Your unfortunate experience is summed up in the word ‘trust’.

Feel free to shoot me a PM and i'd be happy to connect further to share experiences or insights!

As far as I’m aware, there are no permits for the initial construction of this structure, where can I look to verify this and if there are indeed none, how much of an impact would this have on converting the property into an ADU?

I don't have a comprehensive experience  but I tried to find the least costly one for every step for me and applicants/tenants.

I speak this from experience and would love to save you all the $ I have wasted in the past!

Or will I go through with it and get some money and some experience which I can use later on in another deal?

Also, it is very cool you've got to host so many different types of guests and actually enjoy the experience.

Just wondering if anyone who have dealt the similar situation and have any recommendations on local engineer firms and contractors who have experience in this kinda project.Thanks ahead!!!

Your commission split will be higher in favor of the broker, BUT it's a good place to experiment and have your training wheels before branching off onto other brokerages that give you a better split. 

So the "story" of why you are buying a SFR rental but also renting yourself should be very clear in a Letter of Explanation.However, these cases can be looked at generally - do you have other investment experience - or is this first foray into real estate completely?