During construction after the mechanical and electrical inspections, take photos of the interior walls and ceilings of your home from every room. This needs to be done before the insulation is installed. Label these so you know later what room, wall or ceiling it is. This will provide valuable maintenance information for professionals that may need to come into your home to repair or update anything from plumbing or electrical to structural problems. This can also be helpful with finding studs when hanging pictures or ceiling fixtures.