However as Texas only allows a HELOC on your Primary Residence, I don’t want to lose this facility if I move to a new place (and I want to comply with the rules!).

It's an A-framed garage with shingles roof, gutters, windows, and a 32" exterior door (in addition to a 16' operating face door). 

You can check the NMLS for licensing (some servicers will operate without being properly licensed in that state).  

If you operate under an LLC or other business structure, are there tax implications or requirements I should be aware of when paying myself?

Investor focused realtors & Property managers are going to be your biggest asset since they'll be finding your deals & managing the day to day operations for you.

And some expensive ones for larger operations.

All depends on the operator, the segment there playing in. 

Looking forward to the journey ahead....In my experience, very few properties in Ohio are strictly required to operate as Section 8 rentals.

In my opinion, the best agents, appraisers, home inspectors, contractors, lenders will utilize AI as a complement towards their existing businesses to spur greater growth and operational efficiencies.

They look and operate fine and the cost to replace is minimal.