If you are legitimately going to bring everything up to current code and possibly do other remodel work, you might have a case for nonrenewal to make the required repairs.

I've researched wholesaling so I know it is a legitimate business when you're working with the right people but I also know there are a lot of people who aren't as trustworthy or just don't know what they're doing.

I do understand that the current political climate has legitimized many segments of this nation to believe open bigotry is cool or ok, but freely spouting off about wishing little Black kids who have done nothing were white is tragic in my book.

You can also, if you do it legitimately, hire your children (if you have any). 

That's a nice deduction which you could probably come up with some argument to the tax auditor why its a legitimate business expense. 

Ask any attorney who will give you an honest answer, and they'll say that a litigation lawyer is more likely to file a nuisance suit with little to no merit against a defendant with significant assets, than to file a legitimate suit with demonstrable merit against a defendant with little to no assets.Bottom line, in our super-litigious society, I think it's worth spending a few additional bucks to have plenty of liability coverage.

If you determine you have legal standing to refuse, I would recommend being completely honest with these guests that you have a legitimate health concern due to your daughter's allergies, and hopefully they will be understanding and the dog can stay at home.  

If they refuse to leave and I had to evict in court, is redevelopment legitimate reason?

If you can legitimately triple the value of the home, flipping would be too good of an option to turn down.

So, if you write an offer for $100K, but are willing to pay more if there is a competing offer, you can write your offer of $100K, with an escalation clause up to $110K with proof of a legitimate offer.