At the beginning I got an acceptance from the bank to take a loan as an individual for a mortgage loan with a 4% interest this is like starting with no company which will get me with fewer expenses for the beginning (lower mortgage payments, no need to start a company and pay monthly an accountant for this but I cannot count any expenses that will be made in my investment, my country gives a standard 5% deduct on individuals so let's say my annual income is 10000€ , I got to pay 10000-5% = taxes for 9500.) 4.

, everyone knows about them and they are very time consuming with no clear date or if you are ever going to get any kind of a deed to the property.

As a PM I will tell you that Zillow, et all, has made the job of the leasing agent very time consuming.  

They are 95% legal in Texas...if you can comply.A pure option OR a pure lease is fair game, regardless of who is getting the benefit.If you are *getting* the LO (and not a consumer), game on. 

lol  Particularly is they have no idea how the business model works and the benefits experienced by consumers. 

Receiving rent, paying a vendor, paying the owner...it all required duplicate steps and was very time-consuming.

It's much less time consuming for you, and it also generates a sense of urgency among potential renters when they see others who are interested, too. 

The answer you will get is that they are expensive and time consuming. 

I would assume it would be too time consuming to try to assess more specifically the operating expenses of each particular house?

I've wondered, during a downturn, when fewer people can no longer afford to buy, if demand for rental homes increases leading to raising rents.