I've since paid of my mortgage and have no slavery inducing loans to service.

What would be a fair price to pay for his services?

The common saying you get what you pay for definitely justifies higher rent as my focus is to differentiate the properties with quality and customer service. 

Service charge if property is located in building with multiple owners (150-350 € p.a.)Also, depending of the nature of your contract you eventually are liable for stamp duty (10 % of one month rent, upon signature of the contract).In overall very dry deal.

Reserves of 4 to 6 months depending on the size of holding is something that would be a good idea,, you never know when a eviction, turn cost, or unexpected repair is going to be a cost issue.. and new landlords aren't usually prepared for them.

However, the water company now requires that, first, a new meter pit be installed outside of the a home, a new second service line be run underground to the basement, etc.  

Once they have accepted our offer: they can set the mortgage payment up to be serviced through the escrow company so the seller knows the mortgage is being paid on time.If they have a Home Equity Line of Credit (HELOC) it will need to be paid off through escrow when selling Subject To The Existing Mortgage.All that’s left to do is to sign the contract and and we the investors will walk them through the rest.

Part of my dismay with the method is that I see A LOT of people advertising that they offer this service.

The devastation left behind by Hurricane Harvey could result in 300,000 new mortgage delinquencies, with 160,000 borrowers becoming 90 days or more past due, according to a new forecast from Black Knight Financial Services (BKFS).This new forecast is based on a comparison to the 2005 damage left by Hurricane Katrina, when mortgage delinquencies in FEMA-designated disaster areas across Louisiana and Mississippi soared by 25 percentage points and peaked at over 34 percent.The areas impacted by Harvey have twice as many mortgage properties as those impacted by Katrina—Black Knight estimated there are 1.18 million mortgaged properties in Hurricane Harvey-related FEMA disaster areas, with $179 billion in unpaid mortgage balances.

@Kayla PerryI would be interested in your services or at least have a conversation about real estate in the area.