Short Answer
Because I'm more qualified and I take the time to do the job right. Simply put, I'll give you the best home inspection available.
Long Answer
All home inspectors are not created equal. Not even close. Most are run-of-the-mill. Some are frightfully under-qualified. A few are outstanding. You want one of the very best.
Your home is likely the biggest investment you'll ever make. Take some time to make sure that you hire an inspector you can trust to do an excellent job and look out for your interests above all others.
Thoroughness
I'm a licensed professional engineer and certified residential inspector by the ICC (the group that writes the building code). I'm active in leadership of the American Society of Home Inspectors (ASHI) at both the local and national levels. All this means that I'm going to find problems that other inspectors don't even know about. Read what past clients have to say about me.
Detail
Many home inspectors use a check-list report where they simply mark some boxes, scribble a few handwritten notes and they're done. It's great for them because it's quick and easy, but bad for you because you don't get enough detail. I'll give you a custom-written, narrative home inspection report describing what I find wrong and what you need to do about it. The level of detail and clarity in my reports is unmatched by other inspectors. You should ask to see a sample report from any home inspector you consider hiring.
Time
Many home inspectors do 3 or even 4 inspections in a single day, spending only 1-2 hours looking at your new home. I spend 3-4 hours at an average home, with additional time after leaving the house to prepare the report. For larger or older homes I may spend 5-6 hours (...or more) at the house.
Independent
The vast majority of home inspectors rely on real estate agents for their business. In fact, most inspectors actively market themselves to the sales agents. This creates a conflict of interest. Is the client the home buyer or is the client the agent who refers many inspections? A conflict of interest will cloud an inspector's judgment about how to report defects.
I'm one of only a handful of truly independent home inspectors in all of Colorado who have pledged not to market to real estate agents in order to obtain referrals. This means that I have no conflict of interest and my only client is you the home buyer. I deliver an objective, unbiased report that is free from outside influences.
However, I do welcome the opportunity to work with agents who choose to refer their clients to me because they recognize the value of a detailed, thorough inspection and appreciate the fact that I take the time to explain the issues involved. If your agent has given you my name it's because they want to, not because I've asked them to. You can rest assured that they have your best interest in mind.