SBAC SBA Communications Corporation

POWER OF ATTORNEY Know all by these presents, that the undersigned hereby constitutes* and appoints each of Thomas P. Hunt and Joshua Koenig, signing singly, the* undersigned's true and lawful attorney-in-fact to: (1) execute for and on behalf of the undersigned, in the undersigned's* capacity as a director of SBA Communications Corporation (the "Company"),* Forms 3, 4, and 5 in accordance with Section 16(a)of the Securities Exchange* Act of 1934 and the rules thereunder; (2) do and perform any and all acts for and on behalf of the undersigned* which may be necessary or desirable to complete and execute any such Form 3,* 4, or 5, complete and execute any amendment or amendments thereto, and timely* file such form with the United States Securities and Exchange Commission and* any stock exchange or similar authority; and (3) take any other action of any type whatsoever in connection with* the foregoing which, in the opinion of such attorney-in-fact, may be of* benefit to, in the best interest of, or legally required by,the undersigned,* it being understood that the documents executed by such attorney-in-fact on* behalf of the undersigned pursuant to this Power of Attorney shall be in* such form and shall contain such terms and conditions as such attorney-* in-fact may approve in such attorney-in-fact's discretion. The undersigned hereby grants to each such attorney-in-fact full* power and authority to do and perform any and every act and thing whatsoever* requisite, necessary, or proper to be done in the exercise of any of the* rights and powers herein granted, as fully to all intents and purposes as* the undersigned might or could do if personally present, with full power of* substitution or revocation, hereby ratifying and confirming all that such* attorney-in-fact, or such attorney-in-fact's substitute or substitutes, shall* lawfully do or cause to be done by virtue of this Power of Attorney and the* rights and powers herein granted. The undersigned acknowledges that the* foregoing attorneys-in-fact, in serving in such capacity at the request of* the undersigned, are not assuming, nor is the Company assuming, any of the* undersigned's responsibilities to comply with Section 16 of the Securities* Exchange Act of 1934, as amended. This Power of Attorney shall remain in full force and effect until* the undersigned is no longer required to file Forms 3, 4, and 5 with respect* to the undersigned's holdings of and transactions in securities issued by the* Company, unless earlier revoked by the undersigned in a signed writing* delivered to the foregoing attorneys-in-fact. IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney* to be executed as of this 30 day of April, 2015. /s/ Mary S. Chan Name: Mary S. Chan