To renovate a house in Oahu, Hawaii, the average cost ranges between $10,000 and $120,000. Keep in mind there are several factors to consider when determining the cost such as the type of remodeling, the approach taken, the size of the project, the materials and equipment needed, the labor required, and the amount of cleanup. The best way to find a definitive cost for your Oahu home remodeling project is to ask for an exact estimate from TAL Builders’ home construction contractors.