Brownfields Redevelopment Tax Incentive Reauthorization Act of 2014 - Amends the Internal Revenue Code to extend through 2018 the election to expense (i.e., deduct in the current taxable year) environmental remediation costs (i.e., costs for the abatement or control of hazardous substances at a qualified contaminated site). Makes this Act applicable to expenditures paid or incurred after December 31, 2011.