Exhibit 23.1
CONSENT OF INDEPENDENT AUDITORS
We consent to the incorporation by reference in Registration Statements on FormsS-8 (No.333-212383,333-118659,333-163843,333-181715, and333-188801) of Crown Castle International Corp and Registration Statement on FormS-3 ASR (No.333-203074) of Crown Castle International Corp. of our report dated March 10, 2017 related to the consolidated financial statements of LTS Group Holdings LLC and its subsidiary as of and for the year ended December 31, 2016, appearing in this Form8-K of Crown Castle International Corp. dated July 19, 2017.
/s/ DELOITTE & TOUCHE LLP
Rochester, New York
July 19, 2017