CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the use in this Pre-Effective Amendment No. 3 to Registration Statement No. 333-167434 on Form N-2 of our report dated July 23, 2010, relating to the financial statements of BlackRock Build America Bond Trust appearing in the Statement of Additional Information, which is part of such Registration Statement.

Deloitte & Touche LLP

Princeton, New Jersey
August 24, 2010