@aaronpk yes - we added them when we renovated the bathroom and it's great. Also a power outlet by the toilet for a heated toilet seat, and another inside of the bathroom cabinet for charging razors (so they don't have to be out on the countertop all of the time).
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@aaronpk if you're going to have a wired security system, having the security company installer come and do that before the walls closed up would be good.