Honolulu County, HI Accessory Structures: ADU Rental Restrictions (2026)

The accessory dwelling unit may only be used for long-term residential occupancy and may not be used as a bed and breakfast home or transient vacation unit;

(ii)   The deed restrictions lapse upon removal of the accessory dwelling unit;

(iii)   All of the covenants are binding upon any and all heirs, successors, and assigns of the owners; and

(iv)   Neither the owners nor the heirs, successors, or assigns of the owners may submit the zoning lot or any portion thereof to a condominium property regime under the State of Hawaii Condominium Property Act to separate the ownership of an accessory dwelling unit from the ownership of its principal dwelling unit.

(B)   Removal. The owners of an accessory dwelling unit shall notify the department upon removal of the accessory dwelling unit.

(b)   Home occupation standards.

(1)   General.

(A)   The home occupation must be clearly incidental and subordinate to the use of the dwelling unit and zoning lot for residential living.

(B)   The home occupation use may not significantly change the exterior appearance of the dwelling unit, zoning lot, or the surrounding neighborhood. Onsite signage or advertisements for the home occupation is prohibited.

(C)   The outdoor storage of materials or supplies is prohibited.

(D)   The indoor storage of materials or supplies must not exceed 250 cubic feet or 20 percent of the total floor area of the dwelling unit, whichever is greater.