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9. Inside the Attic Under Insulation

A construction worker wearing a yellow hard hat and protective glasses uses a hammer to secure insulation material in place. The unfinished attic space suggests ongoing renovation or building work.
Credit: Shutterstock

While attics aren’t climate-controlled or comfortable, they’re excellent for hiding safes. Criminals rarely climb into hot, dark, dusty crawlspaces. You can install a small fireproof safe under insulation or behind a support beam. If your attic has a storage nook or floorboards, even better—cut into a corner or lay the safe flat and cover it with clutter. Use weatherproof materials and be mindful of moisture or rodent issues. This isn’t the best location for daily-use items, but for things you rarely need, it’s practically invisible.