I'm on my fourth PM company as a landlord. 100% agree.

Where I buy houses the average lot size is about a quarter of an acre.

It's fourth of july in the middle of the week.

If so and I was to create LLC after buying my third or fourth property, is the cost of transfer to LLC at a later date really that expensive compared to the maintaining of LLC on just one property for few years?

1) Our PM conducts quarterly walkthrough inspections.

By talking more to the police, we found out that the main tenant had a long history of inviting guests in exchange for help around the house and that those relations would always turn tumultuous and that the police visited the house several times each quarter over civil complaints, suspicious activity, noise, drug related activity, and a bunch of other civil nuisance type of calls.

Thus, the fourth obligation was met under the Agreement.

In my case, I have residential rentals in one LLC, commercial properties in another, self storage in a third, and my real estate company operates in a fourth.

Examples where this has been done successfully include bed and breakfasts, self storage properties needing 24 hour management presence  with living quarters. 

At least in Missouri, and depending on size, you typically have to test your waste water monthly/quarterly, and then you have to file a form quarterly with DNR which reports the status of your treatment facility.