I am lucky enough to be building a house right now and have designed it so the entire front porch 8'x20' has a safe room below it. Access to that room is from the basement and is hidden. It has an industrial steel door with multiple locks. Inside that room I have various safes and steel lockers for firearms and other goodies. also a lot of room for emergency supplies, food, medical, etc...
Can you build a porch or similar on your house??