Now they're full of 5-10m homes.

In the last couple months, the zoning has changed for my home, and the lot is now classified as RM1 (low-density multifamily), and I have learned that I can build 3+ units, and don't need to include any off street parking. 

"Do I need to buy it as a second home"?

I know for sure that in my area of Texas (well outside of major metro areas), we've seen the cost to build new homes almost double in price. 

Also, when not occupied, the PITI on a high-end home can quickly erode prior cash flows.

If similar homes are sitting for 30-70 days, it’s probably a pricing issue.

Your realtor should help you by doing the comps for those homes.

I’d love to hear more about your experiences over the years.We are specifically looking to purchase single-family homes in the $80,000–$150,000 range and are considering renting them through Section 8.

Buying a single-family home with a detached garage and converting it to an ADU is much simpler.

I leased out my unit and moved back home to take care of them.