Estimating repairs of flip

[Steven Cherry]

Hi all!  I’m looking at purchasing a flip.  Purchased my first rental about a year ago but no good experience with a fix n flip.  I want to purchase this property, but need the most efficient way of estimating renovations.  What do you guys do for this?  Do you have a renovation company come out before purchasing, go over what you want done, and get an estimate?  Do you pick line item by line item yourself, hoping you captured everything?