Thank you! The cabinetry in this powder room finishes at 39" wide, with the countertop overhang it would be 41". The space between the wing wall shown and the wall to the right would be 45" so there is 2" on each side between edge of the countertop and the wall itself. With any furniture piece or free standing vanity I recommend around 2-3" minimum between the edge of the countertop and the wall so it will give it a truly freestanding look. Custom or semi custom bathroom cabinetry comes in a variety of sizes, so find one that best fits your space - remember to take countertop overhangs into consideration (typically adds 1" - 1.5" to each side of the cabinetry). Good luck!