What I think is a valuable tool/person to have in your corner now more than ever is an investment specialist or specifically STR specialist realtor that knows how to underwrite and thus knows how to find a good deal.

I do not think that this is a requirement, based on the language of 469(h)(5) Section 469(h)(5) doesn't mention this specifically, but ....IRS Pub 925 clarifies this, Spouse's participation.

The problem is when we got a survey done for the buyers, it showed that a barn mostly on our property has a corner sitting on the neighbor's property.

(a) Anyone entitled and desiring to redeem real estate under the provisions of this article must also pay or tender to the purchaser or his or her transferee the purchase price paid at the sale, with interest at the rate allowed to be charged on money judgments as set forth in Section 8-8-10 (as it is now or hereinafter may be amended), and all other lawful charges, also with interest as aforesaid; lawful charges are the following:(1) Permanent improvements as prescribed herein.(2) Taxes paid or assessed.(3) All insurance premiums paid or owed by the purchaser.(4) Any other valid lien or encumbrance paid or owned by such purchaser or his or her transferee or if the redeeming party is a judgment creditor or junior mortgagee or any transferee thereof, then all recorded judgments, recorded mortgages and recorded liens having a higher priority in existence at the time of sale which are revived under Section 6-5-248(c).If the redemption is made from a person who at the time of redemption owned the debt for which the property was sold, the redemptioner must also pay any balance due on the debt, with interest as aforesaid thereon to date.(5) Mortgagees of the purchaser, or their transferees, are considered transferees of the purchaser, and a party redeeming must pay all mortgages made by the purchaser or his or her transferee on the land to the extent of the purchase price.If the purchaser's mortgages do not exceed the amount of the purchase price, the balance must be paid to the purchaser.

Is there a specific section to post or on my profile?

But if you rent any property, including part of your home, for more than 14 days, then you have to report that income on your taxes.However, based on what you said, you won't meet the IRS requirements (Treasury Regulations section 1.280A) to be considered a short-term rental (STR) when you file your taxes. 

The layout of the lot would have to be just right (for example a corner lot) and the main house may need to be discounted depending on what's happening there (for example if now there is no garage, part of the backyard was chopped, etc.). 

There is a plan to avoid this entire section (In section 3) but it is important for us to know about these restrictions.

Talked to the CHA and they said there are no section 8 listings available and that only tenants can control the property being section 8. 

Cash flow - rents in the area are $800-900 based on a search of what's available, current rents are $600-750. with Section 8 @ $800 for a 1/1.