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Honolulu County, HI Zoning Overlays & Bonuses: Downtown Design Guide (2026)

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

Key Facts

Governing section
ROH § 21-9.30-4
District
Hawaii Capital Special District
Review focus
Landscaping, height, architectural style
Signs
No box fluorescent or directly illuminated signs

Summary

New construction and renovation in Honolulu's Hawaii Capital Special District, the downtown civic core around the State Capitol, Iolani Palace and King/Beretania Streets, must follow set design guidelines.

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.

(b) Design guidelines for the historic precinct. The following design guidelines shall be used in the design and review of new construction and renovation in the historic precinct. They are intended to promote the concept of “contextualism,” wherein new developments are sensitive to the existing historic and other significant structures;

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

Projects in the Hawaii Capital Special District, covering the downtown blocks around the State Capitol and Iolani Palace, go through design review under ROH § 21-9.30-4. Reviewers apply set landscaping standards, height precincts, and a 'contextualism' design guide covering roof form, architectural style, facade treatment, color, texture, and signage so new buildings read as compatible with the historic precinct.

Violations & Fines

Building without required design review approval or violating an approved design condition is enforced through the Department of Planning and Permitting's standard Land Use Ordinance permit and stop-work process.

Frequently Asked Questions

Does downtown Honolulu have its own design guide?
Yes. The Hawaii Capital Special District around the State Capitol and Iolani Palace has its own landscaping, height, and architectural design controls under ROH § 21-9.30-4.
What architectural styles does the guide encourage?
Modified Mediterranean, Spanish mission, Victorian, U.S. Greek revival, Italianate revival, and French second empire, to match the historic precinct's existing buildings.

Sources & Official References

Other rules in Honolulu County

All Honolulu County rules

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