The permits and architecture was done prior to start.).For most people the finances are the limitation to scale.  

The state will get its pound of flesh and my liabilities were better managed by executing perfect permitted work and excellent insurance.I'd sincerely recommend having a savvy CPA, Lawyer & Insurance broker.

Zoning and Permits: Make sure to check the zoning laws and permit requirements for building an ADU in the area. 4.

I'm attending local meetups too when my work schedule permits, but I want to do even more. 

Getting a bit overwhelmed with all the required County Level and City Level business licenses, STR permits and Tax accounts (Business Tax, Franchise & Excise Tax, Sales & Use Tax) to register with the state.

I know conventional lending could become an issue depending on the condition of the property.

Had an issue with trying to self-permit a build a few years back that was an HPR but had an "A" and "B" designation.

Short term rental permits are only granted to owners who will be renting their primary residence.

I'd check local zoning ordinances to see what is permitted. 

Unfortunately - my current lot for my primary is 1 acre and VERY sloped, and close to a water source (creek), so the county has not even allowed me to permit my downstairs finished basement without an extremely costly renovation to our septic (over $60,000, and that doesn't count demo'ing and replacing our driveway to get to the existing tank and leachfield), and even if I could permit it, it would essentially need to be a treehouse in the redwoods due to the slope (not a bad idea though, I would actually love a livable treehouse on this lot!