I don't know Hawaiian statutory law regarding states of emergency and executive powers but I know that the precedent that led to the regulatory takings case of Kelo v. New London was a Hawaiian case by the name of Hawaii Housing Authority v. Midkiff, in which the Supreme Court found that a where nearly all land was in the hands of a few private individuals, states may use eminent domain to transfer ownership to dilute the concentration of ownership.
At that time, Hawaii was pretty new still and virtually every parcel of land on the islands were held by a couple dozen elite families. Hawaii is unique when it comes to land use.
https://en.m.wikipedia.org/wiki/Hawaii_Housing_Authority_v._Midkiff