Bathroom Vanity Cost Per Inch: Width Is Priced Flat, ADA Is Not
Vanities are sold by width, and width turns out to be priced almost linearly: the median cost runs $10.68 to $11.66 per inch from 24 in all the way to 84 in, so buying a wider cabinet costs proportionally more and almost nothing extra per inch. The real spread is in the features. A plain vanity averages $11.08 per inch, wall-mounted "floating" ones average $10.71 — no premium at all — and ADA-compliant roll-under models average $18.07, or 63% more. Compare at fixed width and check whether you are paying for ADA clearance you do not need.
By OutletPicks Editorial, Independent price-comparison desk 4 min read· updated 8/3/2026profile ↗
What bathroom vanities costs per in
Live price terciles across the 59 bathroom vanities products we track, by real cost per in.
| Tier | Cost / in | Example pick |
|---|---|---|
| Budget | $9.97–$10.90 | Sigsyl 36 Inch Vessel Sink Vanity |… ($10.69/in) |
| Mid-range | $10.90–$11.08 | Sigsyl 72 Inch Double Vessel Sink Vanity… ($10.97/in) |
| Premium | $11.17–$19.30 | Sigsyl 24 inch Vessel Sink Vanity |… ($11.66/in) |
Width is the unit, and it is priced flat
A vanity is bought to fit an opening, so the comparable number is cost per inch of width. Run it across the cabinets we track and the result is unusual for this site: the number barely moves with size.
| Width | Listings | Median $/inch |
|---|---|---|
| 24 in | 12 | $11.66 |
| 30 in | 5 | $10.93 |
| 36 in | 9 | $10.83 |
| 48 in | 9 | $11.04 |
| 60 in | 8 | $11.12 |
| 72 in | 8 | $10.94 |
| 84 in | 8 | $10.68 |
From 24 to 84 inches — three and a half times the cabinet — the median cost per inch falls by 9%. Compare that with dehumidifiers, where doubling capacity cuts the cost per pint by nearly half, or extension cords, where the 40 ft version is 26% cheaper per foot than the 21 ft. Here, buying a wider vanity costs proportionally more and saves you almost nothing per inch.
That is a useful thing to know in the negative: there is no "buy bigger and save" move in this category, so choose the width your bathroom wants and spend the comparison somewhere else.
Where the money actually is
Split the same catalog by feature rather than size and the spread appears immediately.
| Configuration | Listings | Average $/inch |
|---|---|---|
| Floating, not ADA | 5 | $10.71 |
| Floor-standing, not ADA | 49 | $11.08 |
| ADA, floor-standing | 2 | $14.00 |
| ADA, floating (roll-under) | 3 | $18.07 |
ADA compliance is the premium, at about +63% per inch over a plain cabinet. That is not a badge — an ADA vanity has to clear a wheelchair underneath, which means a shallow basin, a rear-offset trap and wall mounting, so it is a different piece of furniture. If someone in the house needs that clearance the premium is the point. If not, it is $7 an inch for a shape you did not want.
Floating on its own costs nothing. Wall-mounted non-ADA cabinets average $10.71 an inch, slightly below floor-standing ones. The common belief that floating vanities carry a premium comes from the overlap: the three priciest listings here are floating and ADA at the same time.
Compare inside a width, not across widths
Because width is priced linearly, the comparison that saves money is same-size. At 30 inches the catalog runs from $9.97 to $19.30 per inch — a 1.9x difference between two cabinets that fit the same opening. The top of that range is the ADA model; the bottom is a plain floating unit at $299.
Fix the width your bathroom allows, decide whether you need ADA clearance, and only then rank on price per inch. In that order the decision takes one minute and the arithmetic is honest.
The short version
- Width costs about $10.65–$11.70 an inch at every size from 24 to 84 in.
- ADA roll-under: +63% per inch. Buy it for the clearance, never by accident.
- Floating: no premium once ADA is separated out.
- The spread worth chasing is within one width, where identical-size
cabinets differ by up to 1.9x.
Top 5 cheapest per in right now
Live from the catalog, ranked by real cost per in — cheapest first.
As of August 23, 2026: the cheapest in we track is Sigsoul 30 inch Floating Bathroom Vanity… at $9.97/in. Re-checked daily — the cheapest listings refresh first.
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Frequently asked questions
Why price a vanity per inch of width?
Because width is how vanities are sized, stocked and fitted — 24, 30, 36, 48, 60, 72, 84 inches — and it is the one dimension your bathroom actually constrains. Dividing price by width puts a small cabinet and a double-sink run on the same scale, which is the only way to see whether a given model is expensive for what it is.
Do bigger vanities cost less per inch?
Barely. Median cost per inch by width runs $11.66 at 24 in, $10.93 at 30 in, $10.83 at 36 in, $11.04 at 48 in, $11.12 at 60 in, $10.94 at 72 in and $10.68 at 84 in. That is a 9% span across a 3.5x range of sizes, so unlike dehumidifiers or extension cords, there is no meaningful bulk discount hiding in the larger sizes.
What does ADA compliance add to the price?
A lot. The five ADA-compliant vanities we track average $18.07 per inch against $11.05 for the other 54 — about 63% more. ADA models are built for roll-under wheelchair clearance, which means a shallower basin, a relocated trap and usually wall mounting, so it is a different cabinet rather than a trim level. Worth every dollar if you need the clearance, and pure overpayment if you do not.
Is a floating vanity more expensive?
Not on its own. Wall-mounted vanities without ADA compliance average $10.71 per inch, slightly under the $11.08 of floor-standing ones. The premium people associate with floating cabinets is really the ADA premium: the three most expensive units in this catalog are floating and ADA at once, averaging $18.07 an inch.
What is the cheapest way to buy a vanity here?
Fix your width first, then compare within it — at 30 in the range runs $9.97 to $19.30 per inch, a 1.9x difference at identical size. Almost all of that gap is ADA and finish, not cabinet quality, so the comparison that saves money is same-width, same-feature.