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Honolulu County, HI Building Safety: Building Inspections (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Adopting statute
ROH § 16-1.1, adopts 2018 IBC
Elevation check
IBC § 110.3.3, flood zones only
Lath/gypsum check
IBC § 110.3.5, before plastering
Special inspections
Must be listed on plans, § 110.3.10
Final inspection
Required before certificate of occupancy
Appeal body
9-member Building Board of Appeals

Summary

Honolulu adopts the 2018 International Building Code by reference under ROH § 16-1.1 and rewrites its inspection article to require five checkpoints for any permitted project: flood-zone elevation, lath/gypsum board, special inspections listed on the permit, discretionary spot checks, and a mandatory final inspection before occupancy. Skipping a required stage blocks the certificate of occupancy.

These county ordinances apply to unincorporated areas of Honolulu County. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

110.3 Required inspections. The building official, upon notification, shall make the inspections set forth in Sections 110.3.3, 110.3.5, 110.3.9, 110.3.10, and 110.3.11 of this code. 110.3.3 Lowest floor elevation. In flood hazard areas, upon placement of the lowest floor... an elevation certification required in Section 1612.4 shall be submitted to the building official. 110.3.5 Lath and/or gypsum board inspection. To be made after all lathing and gypsum board... is in place but before any plastering is applied... 110.3.9 Other inspections. In addition to the inspections specified in Sections 110.3.3 and 110.3.5, the building official is authorized to make or require other inspections... 110.3.10 Special inspections. The submitted plans shall have all special inspections listed as a condition for permit issuance... 110.3.11 Final inspection. A final inspection shall be made after all construction is completed and prior to issuance of a final certificate of occupancy.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: 2026 S-10: Supplement 10, 12-2025 Ordinance No. 25-40 through Ordinance No. 25-56).

Full Breakdown

1 adopts the Hawaii State Building Code, which in turn adopts the 2018 International Building Code, and lists local amendments to Section 110. 11" upon notification from the permit holder. 3 requires an elevation certification in flood hazard areas once the lowest floor is placed and before further vertical construction. 5 requires a lath and gypsum board inspection after all fire-resistive lathing and gypsum board is installed but before plaster is applied or joints are taped (Group U occupancies are exempt). 9 lets the building official order additional inspections of any work to confirm code compliance.

10 requires every special inspection to be listed on the submitted plans as a condition of permit issuance, covering the categories in Sections 110, 919, 1704, 1705, and 1707. 1, and Group U occupancies. A property owner who disputes an inspection-related denial, revocation, or enforcement decision can appeal to the nine-member Building Board of Appeals created under added Section 113, which can reverse, affirm, or modify the building official's decision if the record shows an erroneous finding of fact, arbitrary or capricious action, or a manifest abuse of discretion.

Violations & Fines

Occupying or changing the use of a building before the building official issues the required certificate of occupancy under Section 111.1 is enforced the same as any other unpermitted work under Chapter 18 Article 7: a misdemeanor punishable by up to $2,000 in fines, up to one year of imprisonment, or both, with each day of continued noncompliance treated as a separate offense, and the building official may issue a stop-work order under § 18-7.5 until required inspections are completed and passed.

Frequently Asked Questions

What inspections does Honolulu require during construction?
Amended IBC § 110.3 requires the building official to make five categories of inspection: lowest-floor elevation checks in flood zones, lath and gypsum board inspection before plastering, any additional inspection the official deems necessary, all special inspections listed on the approved plans, and a final inspection before a certificate of occupancy issues.
Can I occupy a new building before the final inspection?
No. Amended IBC § 111.1 bars using or occupying a building, or changing its occupancy, until the building official issues a certificate of occupancy, which under § 110.3.11 requires a final inspection after construction is complete. Limited exceptions apply to permit-exempt work, R-3 homes, and Group U buildings.
What if I disagree with a Honolulu building inspector's decision?
You can appeal to the Building Board of Appeals created under Section 113, a nine-member panel of licensed engineers, architects, and trade specialists appointed by the mayor. The board can reverse, affirm, or modify the building official's decision if it was based on an erroneous fact-finding, arbitrary action, or an abuse of discretion.
Are special inspections required on every Honolulu project?
Only when triggered by the code sections listed in IBC § 110.3.10, which references Sections 110, 919, 1704, 1705, and 1707. Where required, every special inspection must be listed on the submitted plans as a condition of permit issuance before the building official approves the permit.

Sources & Official References

Other rules in Honolulu County

All Honolulu County rules

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