Affordable storage unit locks: 3 to avoid & 3 to buy

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The most important thing you want for your storage unit: a strong, dependable lock. Moishe’s has the other things you need: 24/7 security, cameras, guards, access gates, and fences. Moishe’s Self-Storage facilities have many lines of defense set up to protect your belongings, but it’s important to get the best lock you can afford.

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Select a self-storage lock that will ensure your possessions will be safeguarded against potential thieves who make it into the facility (which is unlikely).

Most important things to remember when choosing a self-storage unit lock:

  • Large secure, or hidden, metal lock ring
  • Accessibly by key (not a combination)
  • Anti-drill plate
  • A good warranty

Which storage unit locks should you avoid at all costs?

1. Traditional Padlocks

These keyed padlocks use a pin-tumbler mechanism inside a cylinder to turn with a key, that’s a description of the mechanism, not the same thing as the built-in cylinder locks described in entry 3 below, which are a different, facility-installed option. Traditional padlocks may be what most people picture when they think “lock.” They are simple to use and only require a key, which makes them attractive to many users. They can, however, be easily picked by burglars and can also be re-keyed without removing or breaking the lock. You can also get “bump keys” easily enough, there’s also a lot of space for a bolt cutter to squeeze in and cut the lock. Unless you get an expensive version, most of these padlocks don’t have an anti-drill plate. (We don’t recommend this option for a storage unit.)

2. Keyless padlocks

Combination padlock storage unit

Eliminating the use of keys, these locks can be opened with a number combination preset by the manufacturer or set by the user. These locks are great for those who tend to misplace or lose keys and for those who want to give unit access to others.

The disadvantages of these locks, however, include forgetting the combination or having others guess the code. One quick search online turns up plenty of tutorials on cracking common combination padlocks. Also, they can be easily cut with tools like bolt cutters. (We don’t recommend this option for a storage unit.)

3. Cylinder locks

Disassembled cylinder lock

 

You’ll need special permission from the storage company to install one of these locks. Sometimes, however, the facility offers these as an option for your unit. Bolt cutters will not be useful against this type of lock. A thief could try to pick this lock, or simply attempt to destroy it by force. (We don’t recommend relying on this alone for a storage unit.)

Which storage unit locks should you buy?

1. Shrouded Locks

Shrouded padlock for storage units

These may very well be considered the best locks on the market. The “shroud” or “shackle cover” hides most of the lock ring, so there is no place for a traditional bolt cutter to latch on, therefore it can’t be cut. This one uses a key, not a combination, for access. This one also has an anti-drill plate, which prevents a drill from biting into the metal of the lock, it will only catch on the plate and spin there, unable to break through it to the lock itself. The plates are made of a metal that is usually stronger than typical drill bits. (This is our highest recommendation for a storage unit lock.)

2. Hidden padlock

Hidden padlock for storage unit

These locks have a hard outer metal coating that protects from drills. The hidden metal latch is behind the outside steel coating, so bolt cutters cannot access it. This particular type uses a key, which we highly recommend. This is a go-to when searching for a storage unit lock.

3. Disc Locks

Disc lock for storage unit

These lock types were specifically designed for storage units and are the ones that are first in your search list when you type “storage unit locks.” A burglar can’t remove these with a bolt cutter because the “U” part of the lock can’t be easily reached. Hammers cannot break open the lock either. For a thief to get through disc locks, they would have to invest quite a bit of time and resources, which means they will likely move on to a unit with a less secure lock. Both a key or a combination are good options, but we recommend the key option. A 2¾” or 3″ disc lock fits most storage unit hasps, and a solid one typically runs $25 to $35.

What should you do if your storage unit items are stolen?

Before stowing your possessions, photograph each item individually and make a list of all the objects (and serial numbers if possible). This way you can recover the items if lost or stolen. Consider purchasing insurance before you stow if your items are very valuable to you. Many insurance companies offer insurance (like renters) that covers your possessions in a unit if they break, are lost, are damaged, or stolen.

What shouldn’t you store in your storage unit?

Make sure you aren’t storing anything that the storage facility doesn’t condone. If you store chemicals or flammables, which are against most storage contracts, this could void your rental agreement and could render you liable if they were to cause a fire. Look over the insurance policy carefully to see what’s covered.

Frequently Asked Questions

What’s the best lock for a storage unit?

A disc lock or a shrouded/hidden-shackle padlock. Both hide the shackle so a bolt cutter has nothing to grab, which is the most common way storage units get broken into. A 2¾” or 3″ disc lock fits most hasps.

Is a disc lock the same as a cylinder lock?

No. A disc lock is a portable padlock you buy and bring yourself. A cylinder lock, as described above, is typically built into the unit door by the facility and requires their permission to use, it isn’t something you shop for and install on your own.

Do storage units come with a lock, or do I need my own?

Most self-storage facilities expect you to provide your own lock; a bare unit typically comes with an empty hasp. Some facilities offer a built-in cylinder lock as an option, but don’t assume it’s available. Confirm with your facility before move-in day.

Can I use any lock I want on a storage unit?

Usually yes, as long as it fits the hasp, though some facilities restrict lock types for liability or overlock reasons. Check your rental agreement or ask staff if you’re unsure.

What size disc lock do I need for a storage unit?

A 2¾” or 3″ disc lock fits the hasp on nearly all standard storage units. Measure your unit’s hasp opening if you’re buying online rather than in person, since sizing can vary slightly by manufacturer.


Contact Moishe’s Self Storage if you’re looking for cheap full-service self-storage units in New York City to hold wine, art, furniture, luggage, household items, or other things.

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