"Many single-family investors sidestep the issue( in regards to hiring a PM) through home warranties and lease agreements.

I purchased my first flip property in 2019 through my SIDRA - I hired a general licensed general contractor.

To make a long story short, I am using my rental income to purchase a new home that we will be living in and was prequalified with no issues (mortgage company hired third party firm to look at my rental income and returns to qualify my income, I gave them every document on earth, leases, taxes, insurance, mortgages, etc...) and then underwriting says no due to the fact that the last 2 years of tax returns (2017, 2018) I reinvested all my money into my rentals and they are deducting all that out of my income, ie. depreciation, capital improvements, supplies, repairs, utilities, maintenance etc... 

This is just a company implementing somewhat of a “turn key” ADU deal for homeowners, anybody could simply hire their own architect, GC, and agent to rent out the unit and accomplish the same thing for likely less money and not be stuck with section 8 tenants.

I would be hesitant to hire anyone to inspect properties for you that is not a professional in real estate and know exactly what to look for.  

Correct, that is exactly what I am saying and that cost would be if you hired each sub out individually and acted as your own GC.

I ended up hiring cleaning contractors and looking to hire handy man to fix few things, that will cost more than damage deposits ($1100) before to make this house ready for new tenants.After I told everything to seller he is not gonna sign the paper to release escrowed amount to me.

Enough that even larger contractors are hiring inept trades people.  

I would advise you be stern with your requirements or hire a property manager so you don’t have to deal with that :).

Perhaps a nice 1950's built bungalow.Always hire a 3rd party property inspector to give you an unbiased feel for the home.