Living room w gas FP framed wall to wall w wood accent feature.

Tankless water heaters only need 120v to operate but need gas.

Rent your STRs to traveling workers in the oil and gas industry. 

These older homes have gas space heaters, it’s pretty typical for this area.

In my experience the largest value drivers are (in order):Adding additional bedrooms when you canWasher dryers in unitoptimizing utilities (sub-metering, switching Hvac/appliances to electric when direct gas metering isn't possible) Stainless steel appliances New lvt flooringWhite cabinets (painted or newly installed)backsplashFresh flat white paintQuartz counter tops (or modern Formica - market specific)updating bathrooms / reglaze Its not a hard and fast rule but if the property hasn't been renovated in 20+ years it's rare that some or all of the above won't force appreciation especially in Columbus! 

Don't blame you for that, I'm sure Trumbull has its fair share of DD, gas stations and pizza.

He suggested a bunch of stuff but the biggest was to get a real estate lawyer to look into the property because there could be leans or other issue like the property being on an old gas station property which can be a big issue.

It seems that he opted not to run the furnace (gas) and instead used space heaters.

Gas or electric and if gas is it a power vented model.

If not, where is the nearest and who will be responsible for cost of extending these-  Additional utilities like Electric and Gas service availability.