12. Have you passed the National Home Inspector's Exam?
The NHIE® is the original competency exam for the profession and is still one of the only ones that is psycho-metrically valid. It shows a home inspector’s skill and knowledge in the field.

10.  Are you licensed to perform home inspections?

This is very important as many states do not require a professional license and anyone can simply claim to be an inspector with no background training or related experience. Seek out an inspector that is licensed even if your state does not require a license.

9. What items do you check during the inspection?- Be sure to get a list of items that are routinely checked during the home inspection. Most professional home inspector's follow a standard of practice which outlines the things that will and will not be inspected. Ask to see a copy of the inspector's (SOP) Standard of Practice before the inspection.

Buying a home? The process can be stressful.  A home inspection is supposed to give you peace of mind, but often has the opposite effect.  You will be asked to absorb a lot of information in a short time.  This often includes a written report, a checklist, photographs, environmental reports, and what the inspector himself says during the inspection.  All this, combined with the seller's disclosure and what you notice yourself, makes the experience even more overwhelming.  What should you do?
 
Relax.  Most of your inspection will be maintenance recommendations, life expectancies for various systems and components, and minor imperfections. These are useful to know about.  However, the issues that really matter will fall into four categories:

1. major defects.  An example of this would be a structural failure;
2. things that lead to major defects, such as a small roof-flashing leak, for example;
3. things that may hinder your ability to finance, legally occupy, or insure the home; and
4. safety hazards, such as an exposed, live buss bar at the electrical panel.

Anything in these categories should be addressed.  Often, a serious problem can be corrected inexpensively to protect both life and property (especially in categories 2 and 4).
 
Most sellers are honest and are often surprised to learn of defects uncovered during an inspection.  Realize that sellers are under no obligation to repair everything mentioned in the report.  No home is perfect.  Keep things in perspective.  Do not kill your deal over things that do not matter.  It is inappropriate to demand that a seller address deferred maintenance, conditions already listed on the seller's disclosure, or nit-picky items.
 

5. How long will the inspection take?
The average on-site inspection time for a single inspector is two to three hours for a typical single-family house; anything significantly less may not be enough time to perform a thorough inspection.