While most Net Zero buildings are energy efficient, perhaps even highly so in comparison to minimum building code requirements, there is nothing requiring them to anywhere new the efficiency level of a Passivhaus   .... this is why you will see odd things like warehouses with large rooftop solar installations being able to claim Net Zero.On the other hand, Passivhaus sets three metrics which a building must meet to be certified as Passivhaus compliant:  The building must have a heating and cooling demand of not more than 15 kWh/m2 (4,755 BTU/sq ft; 5.017 MJ/sq ft) per year  and a peak heat load of 10 W/m2.Total primary energy consumption (energy for heating, hot water and electricity) must not be more than 120 kWh/m2 (38,040 BTU/sq ft; 40.13 MJ/sq ft) per yearThe building must not leak more air than 0.6 times the house volume per hour (n50 ≤ 0.6 / hour) at 50 Pa (0.0073 psi) as tested by a blower door.Ironically, the research and pilot projects which fuelled what eventually became the Passivhaus standard was carried out in Saskatchewan as a National Research Council (NRC) project in the 1970s (the house is still in use today) and a similar project (Minnesota?)

I just need to jump in with both feet and not test water.

Don't settle for just the "dye test."

I look forward to it.Right now that "counting rental income from an in-law unit that a SFR has" magic is only for FTHB and loan amounts under $417k while they test the waters, but I strongly suspect that once they are done testing the waters it'll be rolled out to high balance and non-FTHB loans.

Since I was in Texas and planned on staying there I found out that I was qualified to take a test and become a real estate broker so I took the test and I got my license even though I have not ever used that full time.  

Since I was in Texas and planned on staying there, I found out that I was qualified to take a test and get a real estate broker license so I took the test and got my license.  

Do I ask for a test to be conducted prior to closing?

Since I was in Texas and planned on staying there, I found out that I was qualified to take a test and become a real estate broker, so I took the test and got a license but I never did that full time.Regardless of what I had, I felt more comfortable in the construction business.  

The next time you apply for a mortgage (same lender or different lender, makes no difference), underwriting is going to look at the file and apply a "BS Test" to see if it looks like you did indeed live there for that year you promised to. 

@Eric TomlinI agree about not using an LLC unless you are also looking for liability protection.As far as IRA custodian to use, hands down IRA Services Trust Company as they have been in business since 1978 so have had decades to be tested by regulators whereas many others have maybe been in business much less.