Garage or No Garage on a house flip

Hi everyone!

I have a signed contract for a house in Berwyn, IL. I plan on rehabbing and then selling - this is my FIRST house, so we'll see how this goes. 

Anyway, the house has never had a garage on the property. I want to see if anyone has thoughts as to whether I should have a garage built or not. Is it worth the expense? All of the other houses on the street have some kind of garage structure, and the lot is wide enough for one (38 feet).

Any thoughts would be appreciated. I'm excited about this opportunity!