The Wall, the Hedge and the Key Safe: Finding a Spare-Key Spot That Doesn't Advertise Itself

A key safe looks like a simple answer. You fix a small metal box to the wall, set a code, and suddenly the cleaner, the carer or the plumber can let themselves in without you leaving a key under a plant pot. That is the theory, anyway.

In practice, an outdoor key safe is a bit like a spare door key with a sign attached. The box may be tough, but the message it sends is often louder than the lock: there is a key here, and somebody thinks this is a good place to keep it. So the useful question is not just “which key safe should I buy?” but “where should this thing actually live?”

First, work out whether you need one at all

Key safes make most sense where somebody needs regular, controlled access. A care worker who visits twice a day, a cleaner who comes weekly, a tradesperson who needs to get in while you are at work, or a family member who checks on the house when you are away. In those situations, a key safe can be more sensible than handing out permanent keys or leaving the back door unlocked.

If you only need a spare key for the odd emergency, a trusted neighbour or a keyholding friend may be the better answer. And if the real problem is that you keep forgetting your own keys, a key safe on the front wall is not a memory aid. It is a spare key in a box, and it needs the same care as any other key.

The spot that quietly says “look here”

The classic mistake is mounting the safe right beside the front door, at eye level, under the porch light. It is convenient, yes. It is also the first place anyone would look. A key safe next to the doorbell is not hidden in any meaningful sense. It is part of the doorstep display.

Equally, do not assume that “hidden” means “safe”. A box behind a loose fence panel, under a shrub or inside an old coal bunker is still a box, and burglars are quite familiar with the usual hiding places. The aim is not to create a treasure hunt. The aim is to put the safe somewhere that is out of public view, reasonably secure to fix, and practical for the person who actually has to use it in the rain at seven in the morning.

A side wall, a recessed porch return or a spot around the corner from the street can all work, provided the person using it feels safe and can operate it without being overlooked. Avoid placing it where it can be reached through the letterbox, where it blocks a vent, or where it is visible from the pavement. Also think about neighbours’ windows and passing sightlines. A key safe is not much use if the whole street can watch somebody open it.

What police-preferred placement usually means

There is no single law that tells you where a key safe must go. Police crime prevention advice and schemes such as Secured by Design generally favour the sensible basics: fix it securely, keep it out of public view, avoid obvious positions near the door, and do not rely on flimsy cover. Local police teams sometimes offer more specific guidance, so it is worth checking your force’s website if you want a second opinion.

The practical test is simple. Stand on the pavement and look at your house as a stranger would. Can you see the safe? Can you tell what it is? Is it lit up at night? Does it sit next to the door like a little invitation? If the answer is yes to any of those, move it or rethink it.

Combination hygiene matters more than the box

A strong key safe with a weak code is just an expensive hiding place. Avoid birthdays, house numbers, repeated digits and anything that can be guessed from your post or social media. Use a longer combination if the safe allows it, and change it when a temporary user no longer needs access. If your safe supports one-time or temporary codes, use them for tradespeople rather than handing out the permanent code.

Be careful how you share the code, too. A text message is convenient, but it sits in a phone forever. If you can, use a password manager or a secure note, and avoid putting the code in a group chat. It also helps to give the code in person or over the phone rather than writing it on a label inside the safe. And if the buttons are visibly worn around certain numbers, that is a clue. Mechanical key safes can show wear over time, so clean and maintain them, and consider changing the combination periodically.

Fixing it without wrecking the wall

A key safe is only as good as its fixing. On brick, use proper masonry anchors and make sure the safe sits flush. On render, old stone or timber cladding, take advice before drilling; what looks solid can crumble or split. Never mount a key safe on a plastic soil pipe, a loose fence post or a door frame that was never designed to carry weight. If you are in a flat or a communal building, remember that the wall may not be yours to drill into.

Weather matters as well. Water can get into the mechanism, dust can clog the dial, and frost can make stiff buttons stiffer. Check the safe after storms, keep the shutter or cover closed, and follow the manufacturer’s advice on lubrication. If the mechanism starts to feel vague or crunchy, deal with it before it fails with the key inside.

Insurance and landlord realities

Home insurance policies vary. Some insurers are relaxed about key safes, some specify an approved model or a particular standard, and some will ask questions if a key was left in an accessible place and there was no sign of forced entry. Check your policy before you drill, and tell your insurer if you are adding a key safe. It is a boring five-minute job that can save a much more boring phone call later.

If you rent, get permission in writing before fixing anything to the exterior wall. Your tenancy agreement may prohibit alterations, and communal areas often have their own rules. Listed buildings and conservation areas may also have restrictions. A key safe is small, but it is still a fixture, and landlords tend to notice holes.

When a key safe is the wrong answer

A key safe is not a substitute for a decent front-door lock, an alarm or a neighbour who keeps an eye on the place. It is also a poor choice if the house is often empty, if the location is overlooked by nobody at all, or if the only reason for buying one is that you keep losing your keys. In those cases, a locksmith can help you sort out the door itself, or you can look at managed access options that do not leave a key on the wall.

Used sensibly, an outdoor key safe is a useful piece of kit. Used carelessly, it is a small metal box that tells a stranger exactly where to start. Put it out of sight, fix it properly, keep the code clean and ask before you drill. That is most of the job done.