Vanity height by sink type — why a vessel cabinet ships shorter

The cabinet height follows the sink: a standard 32–34½″ cabinet + ¾″ top lands the rim in the 34–36″ comfort band; a vessel bowl adds 4–6″ so its cabinet ships ~30″; an ADA lavatory caps the finished rim at 34″ AFF with open knee clearance. Pedestal and wall-mount lavatories have no cabinet — the fixture sets the rim.

A side elevation comparing three bathroom vanities whose finished sink rims all land in the same 34-to-36-inch comfort band above the floor, even though the cabinets are different heights. A drop-in or undermount sink sits on a standard 34½-inch cabinet that, with a ¾-inch top, puts the rim in the comfort band. A vessel sink bowl sits on top and adds 4 to 6 inches, so its cabinet ships about 30 inches — shorter — to keep the rim in the same band. An ADA lavatory caps the finished rim at 34 inches above the floor per ICC A117.1 and leaves open knee and toe clearance with the supply and drain pipes insulated. This is why the calculator sets cabinet height from the sink type. — Source: ICC A117.1-2017 §606 (ADA lavatory rim ≤34″ AFF); NKBA comfort-height guidance

Use this diagram free on your site — grab the embed codeGet the code

What this diagram shows

A side elevation comparing three bathroom vanities whose finished sink rims all land in the same 34-to-36-inch comfort band above the floor, even though the cabinets are different heights. A drop-in or undermount sink sits on a standard 34½-inch cabinet that, with a ¾-inch top, puts the rim in the comfort band. A vessel sink bowl sits on top and adds 4 to 6 inches, so its cabinet ships about 30 inches — shorter — to keep the rim in the same band. An ADA lavatory caps the finished rim at 34 inches above the floor per ICC A117.1 and leaves open knee and toe clearance with the supply and drain pipes insulated. This is why the calculator sets cabinet height from the sink type.

Use this diagram — free

You're welcome to use this diagram on your own site, blog, handout, or lesson at no cost. The only condition is a visible credit link back to the source page. Copy the snippet below and paste it into your page — the credit is already included.

Embed code (HTML)

<figure style="margin:0;max-width:800px">
  <a href="https://remodelcalculators.com/construction-diagrams/bath-vanity-height-sink" target="_blank" rel="noopener">
    <img src="https://remodelcalculators.com/api/figure-embed/bath-vanity-height-sink" alt="A side elevation comparing three bathroom vanities whose finished sink rims all land in the same 34-to-36-inch comfort band above the floor, even though the cabinets are different heights. A drop-in or undermount sink sits on a standard 34½-inch cabinet that, with a ¾-inch top, puts the rim in the comfort band. A vessel sink bowl sits on top and adds 4 to 6 inches, so its cabinet ships about 30 inches — shorter — to keep the rim in the same band. An ADA lavatory caps the finished rim at 34 inches above the floor per ICC A117.1 and leaves open knee and toe clearance with the supply and drain pipes insulated. This is why the calculator sets cabinet height from the sink type." width="800" height="500" style="width:100%;height:auto;border:0" loading="lazy">
  </a>
  <figcaption style="font:14px/1.4 -apple-system,sans-serif;margin-top:6px;color:#555">
    Diagram: <a href="https://remodelcalculators.com/construction-diagrams/bath-vanity-height-sink" target="_blank" rel="noopener">Vanity height by sink type — why a vessel cabinet ships shorter</a> — courtesy of <a href="https://remodelcalculators.com" target="_blank" rel="noopener">RemodelCalculators.com</a>
  </figcaption>
</figure>

Please keep the credit link intact and don't alter the diagram itself. Redistribution as part of a competing diagram library or template pack isn't permitted. Questions? Reach us via the site.

Was this diagram helpful?

Bathroom Cabinets Calculator

Estimate vanity cabinets, sink cutout, plumbing rough-in, linen tower, medicine cabinet & mirror. Powder, full & primary baths. ANSI/KCMA & NKBA. Free.

Open calculator Jump to figure