Re: Gun Safe in Garage?
There's nothing wrong with putting a safe in a garage. If you are just purchasing the home, you might want to think about pouring a concrete box for the safe to sit on top of before you move in.
The reason for the concrete is to A, bring the safe above the flood level (if there is one) and B, your concrete lag bolts can be a lot longer. You'll want to drill through the box that you poured and into the existing concrete floor.
Also, another possibility to consider is to somehow conceal the area where the safe will go. I just moved into a new house and constructed/reinforced a small room off of the garage. It now has a hidden entrance with a biometric (fingerprint) actuated magnetic locking system. The fingerprint pad is not even in the same room, so if somebody finds it, they'll have no idea what it is supposed to do. The most secure safe, is the one that nobody knows is there.
Also, if you construct a hidden or safe specific room, you can insulate it, reducing the temperature swing.