The City has told me that the sign has been scheduled to be removed and that they will not allow any new signage on the road.

To me the quadplex would be dual purpose, while you are not living there it serves as a reliable stream of income, once you move there, you could live in 1 of the units while you build your permanent home, and you could also use it for when your family comes over for large gatherings.A 2nd option might be to build an RV park, Unless their are zoning restrictions, you should be able to build one fairly inexpensive, with a septic system and either public water or a well, you can keep your costs to a minimum by doing gravel roads, which are easier to remove later if you don't want them. 

I've played around with upping price and significantly reducing the cleaning fee and removing the grill fees but it didn't really change much.

The order clearly states she must leave or be removed from the premises because that is his address.   

I recommend looking into enzyme cleaners as well, as they are also effective in removing odors.

Zillow shows house removed 4/19, bit different from MLS data, zillow not totally reliable.  

I removed the addresses but this is the form you need to get the rental value, meaning no 2 months of rents received needed.  

Ask the two brothers to remove his belongings and put them in storage or something.

In the units that I am renovating, I am considering removing the intercom / buzzer in these renovated apartments for a few reasons.

We added $40K-$50K refinishing the hardwood floors, removing wallpaper, painting walls and updating the kitchen & bathroom with new cabinets, adding granite countertops and creating a BEAUTIFUL dining room off the kitchen that was wasted space as an enclosed porch, and also added french doors leading out to a newly-built pre-finished deck we added so the new owners could enjoy their gorgeous fenced in backyard.