I got licensed and have been learning brokerage and hope to transfer these skills into becoming a principal at some point.

Also check if PM need to be licensed in that state as you could run into other problems.

@Tony ThomasIt will only cost you money for licenses, insurance etc.

Does this require plans from a licensed architect?

I'd like to get them licensed in California, but it is very difficult. 

I am also a licensed realtor, but only use it for investing purposes.I am very Jubilant to have joined this vast network!!!

I decided 22 years ago that listening to uninformed agents was over so I got my brokers license and started what has now grown into a large Real Estate investment company with many agents helping other to find and manage their little to large personal plots.

I'm currently working on getting my real estate license.

Youll need to read through them and put in an application for an ADU license 

In short, it's usually practicing real estate without license, but many people know how to do it "legally".