This inventory level still places us in a seller's market which may be surprise to most people.

Yes, you can raise rents to market rent and people will stay.

I know of a few ADU facebook groups that seem to be a wealth of knowledge for people building them or intending to build.

My question is: what are people currently investing in that works for them under these market conditions? 

Sure, some people will pay cash, some will bring plenty of equity from their last house, but there will be plenty(way too many people) who still cannot afford 6% at this level of prices.

Of course not all will be interested in your house, some may have purchased already, but it is something to start with.I probably have 5000 people or more in my database, but the chances of any 1 of them being interested in buying your house are pretty slim. 

Okay Peoria people, I live in Nashville now but I grew up in Peoria for 18 years.

Ask what people renting bedrooms are paying.

Too often in these firms, the CPA who signs off on your tax return does not have the time or the motivation to check the work of the people to whom he delegates.

Their people are very friendly, helpful, and knowledgeable.I also recommend that any who can to go to their expo - there is a lot of great information for investors.