What is inspected
Looking for water staining
The inspector will look for water leaks, or evidence of water leaks. He will check all the
areas where water leaks generally occur. Inspectors know exactly where to look for this kind of thing -- on floors, along the foundation, in basements, etc. Leaking water can be a sign of two problems. First, it can suggest that the pipes need repair or replacement. Additionally, the water itself can cause damage and erosion to floors, ceilings and foundations.
This is just a bare minimum.
The inspector will probably look at some additional areas, above and beyond the items on this list. When he's done checking these things, he will give you what's known as the home inspector's report. He will sit down with you and go over each item on the list, noting any problems he found along he way. He will explain what the problem was, and what might be required to fix it. The potential repairs are obviously important to you, because they bring additional costs along with them.