As used in this chapter, “public work” means the acquisition, construction, or improvement of public works; the acquisition of easements necessary for the public works; the acquisition of real and personal property and interests in real and personal property which are necessary for the public works; and the demolition of structures, site preparation, relocation costs, building rehabilitation and administrative costs, including, but not limited to, the cost of technical and economic feasibility studies or architectural, engineering, legal, and accounting fees, which are necessary for the public works.