Home » Home Security Tips » How to Hide a Key (And Keep Home Invaders in the Dark)

How to Hide a Key (And Keep Home Invaders in the Dark)

We’ve all been there: you step outside for thirty seconds to take out the trash, and suddenly the wind slams your front door shut. You don’t have a key.

It’s in situations like this where you might want to hide a key outside, perhaps under the doormat. This, of course, would be unwise.

To successfully hide a key takes a little thinking outside the box. Burglars and home invaders know every trick in the book—and the very first chapter of that book is ‘under the doormat’.

Find out all you need to know about where to hide a key outside while minimizing the risks posed to home security by keeping your hidden key safe, so that the next time the wind decides to shut you out, you aren’t stranded on the porch.

Places You Should Not Hide a Key

So, you want to hide a key but you’re afraid of intruders discovering it. The most important thing when considering how to hide a key, then, is actually how not to hide it. Let’s discover the unsafe spaces to avoid.


According to Eagle Operators, the mailbox is a highly suspect place to hide a key, and by far most dangerous. Despite it being one of the least safe options, it remains one of the most popular. 

Shockingly, statistics have shown that keys in the mailbox could be responsible for up to 34% of home invasions. That’s over a third of all home invasions. Needless to say, immediately rethink using your mailbox as spare key storage!

Credit: Kipkay

Under the doormat

The ancient hidden key doormat routine is another grievous error many homeowners should avoid. The first place a home invader will look for your spare key is under the doormat, or in that rather inconspicuous upside-down flower pot. Yes, gnomes are also a firm ‘no’ when it comes to finding things to hide keys in outside.

Hiding a key under the patio may not be as common as hiding it under the front doormat or in a disused flower pot, but it is still fairly unsafe, since it’s a relatively obvious place which is easy to access. 

In fact, the tendency to utilize ‘easy access’ hiding spots likely increases the chances of the key being found.

Where Should You Hide a Key? Essential Key Hiding Ideas

With that in mind, the question is, where should I hide my key?

Limiting how accessible the key is, even to yourself, will help keep your property safe and the key hidden. Check out these nifty key hiding ideas.

Hidden Key Safe 

a keysafe made by master lock
Image via Amazon

How does it work?

Key safes are wall mounted. The more inexpensive options are made of a hard plastic, and feature a four number code lock. You can only open the box and retrieve the key with the correct code.

Why we recommend it

Though it might be a little inconvenient for you, the fact that key safes are usually wall mounted means you could place it as high up a wall as you like. The likelihood of a burglar bothering to reach it is then rather low, since it is noisy and attracts attention.

They are also very small devices, making them much more subtle than a regular locked safe and significantly more conspicuous than a doormat. 


How does it work?

If your property has any tall trees, place the birdhouse inside the tree, or otherwise nail it high up on the trunk. You could also place it on a shed, or by a standalone birdhouse with a pole. Rather than placing feed inside, place your key in the hole and insert either a cloth, a piece of card, or some other material to cover it up.

Why we recommend it

Even if it occurs to a burglar to check, it’s unlikely they will if it isn’t easy to reach. Generating noise and attention is exactly what a burglar wants to avoid, after all. That’s why it’s best to opt for a conventional birdhouse that requires nailing to a surface, rather than one on a pole.

Just make sure you also have a means of reaching the birdhouse, whether that’s an old ladder hidden round the back of the property or a childhood spent climbing trees! 

In Soil

While turning a disused plant pot upside down with your key beneath it is just begging to be picked up by a burglar, burying your key in the soil of an actual plant or plant bed might be a pretty ingenious (albeit messy) way to conceal a key in plain sight.

How does it work?

If the front garden has a plant bed with soil, try seeing just how far down the soil goes. If it is a deep bed of several inches, you could push the key through it. Likewise, any deep potted plants you have in the yard could be used in a similar way. For the sake of hygiene (and avoiding a rusted key), you could put the key in a small box before inserting it into the soil. This should also help reduce the chance of losing it.

Why we recommend it

Occasionally, hiding a key in plain sight can be virtually impossible to spot, as is the case here. So long as the key is pushed deep enough into the soil, it won’t be at all visible to anyone passing by.

Hence, you must first make sure the bed is at least double the length of the key itself. You should also attempt to insert the key horizontally so it can lay flat far beneath the surface. This will make it less likely to poke out following bad weather.

The main risk with this approach is that you could lose the key if you aren’t aware of exactly where you’re putting it. Still, if it’s too close to the surface, just a little wind and rain could expose it, putting your security at risk. 

Hide-A-Key Objects

a hide-a-key rock
hide-a-key rock

How does it work?

The best hide a keys will be made from a durable type of plastic. These objects are weather-proof, so you can use them all year round. The small ones can comfortably keep keys that are no longer than 2.9 inches in length and 1 inch in width, so don’t attach keyrings.

Why we recommend it

hide a key in a fake faucet
hide a key in a fake faucet

After all, its success depends on  how well it fits in with your surroundings. If the fake rock you choose is a completely different color to the rocks you have elsewhere in your front yard, it’ll be a dead giveaway that there’s something inside it. Likewise, having the object somewhere ‘deep’ within the outside of the property (like up a tree or in the back garden) is best if space permits it.

Keep Your Hidden Keys Safe with Security Cameras


How do I identify the area to put a key-hiding device?

The best place to put a hide-a-key device is in an area that allows it to mimic a natural setting. For instance, you should place the hide-a-key rock amongst other rocks outside of your home. Only choose an item that looks realistic in context. If a garden gnome sticks out like a sore thumb against your ultra-modern front door, don’t use it.

Does it make sense to use multiple key-hiding devices?

Where do burglars look for keys?

Common places that burglars look for keys include mailboxes, doormats, and flower pots. Also avoid putting your key under your patio furniture or under the garbage bin. As a rule of thumb, avoid places that are close to the ground – the higher up the key is positioned, the more likely the home invader will be deterred, even if it seems fairly obvious to them where it is. Attracting attention is never going to be the aim of a burglar, so if a spare key requires five years of elite gymnastics to even attempt to reach it, they probably won’t bother.


There are clearly quite a few options when it comes to making decisions on how to hide a key outside your home. That’s why it’s best if everyone living in the property is well aware of where the key will be, as this will help prevent confusion and ultimately reduce the risks associated with it.

We also suggest you compliment your key-hiders with other security features. Surveillance cameras, like AlfredCamera, and alarms can act as additional deterrences and allow you to improve your home’s security.

Hiding a spare key is never going to be a failsafe, 100% secure endeavor, no matter how ingenious a technique you decide upon. If you can avoid it altogether, do so.

That being said, there are several smart ways you can make your home more secure, especially when you travel out of town, and mounting security gadgets can greatly reduce the risks associated with hiding spare keys.