Keep in mind whether or not you will have to sell your services or if someone else will be selling you into the work. If you are the seller who interfaces with customers, that changes the dynamic about how much money you can make. Will your customers (the people who hand you a check) be the home owners, real estate agents, or some other entity or company? If you are self employed in this venture, you need to understand all the dynamics of how it works.
Key questions:
What is the average charge for an inspection? Do you get all of that or just a portion?
Can you run this business from your home?
When you have completed an inspection and get a check for the work, is any of that money needed to pay hard costs incurred during the inspection?
In Ohio average home inspections cost between $300 and $500. Call it $400 average. If there are no hard cost associated with an inspection and you get to keep all of the $400, then we can do some calculating. To earn $70,000 a year gross income you would need to do 175 inspections a year (70,000/400). That comes to 3.5 inspections per week for 50 weeks on average. If you're the salesman, can you sell 3.5 jobs a week? Can you perform 3.5 jobs a week including the follow up paperwork? If you are performing 3.5 jobs a week, will you have time to market your services to get more customers?
This kind of quick and dirty analysis is a good way to get a handle on the feasibility of taking on a new job or business. If you change your income expectations or the amount you earn per job, you change the dynamics of the business. Now if as a home inspector you are employed by a company, then things change depending upon exactly what your relationship with the company is. Would you be under contract? Would you do the selling or the company? Would you be salaried or commission? etc.