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ROH §21-4.50

Rules for Lots Split Between Two Zoning Districts

Read the official text at honolulu.gov ↗

This section explains how to apply zoning rules when one lot is in two different zoning districts. For uses allowed in both districts, you can ignore the boundary for yard and height rules. For uses allowed in only one district, each part of the lot follows its own district's rules. It also gives formulas for floor area ratio and maximum building area when both districts allow the same use but have different limits.

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The ordinance, as written (Honolulu County) — Lots in two zoning districts

A copy, taken August 22, 2026. The version published by Honolulu is the one that governs, and it may have changed since. Check it before relying on anything here.

The following apply to lots within two or more zoning districts or precincts: (a) For a use common to the districts or precincts, district or precinct boundary lines may be ignored for the purpose of yard, height setback, and height requirements; (b) For uses not common to the districts or precincts, yard, height setback, and height regulations of each individual district or precinct will be applicable from the lot lines on the portions of the lot lying within that district or precinct; (c) Where a lot lies in two zoning districts and a permitted use is common to both districts, but the floor area ratios differ, the floor area ratios will be calculated by the following formula, where: A = FAR for total parcel in most intense district. B = FAR for total parcel in least intense district. C = Area of parcel in most intense district. and (d) Where a lot lies in two zoning districts and a permitted use is common to both districts, but the maximum building area differs, the maximum building area will be calculated by the following formula, where: A’ = Maximum building area (percent of) for zoning lot A. B’ = Maximum building area (percent of) for zoning lot B. A’ x (Lot area of zoning lot A) + B’ x (Lot area of zoning lot B).
Read the official text at honolulu.gov ↗as published Jan 1, 2026our copy taken Aug 22, 2026

Published by the City and County of Honolulu through American Legal Publishing.

LawTrove is not legal advice. The summary above is a computer-generated restatement — the authoritative text is the official version linked above.