Rental Property Rehab System needed

[Eric Rodriguez]

Hello BiggerPockets, 

I would like to hear your thoughts on the best way to work with contractors in a way that one pays for materials, still pick finishes but have the contractor handle all the materials pickup, exchange, returns, etc? 

Current situation: Spending too much time building orders and picking up materials at Home Depot and Lowes for rental property rehab. 

I really appreciate your comments and suggestions, thank you!