It's a little bit of a complicated situation, so I won't go into too much detail.

Without the gritty details I wouldn’t jump to conclusions that it will cost that much.

Based on projections and current bookings, I'm on track to make anywhere from 35-50% more than rental cost each month.Yolanda Thank you for the detailed response.

I'd love to hear about this in more detail. 

I don't want to divulge all the details for the world to see, but basically my father left me an asset when he passed away and a couple of moves with that asset allowed us to book a huge Capital loss carryforward, which I finally got to use with this sale.

You should also dissect BP forums and blogs to get more detailed information on your niche. 

Tonight is a holiday but I will review all the details of our Florida real estate contracts as I know there is a section that discusses cooperation from seller with closing out of permits, liens, etc

I’ll keep an eye on this post to see if anyone offers any good advice for us neophytes.

This was a huge eye opener for me as I would never have thought of the age of a septic system as a variable. 

No one in this forum is going to be answer conclusively either so your best bet is to speak with  a local zoning lawyer and also to the zoning officer in town in detail.