You still have to submit detailed plans to the city for your commercial space. An architect is best able to help here as they are familiar with the building cod

You still have to submit detailed plans to the city for your commercial space. An architect is best able to help here as they are familiar with the building code, permitting process, etc. They can also help account for things the prospective ice cream shop owner isn't aware of. For example, regulations around hand-washing stations for food-based businesses. I happen have an ice cream shop and we used an architect. Their experience designing other retail locations was very helpful.