10 Best Key Lock Boxes 2025 in the United States

The Master Lock Key Lock Box (model 5400EC) is a robust and versatile option for securely storing up to five standard house keys. Made of durable metal, it features a four-digit combination lock that you can reset with thousands of possible codes for personalized security. Ideal for both indoor and outdoor use, the lock box is coated with vinyl to prevent scratches and includes a shutter door to protect the combination dials from weather elements.

The shackle is designed to fit most door knob styles, making it highly adaptable. Measuring 6.25 x 3.25 x 1.5 inches, it is relatively portable and can be conveniently mounted on a door or other surfaces. It should be noted that while the box is weather-resistant, it may not be fully waterproof, so placement in very wet conditions could be a concern.

The capacity, while adequate for most, is limited to five standard keys, which might not be enough for some users with larger key sets. Despite these minor drawbacks, the combination of durability, ease of use, and security makes it a solid choice for anyone in need of a reliable key storage solution, especially for outdoor use or real estate purposes.

The Puroma Key Lock Box is a versatile and secure option for storing your keys. Made from high-quality aluminum alloy and steel, it is designed to resist rust, cutting, and prying, making it highly durable and secure. It features two installation methods: a removable shackle for hanging on a doorknob and a wall-mount option using screws and expansion plugs. This flexibility makes it suitable for various settings, including homes, offices, and rental properties.

With a pre-set combination code of 0-0-0-0, users can easily reset to a custom 4-digit code, offering 10,000 possible combinations for enhanced security. The large capacity allows for storing multiple keys, making it convenient for emergency access or sharing keys with others, such as Airbnb guests or pet sitters. Additionally, its weatherproof design ensures it can withstand outdoor conditions.

However, at 1.54 inches deep, some users may find it slightly bulky for certain locations, and while the combination lock is handy, it may not suit those preferring a key-based system. Ideal for those needing a reliable and adaptable key storage solution.

The SentrySafe Black Fireproof Document Box is a solid choice for those looking to protect important documents and valuables from fire. Made from durable alloy steel, it ensures that your items are safeguarded, and its fireproof feature is UL Classified to endure 30 minutes at 1550°F, making it particularly suitable for home or office use. The box also includes an ETL verification for protecting digital media such as CDs, DVDs, and USBs, which adds a layer of versatility to its use case.

The key lock mechanism is straightforward and helps keep your documents secure, with two keys included for backup. The box offers a 0.61 cubic feet capacity and fits letter-size hanging files, making it convenient for organizing various documents like passports, social security cards, and birth certificates. However, at 28 pounds, it is relatively heavy, which might limit its portability despite being floor-mounted.

It measures 15.3 inches wide, 12.1 inches deep, and 13.6 inches high, so it offers ample space without being too bulky. One notable drawback is that it lacks water resistance, which means it won't protect your documents in case of flooding or water damage. Additionally, the black color and basic design might not appeal to those looking for a more stylish or visually appealing option.