But most people get them resolved through an attorney instead of a CPA.As someone who owns non-US investment properties and has to deal with legal/accounting issues in another country, I can definitely sympathize with wanting to get everything done under one roof.

I currently own a vacation rental in South Lake Tahoe and I am concerned about this permit cap.

You might have saved me some legals trouble that could have resulted from different people doing PM work across different LLCs.  

If one person finances, how does that work legally about property ownership? 

No legal advice given

I didn't even think about the legality of it all.

It is better for them to get half the profits than no profits, and you gain invaluable experience as they take you through the process with them.DO NOT go half-cocked and mail without having an understanding of the legal requirements for your area for assignment contracts.

Here's the issue/question: I feel like I'm leaving a lot of money just sitting in this land.Does anyone know about the possibility or legality of fencing off a 1/4 to 1/2 acre of the land and putting a mobile home/ tiny home for rental use? 

The intent is to prove your poor business practices/ attitudes when in legal disputes with your tenants.  

No permit was ever pulled when he was building/renovating the 1 bedroom unit in the back.