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Wilmington, DE Fire Regulations: Propane Storage (2026)

Significant Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Exempt cylinder size
under 125 water gallons
Above that
chief of fire approval required
Enforcing office
Division of Fire Prevention
Related permit fee
$100 tank installation (per fee schedule)

Summary

Wilmington bans propane and LP-gas storage citywide except for cylinders under 125 water-gallon capacity, or with fire marshal approval.

Propane or LPG shall be prohibited unless specifically approved by the chief of fire or fire marshal, except for cylinders of less than 125 water gallons capacity.

Source: DE State Fire MarshalView official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 72).

Full Breakdown

City Code § 12-92 flatly prohibits propane or LPG storage in Wilmington unless the chief of fire or fire marshal specifically approves it, carving out only cylinders under 125 water gallons capacity. That threshold covers ordinary household tanks like grill-size 20-lb cylinders and typical backyard tanks used for pool heaters or generators, but anything larger, including many bulk residential or commercial tanks, needs sign-off from the fire department before it can sit on the property.

Violations & Fines

Storing propane or LPG above the 125-water-gallon exemption without fire marshal approval violates § 12-92; the fire prevention division can also require a hazardous/flammable materials permit under § 12-99 and inspect the installation before approving it.

Frequently Asked Questions

Can I keep a propane tank at my Wilmington home?
Yes: cylinders under 125 water gallons capacity are exempt from the storage prohibition and don't need fire marshal sign-off.
What if my tank is larger than 125 water gallons?
City Code § 12-92 prohibits it unless the chief of fire or fire marshal specifically approves the installation.

Sources & Official References

Other rules in Wilmington

All Wilmington rules

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