18. Reinvigorate Interior Doors, Too
Don’t forget to repair those creaky, non-lockable interior doors while you’re at it. You know, the ones that are warped from the heat or cold, sticking and swelling in their frames? They’re not directly exposed to the elements, so you’re more likely to be able to repair worn-out interior doors rather than replace them altogether.
Average Cost: About $220 to repair each door.*