How to get an easement to garage?

[Levi Benton]

Hello everyone! 

I am under contract to buy my first investment property. We wanted to use this 500 sqft addition in the back that has no windows and is on a concrete pad as a garage. It would work perfectly and seamlessly. There is one parcel next to us connecting to the alley and it is owned by the city. the parcel is currently 12 parking spots and that's it. 

We tried asking for an easement over 2 of the spots so we can complete the garage and make a path to the alley, but we are waiting on the city to get back to us. Is this the only way to go about making access to a garage over another's

property? 

It is our deal breaker if the city denies.