You know how I feel about experts… but consensus thinking is helpful to monitor for us Skeptics.

For now, we will wait and monitor the market in the area. 

Most do the "We Buy Houses" approach which solutions like Carrot works perfectly.   

One day I texted the notice to his OLD number that he doesn't monitor much apparently.

I would suggest with property management that you only need to monitor your owner portal.

ADUs are emerging as part of the solution in almost every housing constrained jurisdiction.

It's probably more to ensure you're in touch with what is going on at the property.I understand your frustrations and hope you find a workable solution. 

It sounds like your proposed solution is solid.

I recently ran into this question with my remote multi-family property so want to see whether people have any thoughts or what should be normal practice.I hired a local 3rd party property management company to help me monitor operations, manage payrolls, and handle issues for my remote multi-family property.

Best thing to do is you should meet with a real estate attorney to go over the specifics of this deal to come up with the best solution to maximize your returns as well as protect you throughout the transaction.