For the folks who may not be doing the amount of home inspections they would like, may I suggest trying commercial maintenance inspections.
There is very good money to be made if you make the right contacts.
Commercial building roof inspections are one of the best money makers I have come across in a while, and their simple.
Most owners forget a roof exists until interior moisture is found.
What I did to start getting this business to begin with is do a few large buildings real cheap, to get some real good pictures of deficiencies, and just about complete failures from age and lack of maintenance. I took those pictures and printed mini-reports to pass out to perspective clients, franchise restaurants, convenience stores, strip-mall owners, commercial real estate offices, etc.
Most commercial building owners have more than one property, and know other people who also have commercial buildings. Once you do a few the referrals keep coming, it is very easy to make an extra $25,000.00 a year just doing simple roof inspections with a lot of pictures and recommendations for repairs with simple preventative maintenance tips.