Plumbing Work Permit Requirements in Honolulu, HI
Consolidated city-county covering all of Oahu. Hawaii adopted 2018 IRC/IBC statewide. HNL Build system for online permits.
When you DON'T need a permit
Replacing a plumbing fixture (faucet, toilet) in the same location does not require a permit.
Source: Revised Ordinances of Honolulu (ROH) Chapter 16 / Hawaii State Building Code / 2018 IRC
When you DO need a permit
Adding a new plumbing fixture requires a plumbing permit.
Estimated fee: $75 – $250
Typical timeline: About 2 weeks
Source: Revised Ordinances of Honolulu (ROH) Chapter 16 / Hawaii State Building Code / 2018 IRC
Replacing a water heater requires a plumbing permit.
Estimated fee: $50 – $150
Typical timeline: About 1 week
Source: Revised Ordinances of Honolulu (ROH) Chapter 16 / Hawaii State Building Code / 2018 IRC
Re-piping a house requires a plumbing permit.
Estimated fee: $150 – $600
Typical timeline: About 2 weeks
Source: Revised Ordinances of Honolulu (ROH) Chapter 16 / Hawaii State Building Code / 2018 IRC
Adding a new plumbing fixture requires a plumbing permit.
Estimated fee: $75 – $250
Typical timeline: About 2 weeks
Source: Revised Ordinances of Honolulu (ROH) Chapter 16 / Hawaii State Building Code / 2018 IRC
Re-piping a house requires a plumbing permit.
Estimated fee: $150 – $600
Typical timeline: About 2 weeks
Source: Revised Ordinances of Honolulu (ROH) Chapter 16 / Hawaii State Building Code / 2018 IRC
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Frequently Asked Questions
Estimated permit fees for Plumbing Work projects in Honolulu, HI range from $75 – $250. Fees vary based on project scope and valuation.
It depends on the specifics of your project. Some smaller Plumbing Work projects may be exempt from permit requirements, while larger ones typically require a permit. Use our free lookup tool to check your specific situation.
Working without a required permit in Honolulu can result in fines, stop-work orders, being required to remove completed work, and complications when selling your home. It's always best to check first.
Typical approval time for Plumbing Work permits in Honolulu is About 2 weeks. More complex projects may take longer if plan review is required.
Learn More About Plumbing Work Permits
Read our complete guide covering permit requirements, costs, common exemptions, and the application process.
Read Plumbing Work Guide →