One of the two stabbed someone at a gas station - I recognized them from the news article (they had security footage), and they've been turned in to the police (the police have all their info, but haven't acted on it yet).

For the duplex, gas heating costs less than $1,500/year.

@Jeremy MarshallIm a fan of gas and a central hvac system but that is common here. 

Unless it has a bad oIL TO SOIL leak an oil tank eccavatIon aND removal shouldn’t be near that expensive .

I get worried when someone says 50k lol that is assuming a 50k-80k utility overhaul.As far as leaks and I’m unaware of anything like that but I will address that for sure I want to thank you for bringing that up.

just deduct the remediation amount “ as if “ it is leaking .

So I hired a contractor to come clean the 40' long 10" diamater tree branch off the roof and numerous other branches leaning collapsed fences, I hired another contractor to come fix the roof leak. 

Also visiting that market to walk the streets and talk to residents and proprietors (think restaurant owners, gas station attendants and Uber drivers) often times they can tell you something in 5 minutes that you could never glean from hours of research.Cheers

There's a wealth of articles that describe their poisonous gas emitting drawbacks.

And the 2 apartments I was shown didn't have any issues noticeable without actual doing a full inspection (e.g. baseboard heaters that don't work, and an unvented gas space heater).