That cost me about $1,000 each time. 

During this renovation period would you, as the lender, want an Actual Cash Value or Full Repair Cost policy in place?

Agree it is difficult to assess costs when they vary so much by location.Keep in mind that some turnovers are sickenly expensive, and that is just the nature of the business. 

You don't discuss your investment properties or direct client wins.If you don't provide real-life examples of your success or your client's success, people will know you don't have the experience to help them.

I have an example, there is a client that I work with and he had never flipped before.

I would highly encourage paying a GC to walk deals out the gate, have them give a scope of work so you can see what items costs.

@Kerry Baird Love hearing about others taking advantage of cost segregation studies.

During this renovation period would you, as the lender, want an Actual Cash Value or Replacement Cost policy in place?

Cost segregation utilizes the MACRS approach.

Here's an article with FAQs including the cost of a study.