It limits the chances of being taxed or penalized. 

I'm getting the numbers from the water/sewer/trash people, but since the cost is usage dependent, I would also like to gather some real world numbers, or rules of thumb, in order to estimate these costs on a monthly per unit basis. 

And I don't start showing it until the current tenant has fully moved out, and I've had a chance to make any necessary repairs and have the place professionally cleaned for the next tenant. 

Either way, expenses are too low.You need to learn how to estimate future expenses and rents.

They claim to be able to increase your chances of getting approved for a loan or line of credit.

I then have to add the materials to get a good estimate of the job.

There isn't even a thought or decision here... had they come to you with a heart tugging humanizing story at least there is a chance you might consider especially if you feel the circumstances extraordinary, or be upfront and honest about whatever hardship they are facing and perhaps you have a solution that works for everyone - but a threat? 

@Brandon Turner any chance you sell these templates in the "Lease Templates for all states" packages you recently put out.Any advice on this much welcomed!  

@Kristin DaveyHey Kristin, any chance you have any friends/relatives/co-workers you wouldn’t mind living with?

Your old property has appreciated.If I were you, I would spy on your local competition to feel comfortable your estimates for market rent and sales price are solid.