But, if the cost is fairly nominal, maybe under a couple grand, and you have no experience in real estate, including owning your own home and hiring contractors for that, then it is likely worth it.I would always start with a deep assessment of where you feel you don't have adequate knowledge.  

Hey I did deep search in a lot of sub markets throughout different states.As I see, the average profit per average property is around $350 per month.Anyone else can confirm?

It would be my way of helping other professionals become successful without having to reach as deep into their pockets as the current marketplace approach affords.Any reason why I should not create open source building plans?

There was an interesting post on Realtor.com - https://www.realtor.com/advice/home-improvement/deep-theme-d...It is all about the creation of themed homes and rooms.

I am unsure as to the foundation of the cottage, but the modular portion appears to have been a poured slab (approx. 5" deep) with concrete block skirting. 

It sounds like you're diving deep into the numbers, which is great.

We are a group of investors with deep pockets and a saturated local market (Utah is after all the capital of Real Estate coaching).

Use caution and build a solid team before getting too deep into a rehab is my best advice.

Your buddy hired a pretender, so they got a bad quote.A quality PM has a deep bench of honest, proven contractors.

Do that in your post and ask what are you missing before deep diving and looking for numbers or marketing analysis.