Propane Storage: Honolulu vs Mililani Town
How do propane storage rules compare between Honolulu, HI and Mililani Town, HI?
Honolulu and Mililani Town have similar restriction levels.
Honolulu, HI
Honolulu County
Honolulu adopts the International Fire Code through ROH Chapter 11, capping residential propane container size and requiring placement that respects setbacks from buildings, ignition sources, and property lines, with HFD inspecting larger installations.
View full Honolulu rules →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 →Key Facts Comparison
| Fact | Honolulu | Mililani Town |
|---|---|---|
| Portable cylinder cap | Generally 20 pounds | - |
| Permit threshold tank | Above 125 gallons | - |
| Setback distance | 10 feet typical | - |
| Inspecting body | Honolulu Fire Department | - |
| - | - |
Highlighted rows indicate differences between cities.
Honolulu FAQ
How many propane tanks can I store?
Most homes may keep two 20-pound grill cylinders outdoors with proper spacing. Quantities approaching aggregate IFC limits or any installed tank over 125 gallons triggers HFD permit review.
Can I store propane in my garage?
Indoor storage of LP-gas cylinders is generally prohibited under the IFC. Keep cylinders outdoors, upright, shaded, away from drains, and at least 10 feet from ignition sources.
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.
Compare other topics
See how Honolulu and Mililani Town compare on other ordinance categories.
Want to add a third city?
Use our full comparison tool to compare up to three cities.
Open Comparison Tool