It took about 9 months to stabilize it and then I cash out refinanced it.

And no, refinancing isn't your only option there.

There are many online marketplaces, including BP, where you can post your properties.Aside from selling by owner off the MLS, which offers the greatest flexibility to make a "deal" with an investor, generally it might be best to work with a seasoned investor friendly seller's agent that can guide you through the process and potentially find an investor.

Also want to add an ADU to get extra cash flow but not sure how much a fully permitted ADU adds value to the property when refinanced.  

Everything I read online says DO NOT use exterior stain on the interior due to the fact it gives off harmful chemicals. 

@Nate J.Send me a PM as I just did a webinar online with over 15+ places to find notes online

Lets meet or chat online for note partnering if you are still in this business. 

DMs and reaching out online is one thing but getting out there to meetups with other investors and boots on the ground at open houses, etc is a great way to get involved.

Many states operate under Caveat Emptor and have no disclosure requirements.2) These are probably not latent, or hidden, as a most jurisdictions have online permit and violation searches you can conduct. 

Hey, I am about to do an ADU on an investment property thinking it will cost me 100k but wanted to know how much you believe this added in equity when you refinanced (having a fully permitted ADU).