There are many smart locks available in the market, each with different features and benefits. Depending on your needs and preferences, you may want to consider the following factors when choosing a Best Smart Locks for Apartment Buildings:

Lock style: You can find two types of deadbolt smart locks—a full replacement or an adapter for an existing deadbolt. Another category is doorknob replacements. Full replacements offer more security and functionality, but may require more installation and compatibility checks. Adapters are easier to install and use your existing keys, but may have less features and battery life. Doorknob replacements are suitable for doors with no deadbolt, but may not fit all door types.
Trigger options: Choose a smart lock based on how you want to unlock it: with a code, an app, a fingerprint, tap-to-unlock using a phone or fob, or geofencing (which uses your phone’s location). Some smart locks offer multiple options, while others are more limited. Think about the convenience and security of each option, as well as the number of users and guests you expect to have.
Installation: If you can use a screwdriver and a smartphone app, installing a smart deadbolt takes 5 to 15 minutes, plus 10 to configure its settings. However, some smart locks may require additional tools, drilling, or wiring. Make sure you check the installation instructions and compatibility of the smart lock with your door before buying it.
Smart integration: Every smart lock has a companion app, but some also work with Amazon Alexa, Google Home, Apple Home, or other smart home systems. This allows you to control your smart lock and other devices in a single app, as well as create routines and automations. For example, you can set your smart lock to automatically lock when you leave home, or unlock when you arrive. You can also use voice commands to lock or unlock your door.
Based on these factors, some of the best smart locks for buildings in 2024 are:

Yale Assure Lock 2: This is a full-replacement smart lock that works with Bluetooth, Wi-Fi, and Z-Wave. It has a touchscreen keypad, a built-in alarm, and a door status sensor. It also works with Amazon Alexa, Google Home, Apple Home, and Samsung SmartThings. It is rated as the best overall smart lock by U.S. News.
August Wi-Fi Smart Lock: This is an adapter smart lock that works with Wi-Fi and Bluetooth. It has a sleek design, a door status sensor, and a geofencing feature. It also works with Amazon Alexa, Google Home, Apple Home, and many other smart home systems. It is rated as the best for renters and apartment dwellers by U.S. News.
Schlage Encode Plus: This is a full-replacement smart lock that works with Wi-Fi and Bluetooth. It has a touchscreen keypad, a built-in alarm, and a tap-to-unlock feature that works with Apple Watch and iPhone. It also works with Amazon Alexa and Google Home. It is rated as the best for Apple Watch owners by Tom’s Guide.
Wyze Lock: This is an adapter smart lock that works with Wi-Fi and Bluetooth. It has a simple installation, a door status sensor, and a geofencing feature. It also works with Amazon Alexa and Google Home. It is rated as the best budget smart lock by U.S. News and Wirecutter.