Residential propane storage issues are more complex than those for flammable and combustible liquids.
Permanent Storage System
If you want a permanent liquefied petroleum gases (LP-gas) system and tank installed in heavily populated areas, you must obtain a permit and comply with relevant installation codes. In addition, you will need to hire a state licensed contractor to perform the work and supply the equipment and product.
- For portable Department of Transportation (DOT) Tank storage in an unattached garage or shed, you are allowed up to 300 lbs. total capacity. You may have either of the following:
- Up to fifteen, 5-gallon (20-pound) portable appliance cylinder sized usually found on barbecue grills (DOT 4BA240)
- Three 23-gallon (100-pound) cylinder (DOT 4BW240)
- Or a combination of both not to exceed 300 lbs.
- If you want to store propane and flammable/combustible liquids together, they should be separated by at least 10 feet.
- You are only allowed to store two of the small portable (1-pound.) disposable propane cylinders inside your home or attached garage. (National Fire Prevention Association 58).
Propane cylinders attached to heating and/or cooking appliances, as well as those mounted on trailers, motor homes, and campers do not count towards your total storage capacity.