Though I appreciate the idea of finding online resources and studying them, I find that a curated, tried and true formula (if it works) is much more worth my time than spending time trying to find which resource works best and then spitballing the ideas until something sticks. 

On the renewal for the license, I asked if the loft was considered a bedroom and the response I got (unsurprising when it comes to taxes & fees!)

Also, her text response "I'm moving out" might have jut been an off-the-cuff comment and not a formal notice. 

Thanks for the response.

With this strategy, who would be responsible for utilities? 

Been getting nowhere with zoning laws found online and in the local library for Yonkers (in westchester county) as to whether any permits are needed in order to operate such a business. 

You can create your own, or there are house flipping spreadsheet templates available online 

Just be mindful of the responses you get to your question.

He's an adult, he needs to take responsibility.

Thanks for your response