You won't be able to pull the necessary permits unless the zoning is compliant with the current code.

Does anyone have a good CONCRETE DRIVEWAY sub in Austin?

A concrete saw down each side or where it is cuts down on repour  and is much cleaner. 

We just ad a local guy put one under contract and then advertise it on CL.

This isn't necessary for a "compliant" mailing, but can save you money.

I said initially as loans must also be compliant with federal laws.

HUD-1 forms were not formerly required to close cash sales, and TRID documents are not required to close cash sales now, although either the HUD-1 or the TRID forms can be used if the parties so desire.In my own real estate businesses, I regularly have some transactions that must be TRID compliant and others that are exempt from TRID.

Your RMLO to be compliant in underwriting and processing a financing arrangement must verify income, employment, debts, credit and other matters just as if the buyer were obtaining a conventional loan.

Hand dug the 27' trench (yes, that's right and I'm 61 y/o) but now need to go under concrete footing of house (pier & beam).  

Owner financing using an interest bearing loan can only be done for one home per year to be compliant with Dodd Frank and SAFE Act laws.