The first rule most storefronts meet is accessible customer service. Staff need to know how to communicate clearly and serve people with different access needs, including customers who use service animals, support persons or assistive devices, and you need a feedback process. Physical design requirements usually depend on your renovation scope, so a new service counter, waiting area or entrance path can trigger them. Door widths, ramp slopes and washroom details often sit with building code, so check those with your landlord or contractor.