Once you determine the best location to keep the safe, secure it to the floor or wall. Most home safes come with all the fixings you need to mount the safe on the wall or bolt it to the floor.
If you plan to hide the safe within a wall cavity, you’ll have to cut into the plasterboard, saw off wall studs to create the right size cavity and construct a frame to support the safe. If you have a brick or masonry wall, get a pro to help you install the safe.