From what I have heard it seems that the anti-short-term rental groups were actually started and funded by the hotel lobby to undercut the competition from local investors in the short-term market. 

How much notice would you say is reasonable, considering they are kind people (despite being dirty and missing payment dates) and will have a hard time finding a place to bring their large dog.I'd given them written notice based on the rules for your area to get the process started (whether that's 30 days or some other number), and then tell them you'd be willing to work with them on the official move out date (within reason) if they need a bit more time to find a place so long as they are current on rent.

So, would I be correct in assuming the proper way to do this is to officially buy the note from him and have it recorded? 

Also, many investors have been lobbying for High-Density legislation.

The buyer usually holds the title, but it's not official until the contract is paid off. 

Where I'm at in California, if staff (the planner) is being obstinate, then the other two routes are 1) hire a land use attorney or entitlement consultant and if they feel that you have a case to build just one home without going through the subdivision process, then they may be able to compel staff in a way you can't, or 2) talk to an elected official who may be able to sway staff to give you what you want.

*Not official tax advice.

More Federal Reserve officials at their meeting last month signaled concern with cutting interest rates too soon and allowing price pressures to grow entrenched.

February 9th came and went with them telling him that they never got an official notice to move. 

Justin,Work with an OFFICIAL Airbnb SuperHost Ambassador.