It's a fairly unregulated space (charging grandma $750 to puts around for 3 hours, after moving the old box from the horizontal sensor, which was the only problem with the garage door to begin with), so some combination of carefully reading reviews (you have to actually read them to make sure it's not 200 fake reviews), and maybe not giving them the full contract all at once, is in order. 

And, if feasible, charge for parking!

Keep in mind, you are NOT in charge!  

BUT The points they charge and interest are both way higher than normal, on some deals I ran numbers the points and interest were going to be 20k on properties where the ARV is 100k so you have to get properties at such a low price to make it work that it is so hard.

The reality is the opposite - if it's not in writing then the PMC doesn't have to provide the service or can charge extra for it!

The borrower gets the benefit of having access to capital fast and the lender gets the benefit of charging a higher interest rate and not having to pay taxes on the profit.

You take a deposit per usual and charge them for any damage beyond wear and tear.

I'm constantly juggling the rates for my Airbnb listings based on what my competitors are charging. 

What is he charging for the materials?

Would you be willing to share what you charge for your transactional funding loans?