The Idea:
Clean empty homes or apartments that are being readied to show to potential renters.
How it Works:
Landlords who are busy showing their properties to potential tenants don't have time to clean up and make small touch-ups after the last renter. Enterprising entrepreneurs who are good at cleaning but don't want to work a weekly schedule can make a tidy profit catering to this market. You can add to your profits by providing comprehensive apartment-prep services, including painting, carpet cleaning and handling small repairs. Advertize yourself to apartment complexes, individual landlords and real estate agents.
