Hawaii Zoning & Land Use Guide
Last updated: Verified:
Comprehensive guide to Hawaii zoning laws, building codes, and land use regulations.
Key Facts
- Building Code: 2018 IBC with Hawaii amendments
- State ADU Law: Varies by city
- ADU Details: Hawaii does not have a statewide ADU mandate, though the City and County of Honolulu has adopted local ordinances permitting accessory dwelling units on residentially zoned lots. Other counties handle ADU policy at the local level.
Cities in Hawaii
Aiea
Pop. 10,039
ADU: Allowed
East Honolulu
Pop. 47,868
ADU: Allowed
Ewa Beach
Pop. 24,720
ADU: Allowed
Halawa
Pop. 14,224
ADU: Allowed
Hilo
Pop. 45,486
ADU: Allowed
Honolulu
Pop. 350,964
ADU: Allowed
Kahului
Pop. 26,337
ADU: Allowed
Kailua
Pop. 40,514
ADU: Allowed
Kailua-Kona
Pop. 14,165
ADU: Allowed
Kaneohe
Pop. 35,471
ADU: Allowed
Kapolei
Pop. 21,541
ADU: Allowed
Kihei
Pop. 23,456
ADU: Allowed
Lahaina
Pop. 12,702
ADU: Allowed
Makakilo
Pop. 19,245
ADU: Allowed
Mililani Town
Pop. 27,629
ADU: Allowed
Pearl City
Pop. 45,458
ADU: Allowed
Schofield Barracks
Pop. 16,370
ADU: Restricted
Wailuku
Pop. 16,812
ADU: Allowed
Waimalu
Pop. 13,885
ADU: Allowed
Waipahu
Pop. 38,216
ADU: Allowed
Disclaimer: The information on this website is provided for general informational purposes only and does not constitute legal, financial, or professional advice. Always verify current requirements with your local planning department.