The rents are too low to support long term capital expenses (roof, new furnace, etc).

The roofer has done two roofs in the past month and a third this week.  

Gut rehab for an SFR in northwest Indiana would be around that new plumbing, electric, hvac and roof.

Eliminate any areas with heavy snowfall, (burst pipes and roof damage).3. 

The rental demand is through the roof.

Theyll take care of the nuisance landlord headaches, but you'll still own it (a good thing) and be on the hook for major repairs like roof and HVAC (a bad thing). 

The property is in a C grade trending towards B grade neighborhood, close to shopping, public transport, and a solid high school, has all new windows, updated roof, masonry, electric, and rear porch, and one of the 7 units was fully rehabbed recently.

When I re-roof I knock the chimneys right off. 

He built them with low maintenance materials and just recently refurbished 1 of the duplex buildings with a new 40 year metal roof, new water heaters, refrigerators, dishwashers, stoves and AC units.The 2nd duplex still needs to be refurbished but is currently rented, so this gives the option of forced appreciation.

He includes video when needed and has a drone to get high roofs and aerials.