You could either build a bar on top of a couple modular cabinets that rest on the floor or you could attach a bar top to studs in a wall.
Building a breakfast bar wall.
Build the base for the cabinets with 2x4s.
Screw your shelf brackets or corbels to the wall at those marks.
The second option is particularly easy and cost effective and it works in any kind of home as well.
How to build a breakfast shelf find the studs in your wall using a stud finder and mark lines 42 inches up from the floor.
Eating bar height is typically about 6 inches higher than your countertop typically 36 inches.
To begin building the base for the top plate of your breakfast bar cut one 2x6 lumber with a circular saw to fit the new breakfast bar space.
Use your level to make sure.
Frame in the breakfast bar with 2x4s.
Check for clearance before designing planning or building a breakfast bar.
Remove any nails in the studs.
Install drywall on both sides of the frame.
Step 3 build the spacers.
Lay the bar top centering it over the brackets and screw in place.
However you can install a non invasive breakfast bar in an apartment with no problem.
The barren wall might.
How to build a breakfast bar on an existing wall getting clearance.
Use a hammer to remove drywall all the way to the floor.