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Honolulu County, HI Building Safety: Green Building Code (2026)

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

Key Facts

Standard
LEED Silver, U.S. Green Building Council
Size threshold
Floor area over 5,000 sq ft
Funding trigger
FY2008 capital budgets and later
Exempt facility types
Wastewater treatment, solid waste
Waiver authority
Director, Dept. of Design and Construction
Applies to
City-owned facilities only
Enacted by
Ordinance 16-29

Summary

City and County of Honolulu facilities larger than 5,000 square feet must be designed to LEED Silver, the U.S. Green Building Council's minimum sustainability standard, under Revised Ordinances of Honolulu § 2-39.3. The mandate applies only to municipal buildings funded through the executive capital budget for fiscal year 2008 and later; it does not reach privately owned construction anywhere on Oahu.

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.

(a) Qualifying city facilities shall comply with LEED™ Silver, in the version most recently adopted by the U.S. Green Building Council, as a minimum design standard. (b) As used in this section, "qualifying city facilities" means facilities with a floor area greater than 5,000 square feet, the design of which is appropriated in the executive capital budgets for the fiscal years 2008 and thereafter. The term excludes wastewater treatment, solid waste, and other facilities for which LEED™ certification is not available or facilities for which the director of design and construction has determined that compliance with LEED™ Silver would be infeasible or inappropriate.

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

Section 2-39.3, enacted by Ordinance 16-29 within the Department of Design and Construction article of the Revised Ordinances of Honolulu, sets a design floor for city-owned buildings rather than a citywide building code requirement. Subsection (a) requires "qualifying city facilities" to comply with LEED Silver "in the version most recently adopted by the U.S. Green Building Council, as a minimum design standard." LEED Silver sits above base certification and below Gold and Platinum in the Council's four-tier rating system, and the ordinance ties compliance to whichever edition of the rating system the Council currently publishes rather than freezing it to a 2008-era version.

Subsection (b) defines the facilities the mandate reaches: any city facility with a floor area over 5,000 square feet whose design was appropriated in the executive capital budget for fiscal year 2008 or any fiscal year after. Smaller buildings and anything designed before that FY2008 budget cycle fall outside the section entirely. The subsection then carves out categories that never have to meet LEED Silver: wastewater treatment facilities, solid waste facilities, and "other facilities for which LEED certification is not available." A further path around the standard exists at the director level: the director of the Department of Design and Construction, the agency responsible under § 2-39.1 for planning, engineering, design and construction of city buildings, may determine on a project-by-project basis that LEED Silver compliance "would be infeasible or inappropriate," releasing that specific facility from the requirement.

Because the standard runs through the capital budget appropriation process rather than a building-permit counter, compliance is built into project design at the funding and design-review stage. Nothing in § 2-39.3 extends the LEED Silver requirement to privately financed construction, state facilities, or federal buildings on Oahu; it binds only city-appropriated projects over the 5,000-square-foot threshold.

Violations & Fines

Section 2-39.3 carries no fine or citation provision: it is a design standard for the city's own capital projects, not a code enforced against builders or the public. Compliance is controlled administratively, through the executive capital budget appropriation and the Department of Design and Construction's project design review, and the director may exempt a specific facility as infeasible or inappropriate. There is no permit denial or penalty mechanism written into this section for the public to be cited under.

Frequently Asked Questions

Does Honolulu's LEED Silver rule apply to private buildings?
No. ROH § 2-39.3 only binds "qualifying city facilities" appropriated in the city's own executive capital budget. Private homes, private commercial buildings, and even state or federal buildings on Oahu are outside this section; it governs city government construction projects exclusively.
What size city building triggers the LEED Silver requirement?
A city facility must have a floor area greater than 5,000 square feet and be appropriated in the executive capital budget for fiscal year 2008 or a later fiscal year. Smaller facilities and pre-FY2008 projects are not "qualifying city facilities" under the definition in § 2-39.3(b).
Can a city facility skip LEED Silver?
Yes, in three situations. The facility can be a wastewater treatment or solid waste facility, LEED certification can be unavailable for that facility type, or the director of the Department of Design and Construction can determine compliance would be infeasible or inappropriate for that specific project.
Which agency enforces the green building standard?
The Department of Design and Construction, the same department responsible under ROH § 2-39.1 for planning, engineering, design and construction of city buildings, structures and grounds. Its director also holds the authority to exempt an individual qualifying facility from the LEED Silver standard.

Sources & Official References

Other rules in Honolulu County

All Honolulu County rules

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