Which department regulates subdivision approval in Hawaii?

The department responsible for regulating subdivision approval in Hawaii is the Department of Commerce and Consumer Affairs (DCCA). The DCCA plays a significant role in overseeing various aspects of real estate, including the approval processes for subdivisions. This involvement ensures that real estate developments comply with state laws and regulations, particularly those aimed at consumer protection and promoting fair practices in the real estate market.

Other departments or organizations, while integral to the broader realm of real estate and development, do not hold the specific regulatory authority over subdivision approvals. For instance, the Real Estate Commission primarily focuses on licensing and regulating real estate brokers and salespersons, while OILSR (Office of Integrated Land and Water Management) deals with land use planning and resource management. HUD (Housing and Urban Development) is a federal entity that addresses broader housing policies and does not engage in state-level subdivision approval processes. Therefore, the DCCA's specific regulatory functions make it the correct answer in this context.