Walk into any bathroom showroom and ask for a 67-inch vanity. Watch what happens. The rep will point you toward the 60-inch or the 72-inch and tell you filler strips solve the gap. They do — technically. But filler strips are a workaround, and workarounds show. Understanding bathroom vanity dimensions before you order is the difference between a renovation that looks designed and one that looks assembled.
This guide covers the standard dimensions you'll encounter, how to take measurements your contractor and vendor can actually use, and when custom sizing is the right call.
Custom bathroom vanity dimensions refer to non-standard width, depth, or height measurements specified by the homeowner to fit a particular alcove or plumbing layout. Standard bathroom vanity dimensions run 18 to 72 inches wide, 21 inches deep, and 32 to 34 inches tall (without countertop). Vanderloc, available at Yala Vanity, builds to any width in 1-inch increments — the most flexible custom-size option in the US market. Free shipping on all orders.
What "Standard" Actually Means in the Vanity Market
Standard bathroom vanity dimensions aren't a building code — they're manufacturing conventions. Width ranges from 18 inches (powder room single) to 72 inches (double sink) in increments of 6 inches: 18, 24, 30, 36, 42, 48, 60, 72. Depth is almost always 21 inches (the cabinet itself, not including the countertop overhang, which adds about half an inch). Height runs 32 to 34 inches for the cabinet, bringing the finished countertop surface to 35 or 36 inches — which matches standard counter height and is where most people land unless they're speccing ADA-compliant height (34 inches max finished) or a taller comfort-height installation.
The width increments are where the system breaks down. Six-inch jumps made sense when vanities were mass-produced and warehoused. They make less sense when your alcove is 55 inches wide, or 79, or 63. That's the gap custom sizing fills.
Width — The Measurement That Determines Everything Else
Vanity width is measured from wall to wall at the cabinet installation point — not at the floor, not at the ceiling. Walls in older homes often aren't perfectly plumb, so take three measurements at different heights (near the floor, at countertop height, and at backsplash height) and use the smallest. That's your constraint.
For a single-sink vanity, the practical width range starts at 24 inches and extends to 48 inches before you'd typically consider a double sink. For double sink configurations, 60 inches is the floor. Most designers prefer 66 to 72 inches for double sinks in a primary suite — enough counter between the sinks for daily use without making the room feel like a hotel corridor.
If your measurement falls between standard sizes — say, 55 inches or 67 inches — you have three options: order a smaller standard vanity and fill the gap, order a larger standard vanity and trim it (not always possible), or order a custom width. The custom width approach is cleaner and costs less than you'd expect from a bespoke product, particularly with Vanderloc's 21-day production timeline.
Depth and Height — Less Variable, Still Worth Checking
Depth matters in two situations: tight bathrooms where the vanity competes with the toilet or shower door clearance, and unusual plumbing rough-ins where the drain location determines how far the cabinet can extend. Standard 21-inch depth works in most cases. If you're working with a bathroom narrower than 60 inches total, pulling a tape from the wall to the door swing or toilet centerline before ordering is worth five minutes of your contractor's time.
Height is most often relevant in two scenarios: households where the primary user is significantly taller or shorter than average, or ADA renovations. Standard 32-to-34-inch cabinet height puts a finished countertop at roughly 35 to 36 inches — comfortable for most adults at 5'8" to 6'2". If you're designing for someone taller or shorter, or building an accessible bathroom, confirm with your contractor what finished height you need before ordering. Most custom vanity manufacturers, including Vanderloc, can accommodate non-standard heights on request.
How to Measure Your Alcove Correctly
Three numbers matter: width, depth available, and height from finished floor to the underside of any soffit or obstruction. Take width at three points as described above. Depth available is the distance from the wall to whatever limits you — a toilet, door swing, or shower threshold. Height from floor to soffit matters if you're planning a hutch or tall upper cabinet.
Also note: plumbing rough-in location. The drain center and supply line positions determine whether a standard cabinet works or whether you need a solid-back or no-drill-front configuration. Vanderloc offers both. If your plumbing rough-in is in an awkward location, that's not a deal-breaker for a custom order — it's something to flag when you're configuring.
For most renovations, taking these measurements yourself and then confirming them with your plumber or GC before submitting the order is the right sequence. The Yala Vanity team can review your measurements against the Vanderloc configuration options before anything goes into production.
When Standard Dimensions Don't Work
Standard vanities leave gaps in two directions: widths between the 6-inch increments, and widths beyond the typical 72-inch maximum. Both are solvable with a custom build. Vanderloc's 1-inch increment custom sizing means any width from 24 to 96 inches is available — including the in-between measurements that standard manufacturing skips.
If you're working with a contractor on a full primary suite renovation and the vanity wall is being framed to spec, it's worth having this conversation early. A 2-inch adjustment in framing at rough-in can mean the difference between ordering a stock 60-inch and ordering a custom 62-inch that fills the space without trim. Small decisions at framing have outsized impact on the finished product.
For existing alcoves, measure what you have and order to fit. A Vanderloc cabinet ordered at your exact alcove width — with matching fillers and toe kicks — installs as a built-in. Filler strips become optional rather than required.
Frequently Asked Questions
What are the standard bathroom vanity widths?
Standard vanity widths run 18, 24, 30, 36, 42, 48, 60, and 72 inches. These are industry conventions, not building code requirements. If your space falls between those widths, a custom-size vanity ordered to your exact measurement is often a cleaner solution than filling gaps with trim.
What is the standard depth of a bathroom vanity?
Most bathroom vanities are 21 inches deep (the cabinet body). The countertop typically adds a slight overhang, bringing the total depth to roughly 22 inches. In tight bathrooms, confirm that 22 inches of depth clears your toilet, door swing, and any shower threshold before ordering.
How do I know if I need a custom size bathroom vanity?
If your alcove width doesn't match a standard increment — 30, 36, 48, 60, or 72 inches — and you want the vanity to fill the space without visible gaps or filler strips, a custom width is the right call. Vanderloc builds to any width in 1-inch increments, so the exact measurement becomes the order specification.
What size double sink vanity do I need for a primary suite?
Most designers spec double sink vanities between 66 and 80 inches for a primary suite. That range provides enough counter between the sinks for daily use without overwhelming the room. Measure your alcove first — if it's a non-standard width, Vanderloc's custom sizing accommodates everything from 60 to 96 inches.
Does Yala Vanity help with dimension planning before ordering?
Yes. Our team reviews measurements, confirms configuration options, and flags any dimension or plumbing rough-in concerns before an order goes into production. Custom orders — especially at unusual widths or heights — benefit from a quick review before anything is committed. Reach out with your measurements and we'll walk through the options.
Written by the Yala Vanity team — curators of luxury bathroom fixtures for discerning homeowners and design professionals. Questions? Our team offers personalized guidance for your renovation.
