My family has a home in Joyuda that was pretty much destroyed during hurricane Maria and no one rebuilt.

The sellers did not disclose that there was a previous fire in the home.

So, unless you did some substantial improvements were made you may or may not have an appreciable difference in equity.

we own a home in a rural community and the home runs on propane, all utilities including propane are to be covered by the tenants.

I let my tenants do work on my homes all the time and haven’t had a problem.

Philly is a great option for row homes, but the out values aren't there for a flip right now.South Jersey may have some decent prices, but not a ton of demand on the flip unless it's in-line with what's around it, but better.

Other than price, what seller-funded incentives are working to move a remodeled single-family home?  

You learn more from not-so-great deals than from home runs.Improving the asset and getting higher rent is certainly an option, but I would really look at some 10 year math to help you decide.

I'm doing some improvements before listing on Airbnb, including installing a small half bath in the attic bedroom.

They don't want to sell their home, however, but would rather keep it and turn it into a rental property, esp. since it is in a very good school district.Their current LTV is like 20%, very high equity.