Decide what items that you plan to store in the safe. This is your first step as you will need to narrow down the options based on the size that you need. There are options for both small and very large wall safes.
Determine the space that you have available for a wall safe, which will also determine the size of your wall safe. Because it's built into a wall, you must have a wall and room that can house it.
Evaluate the space that you have allotted for the wall safe. As wall safes come in a variety of depths, the wall and space must accommodate the wall safe that you choose. A wall that backs up to an attic or is in a garage is ideal.
Decide whether you would prefer a wall safe with an electronic lock, a key lock, a combination and key lock combined or a fingerprint lock. If more than one person accesses the safe, electronic and fingerprint locks work best.