the refunded bond is redeemed not later than 90 days after the date of the issuance of the refunding bond. For purposes of subparagraph (A), average maturity shall be determined in accordance with section 147(b)(2)(A). (5) Office space Subsection (b)(2) shall not apply with respect to any qualified governmental building. (6) No depreciation or investment credit No depreciation, amortization, or business credit under section 38 shall be allowed with respect to any facility described in subsection (a)(16) which has been financed by the net proceeds of the issue for so long as such bonds are outstanding. . (c) Governmentally owned requirement Section 142(b)(1)(A) of such Code is amended by striking or (12) and inserting (12), or (16) . (d) Exemption from volume cap on private activity bonds Section 146(g)(3) of such Code is amended by striking or (15) and inserting (15), or (16) . (e) Effective date The amendments made by this section shall apply to bonds issued after the date of the enactment of this Act.