Instead of inspiring confidence, they overwhelm the seller with negativity.

I would recommend against being the GC unless you are confident of doing more than one effort.  

For real estate just start analyzing as many deals as you can so you get more comfortable and confident.

The improvements needed to be completed within the 180 day timeline, so I did a pre-fab ADU.

If you pay the $250 and they say it's all perfectly glued and installed schedule 80 then you're going to have confidence without worry.

What are the best areas of a single family house to renovate that will have the greatest improvement to home value?

I'm a pretty handy guy but this would be outside of my realm, but my experience helps me understand how much this type of improvement should cost.Improvements: remodel kitchen and bathroom, paint interior, fix exterior scafolding.How should I go about finding a contractor?

Hi all,Posted on biggerpockets my first deal back in 2011, this forum gave me the confidence to get it done. 

Many improvements may qualify as Qualified Improvement Property (QIP) and can be written off immediately rather than being capitalized.A question that investors ask a lot is if they should perform a cost segregation study before or after a rehab.

None I could say with confidence without knowing more details on the borrowers experience, property type, city, and project numbers (PP, Rehab, ARV).