Exhibit

We hereby consent to the incorporation by reference in the Registration Statements on Forms S-8 (No. 333-118659, 333-163843, 333-181715 and 333-188801) and the Registration Statement on Form S-3 ASR (No. 333-203074) of Crown Castle International Corp. of our report dated February 22, 2016 relating to the financial statements, the financial statement schedules and the effectiveness of internal control over financial reporting, which appears in this Form 10-K.