Without a written record of this arrangement, is there a way to claim any compensation for those renovation costs, or would that be difficult to prove in court?

This is gonna be a learning experience due to dealing with environmental court.

For curiosity I asked Co-Pilot about it and got this response:The language in your CC&Rs stating that “no business or bed and breakfast is allowed” can indeed impact the interpretation of short-term rentals, but it may not be as straightforward as it seems.Definition of Business: Courts have often ruled that short-term rentals (like those listed on platforms such as Airbnb) do not necessarily qualify as a “business” in the traditional sense.

The best thing you can do without going to court and in this case 50/50 chance of losing, negotiation them down on their price.

Will court still proceed and grant eviction case in my favor?

My wife and I had a lot of money stolen from us by a so-called property manager in Cleveland (who was later brought to court by the attorney general due to other crimes he committed) and we ended up being able to place the property with Re/Max Haven Realty. 

I would get an attorney or agent involved and in reality you should only be dealing with him as he owns the home unless there is a court order elsewhere that gives her some rights tothe propertyI think it's possible the final decree of divorce or the property settlement agreement required her to give him a deed in return for him paying her equity. 

According to the water meter, approximately 1 days after being served the court summons for eviction, the tenant turned on all of the faucets in the home and ran them for about 55 days.

I live in a trailer court a mobile home trailer house I own just pay lot rent so other night we minding our own business he came over to stay the night because it was day of work and management was drunk didn't know to later but she was knocking on my door I didn't hear her as I was cleaning up a mess in bathroom my son made my older son said someone at door it was management she yelled screaming call my man all kids of names yell at me about my disability saying things about his sex offender registry and such in front of my kids made a much of threats and bunch of other things were said but problem was she did it drunk and had most of the neighbors on my street gathered together to watch or do this and then gathered around gossiping about me afterwards.

Since the lease was with both then you need to make the check out to both, to do otherwise would be making a legal determination which is what the domestic court is for, and where they can take their issue to resolve.