should bathroom vanity match kitchen cabinets?
It's not necessary. In fact, too matchy-matchy across the house is boring.
It is definitely ONLY personal preference. I don't like mine to match....I want dark in my bath and light in the kitchen. Lighter makes rooms look bigger....
Today, it is more customary to match it to the bedroom furniture. Don't do the bathrooms and kitchen the same, it will be to much of one thing. I suggest having the kitchen and each bath different from the other two. c-ya
You would not want to carpet or lay laminate flooring under the cabinets/vanity anyway. Tile/linoleum could go under but that is not necessary. Just work you way around them and if necessary finish off with trim/molding that can lay right on the floor and would be nailed to the cabinets/vanity. I'm assuming by counter top stove you mean free standing, which means it sits on the floor. In this case you would want to remove the stove and extend your flooring underneath it. Same with the toilet. You would need to remove it (find a how to book) and extend the flooring underneath it so that the toilet will sit on top of the new flooring. Look for a 'remodel' wax ring when you replace the toilet. Since the toilet will now be up to two inches higher you will need the new, thicker, 'remodel' ring. Good luck.
Not really, it used to be cheaper for builders of tract homes to buy from one manufacturer all of the same cabinetry for a subdivision in bulk. But, now in most of the upscale models and remodels the kitchen and bathroom cabinets don't match.