Ordered that the judgment is affirmed, with costs.
It is axiomatic that "[w]hen the provisions of a contract are clear and unambiguous, the interpretation thereof is a question of law and effect must be given to the parties' expressed intent" (Campagna v. Braun, 124 A.D.2d 532, 533; see also, Chimart Assocs. v. Paul, 66 N.Y.2d 570, 572; Bethlehem Steel Co. v. Turner Constr. Co., 2 N.Y.2d 456, 460). In this real estate contract at issue, the parties clearly provided that the contract was subject to the purchasers obtaining a commitment for a mortgage on their primary residence within 45 days, and if not, the contract became "null and void" entitling the purchasers to the return of the deposit. It is uncontroverted that the purchasers did not obtain the requisite commitment within 45 days. Based on the clear and unequivocal language agreed to by the parties, we find that the purchasers established their entitlement to summary judgment and the return of their deposit. Furthermore, we conclude that the sellers failed to establish the existence of material factual issues relating to the purchasers' due diligence in obtaining the required loan commitment (see, Alvarez v. Prospect Hosp., 68 N.Y.2d 320, 324). Thus, the Supreme Court properly awarded the purchasers summary judgment, ordering the return of their deposit. Mangano, P.J., Pizzuto, Altman and Krausman, JJ., concur.