Ordered that the order is affirmed, with costs.
Leave to amend a pleading "shall be freely given" in the absence of surprise or prejudice (CPLR 3025 [b]). However, the determination whether to grant such leave is within the court's discretion, and the exercise of that discretion will not be lightly disturbed ( see Sewkarran v. DeBellis, 11 AD3d 445; Travelers Prop. Cas. v. Powell, 289 AD2d 564, 565). Given the plaintiffs' extended delay in moving for leave to amend their complaint, and the lack of a reasonable excuse for the delay in seeking that relief, the defendants were prejudiced. Thus, the Supreme Court providently exercised its discretion in denying the plaintiffs' motion for such relief ( see Sewkarran v. DeBellis, supra; Leonardi v. City of New York, 294 AD2d 408; Auwarter v. Malverne Union Free School Dist., 274 AD2d 528, 529).
Moreover, the defendants established their entitlement to judgment as a matter of law by demonstrating that the remaining cause of action for specific performance was rendered academic in light of the sale of the subject premises approximately 15 years ago ( see generally Zuckerman v. City of New York, 49 NY2d 557, 562). The plaintiffs failed to raise a triable issue of fact. Therefore, the Supreme Court properly granted that branch of the defendants' cross motion which was for summary judgment dismissing the complaint.
The plaintiffs' remaining contentions have been rendered academic in light of our determination.