Honolulu LUO · Residential
What is R-20 zoning in Hawaii?
The lowest-density single-family residential district in Honolulu, with a 20,000-square-foot minimum lot — typically large-lot, estate-style residential areas.
Code
R-20
Category
Residential
Min. lot size
20,000 sq ft
Jurisdiction
Honolulu (Oʻahu)
What you can build in R-20
- Single-family detached dwellings
- Large minimum lot, low coverage
- ADUs on qualifying lots — confirm with DPP
Check the zoning on a specific property
Zoning is assigned parcel by parcel. To see the district, lot size, and land details for any Hawaii property, look it up by its Tax Map Key (TMK).
Look up a parcel by TMK →This is a plain-English overview, not legal or zoning advice. Districts, permitted uses, and minimum lot sizes change and vary by county. Always confirm the current rules for a specific parcel with the relevant county planning department (on Oʻahu, the Department of Planning & Permitting) before relying on them.