The govt absolutely has to help nudge new construction or this problem is never going to be corrected. 

A Heloc is loan that can become a sore thumb if not used correctly and can hurt the property it's on and the users credit.If you are going to use the funds for a down payment then a Cash out refinance is what you want to do to get the cash in hand. 

It's always best to consult with a real estate attorney to make sure you're structuring the deal correctly.

If your goal is to grow your LLC, consider arranging all of your properties under an agreement with your LLC to manage them & take all of the legal steps to ensure that the structure is correct. this may involve creating LLCs in the state(s) your LTRs are in to own the property and your PM LLC managing those properties, so that you don't have a concentration of all of your portfolio in one entity.

Austin is correct, a cost segregation can help you break down the depreciable basis of the property into personal property (5 year), land improvements (15 year), and buildings (if any such as clubhouses, laundry rooms, etc.).  

Is that correct?

They have a wholesalers package that they charge for but it will have all the information that you will need to wholesale correctly. https://hockertitle.com/

Paint 1 coat of the same color over the walls.

I want to ensure that it’s written correctly.  

Your suggestion if I understand correctly after googling the terms, is too look into county owned properties or lots?