Sewer issues in Chicago are very common which is why I ALWAYS recommend / almost require my clients to get them done + if there's trees in front or in the back of a property, there will almost always be plumbing issues + needed rodding. 

In each category, note how much you are bothered or stressed on a 1 to 5 scale, with 1 = not bothered at all and 5 = stressed out: Pain Points Stress1 to 5 Pain Points Stress1 to 5 Unit turnover Exterior maintenance Advertising for available units Deferred capital expenditures Tenant screening rules Plumbing or electrical emergencies Tenant selection / discrimination rules Mortgage payments Documenting move-in conditions Bookkeeping and bill paying Documenting ongoing conditions Taxes and insurance premiums Dealing with tenant complaints Risk of late payments or non-payments Dealing with neighbor complaints Risk of property damage or vandalism Mold, termites and rodents Premises liability Interior maintenance Evicting tenants If your completed table has mostly 1s and 2s, then congratulations—you are a happy landlord!

Property details: 3 bed 2 bath both sides with attached garages, aluminum siding, copper plumbing, 1972 construction, separately metered, all electric water heater, range, dryer, public water and public sewer on a slab foundation in a great school district right next to brand new construction everywhere.

You still have flooring, cabinets, bathrooms, plumbing, insulation, paint, etc, so all that cost remains the same it would seem. 

Water in the plumbing system freezes at 32.

The reason for this is because most mechanicals electric plumbing are more in line with today's code, and a lot of these properties typically need more cosmetic type of rehab.

I can fix almost anything and have experience with electrical, plumbing, flooring, roofing, siding, drywall, etc.  

For older properties, expect a higher CapEx due to potential issues with major systems like roofing or plumbing.

Electrical and plumbing all updated within the last 4 years.

Water leaks, problems under the trailer ie insulation falling, a tub cracking, a new roof, frozen/cracked pipes (usually in January- and plumbing companies simply will not respond to mobile homes), rotting siding, bad exterior doors etc.