Court stays the Tribunal's order (RMPAT Act, s26). Once the appeal is determined by the Supreme Court then it may affirm a decision of the Tribunal, or set it aside (RMPAT Act, s25(6)). A further provision to keep in mind is LUPA,s53(5) which provides that if the use or development is not substantially commenced, permits expire after two years from the date on which the permit was granted, or if there is an appeal in relation to the grant of the permit, the date of the determination or abandonment of the appeal, or unless the planning authority has granted an extension of time under s53(5)(b).