Retaining wall permit checklist — Honolulu, Hawaii
Assembled from Honolulu’s own published permit rules. Every line below is quoted from a city document and linked to it. Nothing here is generated, estimated, or inferred from another jurisdiction.
Do you need a permit?
Honolulu requires a permit for a retaining wall.
When a permit is not required
Retaining walls not more than 30 inches in height are exempt from the building permit requirement.
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Sources
- retaining wall — permit rules ↗verified August 2026
Other permits Honolulu publishes rules for
Listed because the city publishes a separate rule for each type — not because this project necessarily triggers one. Whether it does depends on your scope of work.
- Deck permit checklist
- Fence permit checklist
- Shed permit checklist
- Water heater permit checklist
- Re-roof permit checklist
- Electrical work permit checklist
- General building work permit checklist
BuildSpec is a reference, not the authority having jurisdiction. Confirm requirements with Honolulu before you build.