“Cost,” as applied to a project, or portion thereof, financed under this division, means all, or any part of, the costs of construction and acquisition of all lands, structures, real or personal property, rights, rights-of-way, franchises, easements, and interests acquired or used for a project, the cost of demolition or removal of any buildings or structures on land so acquired, including the cost of acquiring any lands on which buildings or structures may be removed, the cost of all machinery and equipment, financing charges, interest prior to, during, and for a period after completion of the construction, as determined by the authority, provisions for working capital, reserves for principal and interest, and for extensions, enlargements, additions, replacements, renovations, and improvements, the cost of architectural, engineering, financial, and legal services, plans, specifications, estimates, administrative expenses, and other expenses necessary or incident to determining the feasibility of constructing any project, or incident to the construction or acquisition or financing of any project.