We don’t always get to pick our rental roommates, and that can lead to unpleasant circumstances like roommates interested in “borrowing” or others with flimsy definitions of ownership. While I can’t protect your last beer in the fridge, I do know a thing or two about security devices, having tested dozens for CNET. So I have ideas for securing your belongings if you’re worried about roomie-related theft.

Some renters can install wireless home security equipment that doesn’t cause installation damage and is easy to take with you if you move. Our list of the best home security systems for renters includes DIY units that don’t require drilling or installation experience to set up. But if you’re renting a single room in a house with other spaces as common areas, setting up a whole security system may not be possible — especially if your roommates don’t like the idea.

That doesn’t mean you can’t protect your stuff, especially when it’s in your room. There’s still plenty of home security tech to keep watch or prevent access to your valuables, even if your personal space is one bedroom. 

These are the essential home security devices and expert tips to keep your stuff safe from roommates with sticky fingers.

First, read up on your lease (if you have one)

Businessman working analysis business information.

Review any info you have about your living situation.

Getty Images/iStockphoto

Before adopting new security tech, it’s a good idea to break out the lease you signed and check the details. Leases sometimes specify certain limitations for tenants. Look for text or sections like:

  • Security and who is in charge of managing security. Some leases may even mention smart home tech or door locks.
  • Tenant alterations, and what specific alterations a tenant is not allowed to make. Some owners like to limit what technology or equipment renters can add.
  • Communication channels to an owner or landlord to talk about theft and ask for exceptions to the rules if you have a serious problem.
  • Repair and maintenance sections may specify who is in charge of certain kinds of home hardware or security.

Of course, not everyone has an in-writing lease. There are more casual subleasing arrangements with primary renters or similar living situations where they may not know what rules apply to them. In cases like this, it’s time for a little open communication. 

Talk with your roommates, especially the primary renter if there is one, and let them know that you’re considering using home security devices. Get consensus whenever possible: If you have a casual written agreement, you may want to add a line that lets you use home security technology.

Add a smart lock for your bedroom door

The Honeywell electric knob on a door leading into a kitchen.

Some smart locks work on any door in the home and are easy to set up.

Honeywell/Lowes

Adding a smart lock is probably the best way to protect belongings and defend against snooping or thieving roommates. But if you’re looking for smart locks for your room, you’ve probably noticed a couple of problems: They tend to be deadbolt locks, and the installation looks too invasive or potentially damaging to the door.

We’ve got good news. Not all smart locks are deadbolts, and replacing an ordinary knob or lever-style handle is usually possible without causing permanent marks (as long as you’ve got a screwdriver handy). Consider this Yamiry fingerprint-detecting, keypad smart handle, which is currently available for $80 and offers all the benefits of traditional smart locks in a package that you can install on nearly any door. This Honeywell knob for around $85 is a simpler design with a keypad entry that may be a better fit on some indoor door models.

But there’s a reason I warned you to look at your lease first. Sometimes owners have specific rules about replacing locks, so always check the details before installing a lock like this. And keep the old hardware around, in case you want to move out and take the smart lock with you when you go.

Use a smart safe for valuables

An Aegis safe sits on a wooden cabinet with a stack of papers and potted cactus on top.

A bedroom safe doesn’t have to be large to get the job done.

Aegis/Amazon

A home safe brings to mind bulky, heavy chunks of metal that aren’t designed for small spaces. But not all safes are built that way. Consider this compact Aegis safe ($100) with 1.2 cubic feet of space. That’s plenty of room to hold jewelry, cash, personal documents, checkbooks and IDs, but it’s small enough to easily take with you no matter what room you live in. It has a no-key knob and the ability to recharge the battery via a USB-C connection to a nearby laptop or charger. It’s also available in fingerprint lock varieties for a price bump.

Or, if you’re looking for a budget option, this small Yuanshikj keypad safe is available for around $30 — the lowest we’ve seen a mini home safe like this.

Set up a security camera in your personal space

The Blink Mini sitting on a table without its stand next to a small Echo Show showing a camera view.