When selecting the proper deed from always use a Grant, Warranty, etc. but not a Quit Claim. 

He didn't have the proper car insurance and the homeowner insurance wouldn't cover it.

Your home inspector will be able to determine if the gas burning appliances are vented properly.

Ensuring you can classify expenses properly is important.

@Greg Todrank There is actually a fair amount of differences and particulars to pay attention to with trailers/manufactured housing vs conventional built. 

If the township closed the oil tank pull without a dig, then there was no leakage, but since the tank (whether oil or septic, which is unlikely) was decommissioned and filled with sand that is not proper procedure and does not preclude a leak of oil.

If you can't properly estimate rehab costs and don't know an honest, reliable GC (general contractor) that can, you either need to learn how to do it, find someone who can do it for you, or forget it altogether. 3.

Will buying a new manufactured home (Trailer/Mobile Home) and placing it on a foundation make a good rental property?

That company should be able to provide you with accurate information on the what and how to do it properly.

The property is in a really hot neighborhood and if renovated properly, would rent for 2k.