HCC §25-4-21

Rules for building basements and underground floors

Read the official text at hawaiicounty.gov ↗

This section allows basements and underground floors in all zoning districts. It does not limit how many floors can be built below ground. There are no other rules or requirements stated here.

everyone

The ordinance, as written (Hawaiʻi County) — Basements and underground structures

A copy, taken August 21, 2026. The version published by Hawaiʻi County is the one that governs, and it may have changed since. Check it before relying on anything here.

In all districts, any number of floors below ground may be permitted. (1996, ord 96-160, sec 2; ratified April 6, 1999.)25-4-21 Intentionally left blank. 25-57.6 SUPP. 19 (1-2026)

Read the official text at hawaiicounty.gov ↗as published Jul 16, 2026our copy taken Aug 21, 2026

Published by the County of Hawaiʻi Office of the County Clerk.

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