Propane Tank Setback Calculator — NFPA 58 Minimum Distances

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Setback Distance Calculator — NFPA 58

Tank Size (gallons)

Installation Type

In a FEMA Flood Zone?

HOA or Deed Restrictions?

ℹ️ How to Use This Calculator

These results show NFPA 58 minimum distances — the national floor. Your local AHJ may require greater setbacks. Always verify with your county building department or fire marshal before finalizing tank placement. Measure all distances from the tank's outer shell to the nearest point of each feature.

Quick Reference — All Tank Sizes

Tank Size	Type	Buildings	Windows/Doors	Property Line	Ignition Sources
Up to 500 gal	Above-Ground	10 ft	10 ft	10 ft	10 ft
Up to 500 gal	Underground	10 ft	10 ft	10 ft	10 ft
501–2,000 gal	Above-Ground	25 ft	25 ft	25 ft	25 ft
501–2,000 gal	Underground	25 ft	25 ft	25 ft	25 ft
2,001+ gal	Either	50 ft	50 ft	50 ft	50 ft

Source: NFPA 58 Tables 6.3.1 and 6.7.2.3. Local AHJ may require greater distances.

What Counts as an Ignition Source?

Many homeowners miss this. An ignition source is any device that could ignite LP gas vapor. Requires the same setback as building openings:

Electric meters and electrical panels on exterior walls
Outdoor AC condenser units
Standby generators
Dryer exhaust vents
Pool/spa heater and pump equipment
Permanently installed outdoor grills or cooking equipment

After You Calculate — Next Steps

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Full Setback Guide

Detailed explanation of every setback requirement and how inspectors measure them.

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Permit Basics

Do you need a permit? How to apply, what it costs, and what to expect.

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Permit Checklist PDF

Print and bring to your county building department.