Mililani Town vs Waipahu
How do propane storage rules compare between Mililani Town, HI and Waipahu, HI?
Mililani Town and Waipahu have similar restriction levels.
Mililani Town, HI
Honolulu County
Propane installations in Mililani Town follow ROH Chapter 20's adoption of NFPA 1 Ch. 69 and NFPA 58. HFD permits are required, and tanks or aggregated capacity of 125 gallons water capacity or more need plan review.
View full Mililani Town rules →Waipahu, HI
Honolulu County
Waipahu homes, restaurants, and light industrial sites using propane must follow Honolulu's Fire Code LP-Gas rules, with plan review for larger storage installations.
View full Waipahu rules →Key Facts Comparison
| Fact | Mililani Town | Waipahu |
|---|---|---|
| - | - | |
| Plan Review Threshold | - | 125+ gallon capacity |
| Standard | - | NFPA 58 / NFPA 1 Ch. 69 |
| Barrier Rule | - | Within 10 ft of road |
| Permit | - | Per NFPA 1 Sec. 69.1.2 |
| Code Chapter | - | ROH Ch. 20 |
Highlighted rows indicate differences between cities.
Mililani Town FAQ
Can I install a permanent propane tank in a Mililani townhome?
Possibly, with HFD permit and HOA approval. Many Mililani HOAs restrict visible tanks; screening and location rules usually apply.
Is exchanging grill cylinders regulated?
Routine cylinder swaps generally do not require a separate permit, but new piping and fixed installations do.
Waipahu FAQ
Does a Waipahu restaurant's bulk propane tank need plan review?
Yes. Aggregate LP-Gas installations of 125 gallons water capacity or more require plan submittal to HFD and must satisfy NFPA 58 installation standards.
Is a small cylinder at home subject to plan review?
No. Typical 20-pound BBQ cylinders do not trigger plan review but must be stored upright, outdoors, away from ignition sources per NFPA 58.
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