I found a house, of which at the time I fell for the character, general layout, and prospect of growth.

There’s always more to the story and your likely being played so just flat out say no .

Within the last 5 years he has done a new roof, actually built a peaked roof onto a flat roof, all new HVACs, new water heaters, fully renovated 4 units, flooring, cabinets, doors, bathrooms, etc. 

I think most would agree considering his character and history that It’s one of those things in life that is a hiccup to overlook for a month while things get in order .. however what happens if it goes on for three more months and you don’t get paid but his car payments do ?

If my guess is correct in who you are working with, it would be out of character for them not to respond and not to some reparation. 

You should get an understanding of their character, responsiveness, values, strategy, and more.I started in syndication as a passive investor with my Self Directed IRA.

We do a flat rate per door, some people do 10% of gross rents.

are ongoing expenses and likely to require ongoing revenue to support, vs. being able to run on annual flat fees that remain reasonable.  

https://www.dmagazine.com/frontburner/2018/06/everything-you-need-to-know-about-dallas-new-granny-flat-ordinance/

Apparently they only charge a flat rate $3000 fee for the listing realtor (And standard fees for the buying realtor).