Propane Storage: Mililani Town vs Urban Honolulu
How do propane storage rules compare between Mililani Town, HI and Urban Honolulu, HI?
Mililani Town has fewer restrictions than Urban Honolulu.
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 →Urban Honolulu, HI
Honolulu County
Urban Honolulu propane installations are regulated by ROH Chapter 20, which adopts NFPA 1 Chapter 69 and NFPA 58, triggering plan review at 125-gallon water capacity and vehicle barrier requirements.
View full Urban Honolulu rules →Key Facts Comparison
| Fact | Mililani Town | Urban Honolulu |
|---|---|---|
| - | - | |
| Code | - | ROH Ch. 20 / NFPA 1 Ch. 69 |
| National standard | - | NFPA 58 LP-Gas |
| Plan review at | - | 125 gal water capacity |
| Barrier trigger | - | Within 10 ft of roadway |
| Permit office | - | HFD Fire Prevention |
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.
Urban Honolulu FAQ
Do Urban Honolulu restaurants need permits for rooftop propane tanks?
Yes. Fixed commercial propane installations require HFD permits and plan review under NFPA 1 Chapter 69, plus compliance with NFPA 58 on setbacks, rooftop access, and relief valve orientation.
Are bollards required for curbside tanks at a Urban Honolulu business?
Yes, when a tank sits within 10 feet of a public vehicular way. Steel-filled bollards or comparable impact barriers approved by HFD must protect the container from vehicle strikes.
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