ROH §21-8.40
Zero lot line housing
Read the official text at honolulu.gov ↗This section explains why the county allows zero lot line housing. It lets homes be built like single-family houses but on smaller lots with less street frontage, saving money without changing density rules. It also aims to create more usable yard space and support urban infill in new and existing neighborhoods.
developershomeowners
The ordinance, as written (Honolulu County) — Housing - Zero lot line development
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 purposes of this section are as follows:
(a) To allow housing that has the attributes of single-unit dwellings, but with cost savings due to less street frontage per zoning lot and smaller lot sizes, without changing the underlying zoning district density controls; and
(b) To offer more usable yard space and allow more efficient use of land.
It is the intent that zero lot line housing be applied to both new and existing neighborhoods, and be used as a method for urban infill.
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.