How to estimate a rehab

[Ugo O.]

Hello Everyone,

When looking at pictures of a home, how do you go about estimating what the cost of the rehab would amount to? Do you ask for more in-depth pictures of the property and then go to the contractor and ask for a rough quote? I can imagine this would get annoying for every single home. Another thing I am thinking about is getting pictures, and then writing out the items that need work, putting an upper band figure on it, and then using that in my analysis. 

But I want to hear from the more experienced folks, how are you guys able to accurately analyze rehab costs?