The big companies like Honeywell, Siemens and (less so) Samsung will be a bit of a drag on interoperability as they try to drag their proprietary solutions into play.  

I see the value his money provides, but also want to come up with a solution that is fair to everyone involved. 

One solution we have around this issue is RENT TO OWN - buy the house, fix it and then sell it rent to own.

Hi Adam,I really like the suggestion from @Dale Shin, send the tenant a friendly letter, trying to amicably find a solution to the missed rent increases, word the letter in such a way that you are not forcing this on them.

Louis has more restrictions when rehabbing buildings than Kansas City does, so this might not be a viable solution for your window issue.  

I came here to find productive ideas and creative solutions, so if all I do is complain about what I already know, throw darts at me until I shut up and start asking good questions that get me back towards a cash flow existence. 

I was almost ready to purchase a SFR as my primary home, but the previous resident had smoked in it constantly and the smell just wouldn't go away even with high levels of cleaning solutions and other remedies to get rid of the smoke.  

We have patience, solutions and money. 

His solution is for me to entirely replace the sink AND the cabinets that it sits on.

You definitely were right on with the chic modern look!