What wet bars and built-ins in Louisville include
A dry bar is cabinets, a counter, a back panel, shelving and usually an undercounter fridge. It gets a dedicated circuit and some under-cabinet lighting, and it handles ninety percent of what people use a bar for.
A wet bar adds a sink. That means supply lines, a drain, and the same question every basement bathroom faces about where the waste goes. If your sewer line leaves above the slab, a bar sink needs pumping or the slab needs breaking, which is covered under basement bathrooms.
Built-in shelving, media walls and window seats are the other half. They solve the problem a finished basement creates, which is that the open space where everyone piled boxes has just become a living room.