I'm most curious about the 12 month cash out refi requirement for Fannie Mae.Per Fannie Mae, "If an existing first mortgage is being paid off through the transaction, it must be at least 12 months old at the time of refinance, as measured by the note date of the existing loan to the note date of the new loan.

Money is transactional... it comes and goes.   

@Sai Kumar Recommend exploring as many sources as possible to get referrals AND cross-reference them to get as much accurate information as possible.Check out NARPM.com, BP’s Property Manager Finder (BiggerPockets: The Real Estate Investing Social Network), etc.Also, encourage you to learn from the mistakes of others - by reading posts here on BiggerPockets about owners not having their expectations met by their current Property Management Company.

YOu as the buyer showing proof of your ability to pay (through actual bank statements with cash and/or closed sale transaction proof showing you are a proven all cash buyer that closes will instill confidence in the wholesaler and allow them to perhaps make less on the deal but can do more deals knowing they have a quality buyer in hand is a win win.

But, overall, you will never know until you cross those lines. 

I'm not familiar with how European real estate transactions work but personally know I would feel a lot better if there was a third party involved holding the money

Constant communication, follow ups, being on top of their transaction, and making sure to not be salesy by pushing out terms that may or may not work. 

The cash-out refi necessarily means thousands of dollars in additional expenses - likely setting you back further than you went forward in mortgage pay down during the same time period if refinancing in 1-2 years - but hopefully earning more equity in the meantime (fingers crossed).  

That will ensure there will be built in equity that you can figure out a way to suck out equity via a cash out refinance, line of credit, cross collatorization, or selling the property.

However you'll need an agent to assist with the transaction.