Space rental at a mobile home park

[Thomas Hanks]

I'm looking at buying a 7 space mobile home park with one stick built house that is owned by the park.  All of the  mobile homes are owner owned.  I was thinking of charging a flat rate  per space.  This morning I was given the space rental rates and there are 3 different rates being charged. All of the spaces in the park are the same size. 

Is it normal for a park to charge different spaces different space rent? 

thanks