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I am roughing in the plumbing for a bathroom sink that I am going to build a vanity for. I'd like to have the drain only impact a top drawer and take up as little space as possible. The drawer back will wrap around the plumbing. How close can the drain be to the bottom of the counter with a vessel sink? In other words, how high can I rough in the drain? The supplies will be on either side and tight together. Thanks for any thoughts.

  • Faced with the same question (but for the aesthetics of a wall-hung sink), I just bought the sink and test-fit it. My initial plan was to put the trap behind the wall (there is access on the other side), but the trap arm actually sat higher and was less visually intrusive than a 90* elbow and straight pipe would have been. – Phil Esra Sep 16 '15 at 6:33
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Your vanity plan should have front side doors in line with where the sink is located. Then the drawers should be off to the left or right side where there is plenty of height and space toward the back to accommodate their placement.

There are multiple reasons to not put drawers in the vanity under the sink area:

  1. People stand in front of the vanity at the sink. It is extremely inconvenient to have drawers opening out at knee height where the you want to stand.
  2. You cannot place any sort of drawer directly in front of the sink and drain because there is just not enough depth from the front face of the vanity to accommodate the drawer. Any drawer placed below the bottom level of the sink would have cabinet face framing running across in front of the cabinet that would make it difficult to make access to the space under the sink.
  3. Having drawers in the space under the sink will restrict access to the water shutoff valves keep it from being possible to quickly inspect the drain area in the case of suspected leaks.

So I really recommend that you not put drawers in this part of the vanity cabinet. You will find plenty of things to store in the area under the sink behind the doors.

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