Reduced rent for maintenance

[Kirsten Milliken]

First, I know many reasons why this is not a good idea...but, I am doing it anyway. 

I am renting my home to an acquaintance of mine.  I have offered to reduce the rental rate in exchange for him agreeing to maintain the property and take care of any maintenance and repairs up to $500 per incidence.  I have a list of items he has to maintain regularly.  

I am wondering if anyone has a lease addendum that covers such an arrangement.