MEMORANDUM **

Alan Longstaff d/b/a Longstaff Masonry Co. (“Longstaff’) appeals the district court’s order denying his motion for a trial de novo and granting Kato Corporation, Inc.’s (“Kato”) cross-motion for confirmation of the arbitrator’s final award. We have jurisdiction under 28 U.S.C. § 1291. We review de novo the district court’s decision regarding the validity and scope of arbitration clauses. Paulson v. Dean Witter Reynolds, Inc., 905 F.2d 1251, 1254 (9th Cir. 1990). We review de novo the confirmation or vacation of an arbitration award. Coutee v. Barington Capital Group, L.P., 336 F.3d 1128, 1132 (9th Cir. 2003). We affirm.

Because the Stipulation and Order, which stated that the parties shall submit their disputes to binding arbitration, is an agreement in writing to submit an existing controversy to arbitration and supersedes the subcontract agreement, the arbitration is binding on the parties. See 9 U.S.C. § 2; Nghiem v. NEC Electronic, Inc., 25 F.3d 1437, 1440 (9th Cir. 1994) (holding that once a party submits to arbitration, he cannot then change his mind because of an adverse result and is bound by the arbitrator’s decision). Thus, the district court’s confirmation of the arbitrator’s final award, which included an award of attorney’s fees and costs, was proper.

We do not consider issues Longstaff raises for the first time on appeal. See Woods v. Saturn Distribution Corp., 78 F.3d 424, 430 (9th Cir. 1996).

AFFIRMED.