The Best Outdoor Key Lock Box Options for Homeowners and Real Estate Agents

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For some of the best outdoor key lock boxes available now, we’ve developed these reviews to guide you in the right direction if you’re looking for one of your own! 

Realtors have been using key lock boxes for a long time now. They provide a safe and effective method for keeping keys safe and in the hands of their intended handler. Oftentimes, they work using a one-way passcode that is entered into the lock box itself, which then allows for the key to be released, and then replaced after it’s used. The use of these however, isn’t just limited to realtors.

Homeowners can use them for personal use too, such as to let kids or guests in when they’re not around!

What is the Best Outdoor Key Lock Box You Can Buy? 

Don’t fret! We’ll sort through the hundreds of results to bring you some of the most highly-rated, and feature full models to choose from. Key lock boxes should always be able to stand up to some weather, stay in place where it belongs as well as remain intact against a would-be intruder or thief. We’ll review the following models of key lock boxes after diving into some things you should know about them ahead of time. 

What Kind of Key Lock Box Do I Need For Knobs, Handles or Levers? 

Most of it will depend solely on what you’re using it for, and what kind of front door handle you have. For spherical and ‘handle’-style front door handles, you’ll be just fine using the standard lock box for which they’re designed. 

The spherical handle creates a ‘wedge’ with the upper loop of the standard lock box, while the handle provides a fool-proof vertical handle from which to hang the lock box. In the rare instance that you may have a lever-style door handle, consider using a lock box lever clamp, which makes the standard lock box compatible with lever handles. (So that the box can not just be slid off of the handle).  

Different Lock Mechanisms for Key Lock Boxes 

The most common type of lock mechanisms you’ll encounter are either 4-(or more) digit suitcase-style locks, a button sequence, or numbered button passcode combination lock. Depending on what you’re planning on using it for, the most common type is the numbered button lock button, which will allow you to release the door on the front of the box after successfully entering the customizable passcode. 

Our reviews will stick to lock boxes with these standardized combination dials and buttons since they’re considered the most secure type of locks you can buy.

The Best Outdoor Key Lock Box Options for Homeowners and Real Estate Agents

Check out some of our reviews for the best outdoor key lock boxes below! 

Master Lock 5400D Lock Box 

Master Lock Key Lock Box, Outdoor Lock Box for House Keys, Key Safe with Combination Lock, 5 Key Capacity, 5400EC, Black

This lock box by Master Lock is one of the most highly rated units available, and it’s not hard to tell why. This is an incredibly sturdy lock box which is know for being incredibly weatherproof as well as one of the most durable. It’s a traditional shackle-style lock that fits easily onto both door knobs and handles. 

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A four-digit series of dials is what releases the lock mechanism, and is simple yet complex enough to be used effectively by everyone from kids to adults. This isn’t just a great outdoor lock box for realtors, but it is a really useful and more secure alternative to leaving the keys under a mat or a flower pot. 


  • Ideal for door-knobs, this model fist securley behind the handle
  • Tactile entry mechanism that makes you feel confident that you’re selecting the right number
  • Easy to remember 4-digit lock


  • Only reliable on door knobs
  • Space between lock bar and lockbox itself is relatively small, meaning that it won’t fit knobs that have a larger diameter in the back

Rudy Run Outdoor Lock Box Storage Safe

Key Lock Box for Outside - Rudy Run Wall Mount Lockbox for House Keys Outdoor - Combination Key Hiders to Hide a Key - Waterproof Key Safe Storage Lock Box

This small box packs a bunch of protection for your entry keys, and makes for a good alternative for those of us who can’t bear to leave the keys outside, but prefer not to use a door handle box. This is unusual in that it’s a lock box that doesn’t come with a shackle, nor can it be used with one. However, it has a few interesting features that makes it a really viable alternative. 

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This box is completely wall mountable, and can stand up to quite a lot of abuse. The Rudy Run is totally waterproof, rust-proof, heat resistant, and is able to withstand hammering, sawing and prying. This means it can sit out all year long and be used as a viable alternative to a traditional shackle box. 

Mount this box somewhere discreet, or right by the door if you prefer! Either way, it provides a safe method of key storage outdoors if you prefer not to use a handle lock box. 


  • Discrete, capable of being mounted almost anywhere
  • Completely waterproof design
  • Withstands prying, heat and hammering


  • Requires some DIY to get mounted properly to the exterior wall
  • Won’t mount to all outdoor surfaces without specialized tools
  • Lock mechanism door can be somewhat temperamental if the keys don’t fit flush in the box

Master Lock Box Electronic Wall Mount Key Safe

Master Lock Lock Box, Electronic Wall Mount Key Safe, Bluetooth iOS/Android App and Keypad Codes, 3-1/4 in. Wide, ‎5441EC

Another favorite for homeowners, Master Lock brings us this phenomenal electronic unit that will keep your keys safe for your kids, family members or friends to use when you’re away. In fact, there’s no need to remember lock combinations since you can use a smartphone app to unlock it yourself! 

