@Jason Sung, common sense says that yes it is true.

It makes sense in places where it has temperature extremes.

That makes sense.

So your 35% operating expenses makes sense and seem plenty conservative to me.  

W2 and 1099 income, 2 kids, renting, and 1 rental.At what point does it make sense to hire tax help and how much should that expect to pay?

But, there are still deals that can make sense depending on your budget. 

I have personally wanted to build my home on this land for 10 years, as I've always been interested in this.Issue is, I've never done any work with residential development, only smaller land development, about 13 acres, and commercial, all on my own.With the residential development, I'm trying to get a sense of anyone in the space currently and what some ballpark costs might be for infrastructure and how that all works.

DOM is useful in a micro sense, though, especially if you are considering whether or not to use a PM. 

Multiple investors with decades of experience, some GP, some LP, some skeptics about the entire business in general sense and some bulls who have gotten rich from investing have all chimed in on this you got links to specific case studies from Brian Burke, a seasoned syndicator, a guy check from Melanie p, who makes it a part time job taking the trash out and exposing the shenanigans of one syndicator after another.Greg Scott has an excellent reputation on these forums, and provides a counterpoint to Melanie’s skepticism.

There is no requirement to use them as mentors for doing the rehab projects as described in the horror story above, but they do their own underwriting so they will be investing themselves to assure the deal makes sense and is successful to assure they get their payments and interest.