2018 so as to result in a final fiscal year 2018 appropriation from the general fund estimated at zero, and fees pursuant to such section 620 shall be modified as necessary to ensure such a final fiscal year 2018 appropriation: Provided further , That for the dispute resolution and installation programs, the Secretary of Housing and Urban Development may assess and collect fees from any program participant: Provided further , That such collections shall be deposited into the Fund, and the Secretary, as provided herein, may use such collections, as well as fees collected under section 620, for necessary expenses of such Act: Provided further , That, notwithstanding the requirements of section 620 of such Act, the Secretary may carry out responsibilities of the Secretary under such Act through the use of approved service providers that are paid directly by the recipients of their services. Federal housing administration Mutual mortgage insurance program account New commitments to guarantee single family loans insured under the Mutual Mortgage Insurance Fund shall not exceed $400,000,000,000, to remain available until September 30, 2019: Provided , That during fiscal year 2018, obligations to make direct loans to carry out the purposes of section 204(g) of the National Housing Act, as amended, shall not exceed $5,000,000: Provided further , That the foregoing amount in the previous proviso shall be for loans to nonprofit and governmental entities in connection with sales of single family real properties owned by the Secretary and formerly insured under the Mutual Mortgage Insurance Fund: Provided further , That for administrative contract expenses of the Federal Housing Administration, $135,000,000, to remain available until September 30, 2019: Provided further , That to the extent guaranteed loan commitments exceed $200,000,000,000 on or before April 1, 2018, an additional $1,400 for administrative contract expenses shall be available for each $1,000,000 in additional guaranteed loan commitments (including a pro