Hello Jenny, you can show copies of cancelled checks or money order stubs for the months in question.
As a lender would require any documentation to prove payments made on time for a length of time. You may be able to put additional deposits if it is requested or a new landlord may not even ask.
You should study RENT vs BUY listings to compare payments and qualifications.
The rentals in Troy are scarce and they start from $795 for a 3bd 2ba mobile home. The purchase start from 79k for 2bd 1ba single family home. You may qualify to buy and pay less than rent in many cities of TX. Check out the web reference link below...