A case in point, I read an article the other day about a survey Zillow did where half of the economists interviewed are forecasting a recession in Q3 of 2020.

On many models, the condenser fan is designed to dip into the water at the bottom, which tends to fling the water at the condenser, helping cool it off and work better. 

The home inspector may have put the model numbers on their report; you can determine the size from those, and with a little Googling, you can probably come up with the SEER and furnace efficiency.Call a few local HVAC companies and see if they'll give you an estimate over the phone, for that size furnace and A/C, with equal or better efficiency to what you have now - some will quote you over the phone and some won't. 

This unit hasn't been roofed over so water leaks are always an issue on these older models.

The lots are for sale for 30k each & I can see this as a scalable business model IF I could get financing for such a property with the mobile homes already in place.

However, in the investor's business model, that may only make sense when the goal is equity build-up rather than getting the higher cash flow.Commercial loans for multi-family, etc. are a bit tricky right now.

Wholesaling is transactional.things are changing in some states with the unlicensed activity of assigning contracts.. depends on the state.in Oregon if your business model is to assign contracts  any form of advertising them via e mail  flyers craigslist bp market place etc is deemed an activity that a license is required.. see below from our state regulators. 

We do lease options for several reasons but the primary reason is because the lease option model creates 3X or more profit for us as investors.Is the option a set price?

The home he found wasn’t vacant and ready for full rehab; the tenants he screened were terrible; the rehab costs came in higher than forecast; he couldn’t sell the home as an owner-finance in over five months; he didn’t remit what few payments there were to me in a timely fashion.

I believe it's a great model that can work in the real world, but there are lots of moving pieces to be managed and a lot of ways to leak capital while doing it.