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ADUs vs. Ohana Units

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Both Ohana units and ADUs are additional units you can add onto your property and can be a great way to have space for family members or to create a rental property. Below is an overview of the differences between the two structures. Please keep in mind that when building any kind of structure, there are many rules and regulations to follow. We strongly recommend that you work with an architect and can refer you to trusted architects on Oahu.

 

ADUs (Accessory Dwelling Units)

  • Use
    • Used for rental units or for family members to live in
    • Only for single family lots, can’t build it on a lot with 2 single-family dwellings
    • There must already be a single-family home on the property
    • The structure can be attached or detached from the main single-family house
  •  Size
    • Lot needs to be at least 3500 sq ft in order to build an ADU
    • If the lot is 3500-4999 sq ft, the maximum size the ADU can be is 400 sq ft
    • For lots 5000 sq ft and larger, you can build up to 800 sq ft structure
  • Occupancy
    • For family members or rentals
      • If you rent, you have to live in one of the two structures
      • Must tent for 6 months or longer, not short term rentals
  • Zoning
      • Must be residential zoned
        • 5, R5, R7.5, R10, R20, or country district CD
  • Parking
    • Must have one parking on property, not on street, dedicated for ADU
    • Parking can’t be in the way of SFH parking
    • If you’re within 1 mile of the rail, you don’t need parking
  • Other Information
    • When you’re ready to sell, you can’t sell it separately from the single-family house
    • There are sewer, septic, cesspool limitations

 

Ohana Units

  • Use
    • Must check the ohana eligibility map to see what areas allow ohana units
    • For family occupancy only
    • Must be attached to the single-family house
  • Size
    • Can be any square footage
  • Parking
    • Must have two parking on property
  • Zoning
    • Ag 1 and Ag 2, R5, R7.5, R10

 

We would be happy to answer any property management or real estate sales questions you have.  Call us to schedule a private consultation at (808) 593-9826 or email concierge@caronb.com