I fixed the mudding as best I could for about $300 in materials.  

I fixed the mudding as best I could for about $300 in materials.  

This only cost about $1,500 - $2,000 in materials and I had no prior construction experience.

I think I've found a good PML who's willing to do 100% financing (purchase + rehab), but I will definitely consider using CC's for upfront expenses like ordering supplies and materials and even paying the contractor ahead of scheduled work inspections/draws. :)

What is the flooring material currently in these spaces?

So $85000 was basically materials to build the house?

Then getting a repair done for about $500 for roofing materials and labor.

With regards to your comment on other investors - There are several reasons why you may be outbid, here are a few: 1) the other investor is a licensed contractor who saves on repairs by using his own laborers and getting his discount on materials/supplies. etc 2) they could be real estate agents who act as their own buyer/seller agent, paying the commission side of things to themselves 3) some of them may be true cash buyers with no high interest loans to pay back 4) The other investor may not have the same investment strategy as you to BRRRR - they may just want to flip it for a quick profit. 

I think it's beneficial to understand the cost of materials in your market.

In your experience, does the scope of work only include the cost of materials or does it include labor?