Haw. Rev. Stat. § 53-52
Any urban renewal project undertaken pursuant to section 53-51 shall be undertaken in accordance with an urban renewal plan for the area of the project. As used in this chapter, an "urban renewal plan" means a plan, as it exists from time to time, for an urban renewal project, which plan (1) shall conform to the master plan for the county as a whole; or if there is no master plan for the county as a whole, then to the master plan for the urban area as a whole of which the urban renewal project area constitutes a part; and (2) shall be sufficiently complete to indicate such land acquisition, demolition, and removal of structures, redevelopment, improvements, and rehabilitation as may be proposed to be carried out in the area of the urban renewal project, zoning and planning changes, if any, land uses, maximum densities, building requirements, and the plan's relationship to definite local objectives respecting appropriate land uses; improved traffic, public transportation, public utilities, recreational and community facilities, and other public improvements. An urban renewal plan shall be prepared and approved pursuant to the same procedure as provided in this chapter with respect to a redevelopment plan, except as specifically provided in this part.
HRS § 53-52