Overage clause and mortgage

[royw]

Also known as Clawback. If the land is developed they want a percentage of the increase in value.

[royw]

I'm looking at a property with a large garden with development potential and an overage clause. How much of a problem will this be for getting a mortgage? Would it make it easier if the land the property sits on is excluded from the clause? I'll start enquiring on Mon but wondered if anyone had experiece...