Haw. Rev. Stat. § 53-9

The redevelopment agency may, by letting of contracts therefor, or by using its own employees, clear the acquired areas and maintain and repair or rehabilitate, but not reconstruct or enlarge, any structure (except structures to be held and used by the government for public purposes); provided that any work, the estimated cost of which is in excess of $1,000, shall be let only in accordance with chapter 103D.