Stay with oil,  replace the tanks and the oil furnaces with new tanks and units.2.

I can't speak to many other cities but Calgary is in a state of cooling after oil took a tumble. 

3) It has oil heat boiler that needs to be replaced.

Tax adjustments, water adjustments, oil adjustments (if applicable), attorney fees (if attorney state), transfer tax (if state requires), concessions can happen sometimes.

But I figured it had to have at least an oil tank in the basement at some point.

Luckily I will be doing this on a full time basis and the many years of project management experience in Oil and gas Services contracting should be of some help.

Frank,I am a mechanical engineer myself and moved to Houston to work in oil and gas!

., any towns near the oil fields of western North Dakota can be risky...the region is heavily tied to the strength of the oil market which can be great when everything is going well, but can get ugly quickly when the oil market turns)? 

I'd like to get some a second opinion but I don't know where to start.We converted from oil to gas when we bought it in early 2015.

I thought for sure Calgary will crash with 2 oil prices crashes since 2008 – the market is now described as “soft”.