Simple Window Locks
The latches on most double hung windows are no match for a burglar with a pry bar. Pin locks are an easy solution. To install one, all you have to do is drill a hole. If you want to lock the window in a partially opened position, drill a second hole. Pin locks cost about $5 at home centers and online. They work well on sliding patio doors too.
Plus, check out these other 13 inexpensive ways to theft-proof your home. These tips will make your home more burglar resistant without spending a fortune.