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Don’t worry, there is also a keypad which can be used for backup access. The internal unit is actually large enough for not just keys, but access cards (such as a community pool pass) as well! This mounted box is perfect for homeowners who want a permanent outdoor lockbox to keep their keys and cards in. Up to 10 locks can be programmed to one phone app, meaning you can use them in other places around your property as well. 


  • Smartphone control available letting you remotely lock and unlock this box
  • Mountable anywhere on the exterior of the home
  • Large enough to hold access cards like pool passes, etc


  • Entering without a smartphone requires the touchscreen to work without fail
  • App won’t be supported on all smartphone models, only newer ones
  • More ideal as a backup access option and not a primary lockbox

Kingsly Guard-a-Key Black Relator’s Lockbox 

Kingsley Guard-a-Key Black Realtor's Lockbox Portable Resettable Hanging Key Safe Combination Lock Box for House Keys, Realtors, Vacation Rentals, Black (1 Pack)

The Kingsly lock is for those of us who prefer an all-metal construction, which some believe provides an added layer of safety to this lock box. It’s also considerably smaller than most boxes, which may be a positive or negative feature depending on what you’re using it for. 

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The interior itself will hold around 5 keys stacked next to each other in the rather interesting ‘slotted’ style this box has to it. The included 4-digit series of dials allows for 10,000 combinations you can use to set it with. With a simple combination, it’s incredibly useful for those with pet sitters, house cleaners and even contractors! 


  • Small profile that could go unnoticed by would-be thieves and wrongdoers
  • Holds up to 5 different keys
  • 10,000 possible combinations


  • Small loop diameter that will only fit around thinner handles
  • Holds 5 keys if they’re stacked perfectly neatly, without any rings or chains
  • Lock itself isn’t incredibly substantial and shouldn’t be relied upon if there is any concern of intentional tampering

Kidde AccessPoint Keysafe 

Kidde AccessPoint 001413 KeySafe Original Slimline Push Button Combination Permanent Key Lock Box, 2-Key, White

The access point unit by Kidde is the perfect example of a barebones, easy to use key say lock box that you can install on an exterior wall. Whether you’re a parent who’d like to leave an extra set of keys out for your kids, or a house cleaner, these push-button style cases make it simple enough for anyone to use, while keeping your set of keys secure!

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The button lock itself gives you the ability to use over 1,000 personalized combinations, so you can change it up as frequently as you’d like, even every week. Reviewers don’t love how exposed it is to the elements, particularly the button mechanism. That being said, Kidde does sell a cheap weather cover you can use for it as well. 


  • Installable on an exterior wall
  • Push-button design is tactile and less-likely to result in mis-typed entries
  • Thousands of possible passcode entries available that can be changed


  • Design doesn’t lend well to being left out in the elements, especially frost and ice which could clog the push-buttons
  • Pinch-buttons are uncomfortable to use for those with long nails

NU-SET Key Care Storage LockBox

NU-SET 2080-3 Key/Card Storage Push Button Combination Lockbox with Hanging Shackle, Black

This lockbox lets you store more than just a key! It’s also the perfect size for keycards, for those who live in condos, apartments or just prefer to have the ability to store something like a pool pass outside of their home safely. This is a standardized hanging shackle model that fits comfortably over a doorknob, or handle.

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While it isn’t compatible with lever-style handles, it still provides a safe alternative to leaving a key under a doormat, for instance. What’s unique about this model is that each pushbutton is labeled with both letters and numbers, kind of like an old-school flip phone. This way, you can set an incredibly high number of different passwords over its lifespan, or use something that’s easy enough for you to remember! 


  • Included instructions in the flip-down cover are useful for cleaners and maintenance people who may need to enter the property
  • Has the ability to swap the passcode at any time
  • Large loop for affixing it to numerous different types of handles


  • Not compatible with any kind of lever-style door handle
  • Large enough to be the target of blunt objects
  • Moisture can get trapped in the latch style cover


Sometimes you can’t mess with a classic, especially when it comes to a job as important as this one. Protecting your property while allowing for select people to be able to access it at any time can only come down to one of these lockboxes in our review. The Masterlock 5400D has you covered for its simplistic design and operation, as well as its overall tolerance for the elements.

Thanks for checking out this guide to finding the best outdoor key lock box! Hopefully it’s done something to help point you in the right direction. Have any bad experiences with a key lock box before, or something else you’d want others to know before purchasing their own? Let us know in the comments down below! 

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