Please advise. 

While most municipalities do not possess an interative map as easy to use, once you famiarlize yourself with the base zoning districts that allow the 2-4 unit buildings, relying on the local zoning maps will help direct you to the specific areas within the municipality that possesses the proper zoning.

I'd appreciate the chance to speak with someone who's done this- ADU development- in this area, either in the City of Walnut Creek specifically and/or someone who's had to experience with being in an unincorporated county area in general. 

If you were to use AirDNA paid version as a starting point you could find specific properties and their trailing 12 months of performance. 

I'm using sites like airdna to help analyze deals but would like a little tip on how to navigate local licensing (if needed or not) and how I could maybe start one in Madison specifically what hoops I need to jump through?

if you have BP Pro, there are lease agreements for each state prepped by state-specific attorneys!

I was advised that for owning a single property, isn't cost effective to have it in an LLC.- Worried that, should I move to an LLC, my mortgage may be called to be paid in full by my company- Does this disqualify me from a 1031 in the future?

What can I do to help them or how can I advertise it my self any advise I can get to get someone in the other unit would be great 

A lot of people are still worried because of rates and uncertainty and generally would advise against buying anything now but with REI, if you can do it and it makes sense financially make it happen now rather than later and possibly miss out on it completely. 

Provide specific details about your ideal rehab process and your expectations.