fbclid=IwAR3Ym8qIkzl0e19FhTBJAjcXy3gJsS-VM5-c2r4v684wIQWH5MVPIjt5xfM ... if they pass proposed regulations... there are at least three different proposals in that article...As an owner of multiple STRs here - I don't mind a $200 a year tax on them... it will probably keep out many operators that are not as serious... regulations so often end up benefitting bigger operators (eg. hotels) and hurting true mom and pops. 

Wordpress is still used by majority of websites but a lot of Wordpress owners are slowly shifting away from it because of it being a super high maintenance site (updating theme, plugin, software, database, etc).

Many for-sale by owners aren't aware they are legally obligated to disclose.

Full Disclosure - I'm an owner of JWB Real Estate Capital (Jacksonville Wealth Builders.)

If I booked a place and I agreed to the cancelation policy, my plans changed and I do not get a refund then why even bother the owner.

How can I find a list of homes that are not currently for sale but that may have an ADU, so that I can start to reach out to these owners about any potential interest in selling?

2 points - First, in most states (and SC appears to be one), you can only act as Owner/Builder on your own residence, not investment properties. 

Does anyone know about the new owner?

Worst case scenarios are like you pointed out, or there is a disagreement of the contract and you friend backs out.When you are renting it out, typically the owner (your friend) is responsible for taxes and insurance. 

Will they allow a loan assumption as the new deed owner?