Essentially in that same 10 year time period of buying homes every year, you can still 10X your money but with very little work.

I've been able to get city owned homes and update all the essentials; roof, plumbing, electrical and service the HVAC for 3 bed 1 bath houses that rent for $700-800.

I'm my experiences I have found that a highly rated school district will greatly help in finding quality tenants.

But I know how important cash flow is, so I appreciate the feedback on how the two are essential components to a good deal. 

@Michael Lutes,The short answer is this:[1] In the RM-1 district, the minimum lot area required per dwelling unit is as follows, provided that, whenever the calculation of permitted number of dwelling units results in a fraction of a dwelling unit, then the number of permitted dwelling units shall be rounded down to the nearest whole number: 325(.a) A minimum 360 sq. ft. of lot area is required per dwelling unit for the first 1,440 sq. ft. of lot area.(.b) A minimum of 480 sq. ft. of lot area is required per dwelling unit for the lot area in excess of 1,440 sq. ft.; provided that, if the green roof conditions set forth at § 14-602(7) are met, the number of units allowed is 25% greater than indicated by the foregoing lot size requirements, applied prior to the inclusion of any other applicable increases in allowable units.Click the link below for zoning use chart: (Table 14-602-1.A)https://codelibrary.amlegal.com/codes/philadelphia/latest/philadelphia_pa/0-0-0-154712#rid-0-0-0-170236You also have to check if you are located in an overlay district.

This can be a very brutal expense to absorb if it were to happen, essentially taking all profits to fix.

All this being said, school districts were not a high priority for us since we don't have kids yet, just two lovable pups. 

Specifically in Illinois, real estate services are "essential" and permitted. 

@Meaghan SimonichThe different pain points vary from commercial type.Retail- Depending on if it essential, a lot of retailers are begging for rent decreases or can't pay at all right now, and for retailers that do not have a internet presence, it is making it tougher to compete.Self Storage- Keeping the site updated -security, more automated features for tenants (Pay by app/kiosk, automatic gates, maybe more amenities on site (wash station, air hoses, etc.)Industrial- Longer lead time to find good tenant.I wish I could comment more on some of the additional commercial classes, but these are the only ones I have experience with.

one argument i heard against that was that if you basically have all the transaction done via 1 bank account, you essentially cant argue these are separate businesses in case of a suit