If you consider the time you spend providing these services to the customer, then you might be considered a real estate professional.
To be a real estate professional, a taxpayer must provide more than one-half of his or her total personal services in real property trades or businesses in which he or she materially participates and perform more than 750 hours of services during the tax year in real property trades or businesses.
If you decide that you fall into this category then you should report your income and expenses on Schedule C, if not you can report them on Schedule E.