Given the existence of the finder's agreement, dated October 14, 1994, which governs the relationship between the parties, plaintiff is precluded from seeking damages under the quasicontractual theories of quantum meruit and unjust enrichment ( Clark-Fitzpatrick, Inc. v Long Is. R. R. Co., 70 NY2d 382, 388-389). We have considered plaintiffs arguments on its appeal and find them to be without merit.