; and (3) $42,500,000 for the costs to the Secretary of administering and overseeing the implementation of this section and the Supportive Housing for the Elderly program generally, including information technology, financial reporting, research and evaluation, other cross-program costs in support of programs administered by the Secretary in this title, and other costs. Amounts appropriated by this section shall remain available until September 30, 2033. (b) Limitation on costs When awarding grants under paragraph (1) of subsection (a), the Secretary shall establish and assess reasonable development cost limitations by market area for various types and sizes of supportive housing for the elderly. The Secretary shall not count owner or sponsor contributions of other funding or assistance against the overall cost of a project. (c) Implementation The Secretary shall have authority to issue such regulations, notices, or other guidance, forms, instructions, and publications to carry out the programs, projects, or activities authorized under this section to ensure that such programs, projects, or activities are completed in a timely and effective manner. 106. Improving energy efficiency or water efficiency or climate resilience of affordable housing (a) Appropriation In addition to amounts otherwise available, there is appropriated to the Secretary of Housing and Urban Development (in this section referred to as the Secretary ) for fiscal year 2024, out of any money in the Treasury not otherwise appropriated— (1) $1,770,000,000, to remain available until September 30, 2030, for the cost of providing direct loans, including the costs of modifying such loans, and for grants, as provided for and subject to terms and conditions in subsection (b), including to subsidize gross obligations for the principal amount of direct loans, not to exceed $4,000,000,000, to fund projects that improve the energy or water efficiency, indoor air quality and sustainability improvements, implement low-emission technologies, materials, or