Exhibit 15.1 October 20, 1998 Stratus Properties Inc. 98 San Jacinto Blvd. Suite 220 Austin, TX 78701 Gentlemen: We are aware that Stratus Properties Inc. has incorporated by reference in its Registration Statements (File Nos. 33-78798 and 333-31059) its Form 10-Q for the quarter ended June 30, 1998, which includes our report dated October 20, 1998 covering the unaudited interim financial information contained therein. Pursuant to Regulation C of the Securities Act of 1933 (the Act), this report is not considered a part of the registration statements prepared or certified by our firm or a report prepared or certified by our firm within the meaning of Sections 7 and 11 of the Act. Very truly yours, /s/ Arthur Andersen LLP