Also, I hear some charge transaction fees,.My properties are in PA and FL.

Very few people are geared up to transact in English or Spanish I would expect.  

However, but is it market to enter into an agreement with a property manager on just a lease transaction?

Look at this DAILY. 

Unless there is significant equity in the property 50% LTV may not be enough to payoff the current underlying mortgage.Now here are the exceptions to lift the COB 50% limited LTV restriction:- you inherit the property and it was transferred into your name either via legal award from a domestic partnership/marriage - you have been on title for 24 + months- you took title to the property that was transferred from a partnership or partnership like entity (LLC, LP, etc) that you can document the ownership of 25% or more in- you lived in the property and have been on title for atleast 12 months as a primary residence- you have paid the mortgage for atleast 12 months - or you can demonstrate a relationship with the obligator (domestic partner, relative, family member, etc. )If you qualify for one of the exceptions you are not limited to the 50% max LTV  when considering fannie/freddie conventional cash out refinances on a subject to transaction.

In a capitalist society every transaction is based on both the seller and the buyer/renter thinking they’ll be better off after the transaction.

It serves many benefits for both buyers and sellers and if a law had been passed long ago that all such private transactions were required to be serviced through a thrid party, we would not have as much regulation addressing the issues we have today, specifically, the individual investors under the SAFE Act!

This is usually not available in wholesale transactions.

Quote from @Michael Smythe: @Zehua Zhou usually, your 401k will lend funds to your LLC.In that case, you would give a PMC the LLC EIN.You really should get advice from a tax professional.Michael, what you are proposing is a "prohibited transaction" defined by the IRS. 401k would be prohibited from lending funds to the account owner's LLC.  

400+ flips, nearly a billion in transactions and over 4K units under management, experience/operations in 27 states, 5 countries, 3 continents.....