Tax deductions for mileage when managing property for parents?

[Ellen Cheng]

Hi, my parents live in California and recently purchased two investment properties in Atlanta, GA. I am taking care of the properties for them (repairs, getting tenants, etc.). My parents are not paying me as a property manager and I don't want to be paid because I don't want to deal with California state income taxes or other additional tax burdens (and more so, because they are my parents). But I'm wondering if there is a way my parents or I can claim mileage deductions on taxes for my travel related to taking care of their properties. Has anyone dealt with this issue before? I wasn't able to find anything from an Internet search...