For example the contractor had to replace roof or do other repairs to make the property rentable and I spent 2 hours talking to the roofing company and plumber? 

Make sure you are dealing with a reputable contractor or keep looking till you find one.

If you really want to get involved with MTNs dive in by joining a reputable firm.

We need all the way from lawn care, pest treatment to plumbers and electricians.

You need to set them up to expect failure.I am not saying you will fail, but there is a lot that can go wrong and ruin their reputation.

I’ve called from 4,000 + miles away and dealt with a problem by calling a plumber and getting it done right away!

@Mounish Thatikonda, while I can't speak in too much detail about the financing side, I will note that I have never built a house, but had talked to lenders in the past, and they were willing to finance a new construction house for me with full personal guarantee and a reputable builder contracted to manage the construction.  

More so, going under contract and backing out on someone is a bad look and not one you want affecting your reputation starting out as a wholesaler.

I know mobile home has a bad reputation therefore not that many people are doing it and the competition is not that big. 

Sent you a pm but... as other have said: no fires really; yes a lot of hail; always need to watch out for foundation issues; and know a good reputable Roofer, like ME!