In my house I have a Maax which has the tub and lower part of the surround as one piece and then a second piece of the surround is added higher up-so it eliminates that join where the edge of the tub meets the surround where water tends to pool. 

That's where bad experience/nightmare come in.Lastly, to answer your question, to build a basically designed, square/rectangular house without crazy jigsaw puzzled cuts on roof, the following price is a good competitive construction only price for what you need to do:Around $165 per sq ft on conditioned space (for an average 1200 to 1800 sq ft house, 8-9ft high ceiling, everything is investor grade finishes), $90-100 per sq ft for garages/unconditioned storage, $60 per sq ft for porches/opened spaces.  

When you look at a 100 percent owned deal you cut the bank out of the picture as far as cash flow and get to pocket everything.

The higher splits go directly to the participating investors, we don't take any cut.

After losing my son and his mom, I realized that my time with him was cut even shorter because I had to spend most of my time at a job that I didn't even like.

You can have an attorney draw up some kind of partnership agreement, but that also cuts your ROI and increases your expenses potentially for tax advise. 

I guarantee you can find a younger, more upstart builder in your market who would be over the moon to have a PARTNER in things to pump up volume in a rapid sense, and would cut a far better deal.

My survey is 7 years old and we cannot locate the stakes even after cutting all brush back.

So,  if you are serious and have some experience, you can probably cut a few years off your business development trajectory, and save more than the $15-$20K fee by retaining this outfit.

I see this company called Investors Edge.