This room uses the top of the beadboard as the backsplash for the vanity
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I would make the breadboard higher, above the backsplash. You can add backsplash to all walls touching vanity or just us it in back like this one. Here the paint on the beadboad is the same as the walls -I did this in Winchester
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Wainscotting on the walls with vanity. A little more formal than headboard.
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This would be about the width of your vanity
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Beadboard on the walls with a vanity. Here they use the headboard as the backspash
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More beadboard. If you can't move the wall and you need to do a pedestal, I like this shape.
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Beadboard with a vanity but I think you might want a bigger vanity than this
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This vanity has a backsplash that matches the counter top. I think it would be nicer if they rounded the edges of the backsplash.
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Wooden vanity option
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This looks to be about the same size as your 1/2 bath. I like it with the beadboard
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Wainscotting option
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I think I would make this vanity larger in this scenerio
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Another concept if the headboard is too costly or doesn't work
White vanity with white beadboard
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