A bathroom vanity is bought once and used every day for years, and almost every expensive mistake comes from the same short list: the wrong width, the wrong depth, a sink position that fights the plumbing, or a faucet bought before anyone checked the drilling. This guide works through the decisions in the order they should be made, using the sizes and configurations in our own catalog as the reference points.
Step 1 — Measure the wall before you look at a single vanity
Measure the finished wall space where the vanity will sit — after tile and trim, not the rough framing. Record four numbers: the width available, the maximum depth (usually set by the door swing and the walkway), the position of the water supplies and drain measured from the nearest side wall, and the height to any obstruction such as a window sill, outlet, or existing mirror. Then measure the path the vanity travels — hallway turns, door widths, stairs. A 72-inch vanity that fits the wall but not the bathroom door is a freight return, and freight returns are the most expensive kind.
Leave working clearance: roughly 21 inches of clear floor in front of the vanity is the common building-code minimum, and 30 inches is noticeably more comfortable. If your measurements land between standard sizes, size down — a 36-inch vanity in a 38-inch alcove works; a 37-inch vanity does not exist to rescue optimistic measuring.
Step 2 — Choose the width
Vanity widths are standardized because bathrooms are. Our catalog runs from 20 to 84 inches:
- 19–24 inches — powder rooms and the smallest full baths. Storage is minimal; the win is a real sink in a room a pedestal made useless. See 24 inch bathroom vanities and small bathroom vanities.
- 30 inches — the compact full-bathroom standard; one sink, honest storage, fits where 36 will not. See 30 inch bathroom vanities.
- 36 inches — the most flexible single-sink size: counter space on both sides of the basin and storage that swallows daily clutter. See 36 inch bathroom vanities.
- 42–48 inches — a generous single sink with real counter room, or the starting point for a primary bathroom that serves one person at a time. See 48 inch bathroom vanities.
- 60 inches and up — double-sink territory (our doubles run 60, 61, 67, 72, 73, and 84 inches), plus a few extra-wide single-sink designs. See double sink bathroom vanities.
Step 3 — Single sink or double sink
A double sink needs width to be worth it: below about 60 inches, two basins crowd out counter space and elbow room, and most couples end up using one side. At 60 inches and above, a double genuinely serves two people getting ready at once. A single sink in a wide vanity trades the second basin for counter space and a larger storage layout, which some households use far more. Also check your plumbing: a double sink needs either two sets of supplies or a split from one, and basin positions are fixed by the countertop — compare them against your measured drain positions from Step 1.
Step 4 — Floating or freestanding
Floating vanities mount to the wall and leave the floor visible, which makes a small bathroom read larger and cleaning simpler. They demand a wall that can carry them: studs or structural blocking rated for the cabinet, stone top, sink, and contents — drywall alone is never enough — so they suit planned renovations better than quick swaps. Freestanding vanities rest on the floor, forgive imperfect walls, usually offer more storage depth, and include both traditional and modern styles. Neither is better in the abstract; the wall you have and the look you want decide it. Our floating vanity guides go deeper on mounting and sizing.
Step 5 — Depth: the dimension people forget
Standard vanity depth is about 21–22 inches including the countertop. In narrow bathrooms, a full-depth vanity can pinch the walkway and crowd a door swing; reduced-depth models around 16–19 inches exist precisely for those rooms, at the cost of a smaller basin and shallower storage. Our narrow vanity fit guide works through the trade-offs with real model depths. Depth is stated on every product page — check it against your Step 1 numbers, not against the photograph.
Step 6 — With a top, or cabinet only
Most of our vanities are sold with the countertop and sink included — the simplest route, with the basin and drilling already matched to the cabinet. Cabinet-only models suit buyers pairing a custom stone top or reusing an existing one; if you go this route, confirm the top's width, depth, and sink cut-out against the cabinet before ordering either piece. Every product page states plainly which configuration it is.
Step 7 — Countertop and sink materials
- Marble (including Carrara) — natural stone, cool and classic, with veining that makes every top unique. It is porous: seal it periodically and wipe spills promptly, or it will record them.
- Quartz / engineered stone — consistent color, non-porous, no sealing, and forgiving of busy households.
- Ceramic and solid-surface tops — often integrated with the sink as one piece; smooth, easy to clean, and common on compact and floating models.
- Sink types — undermount basins maximize counter space and wipe-down ease; integrated tops eliminate seams; vessel sinks add height, which matters if the vanity is already tall.
Step 8 — Faucet spacing comes before the faucet
Countertops are drilled for a specific faucet configuration: single-hole, 4-inch centerset, or 8-inch widespread, and some tops are undrilled for wall-mounted faucets. The drilling for your exact size is stated on the product page — check it before buying a faucet, not after. Faucets and drains are sold separately unless the page states otherwise. Our size guides cover faucet fit per category, including the 36-inch sink and faucet guide.
Step 9 — Storage: drawers, doors, and plumbing
Drawers organize a bathroom better than doors, but the top drawer of almost every vanity is a U-shaped cut-out that wraps the drain — that is normal, not lost space. Doors with an interior shelf suit tall bottles and cleaning supplies. Count what you actually store: daily items for each user, tall bottles, towels if there is no linen closet. The storage layout for every size of every design is described on its product page, because it often changes between sizes of the same model.
Step 10 — Finish and style
White vanities remain the safest long-term choice — bright in windowless rooms and easy to coordinate — while black vanities anchor modern schemes and show water spots more honestly. Wood tones (oak, walnut) bring warmth and hide minor wear gracefully. Hardware finish is part of the design: several of our models pair specific hardware with specific finishes, and the product page photos show the exact pairing you will receive.
Step 11 — Budget the whole job, not just the vanity
The vanity's price is one line of the real cost. Budget also for: the faucet and drain (usually separate), delivery service level where applicable, installation labor, possible plumbing adjustment if the new drain position differs, and a mirror if the design does not include one. Our Shipping & Delivery Policy explains freight delivery and inspection, and our Returns & Refund Policy gives you 90 days from delivery if the vanity turns out to be wrong for the room — provided it stays unused, uninstalled, and in its original packaging, which is one more reason to inspect and measure before the plumber arrives, not after.
Pre-order checklist
- Wall width, depth limit, and drain position measured and written down
- Delivery path (doors, turns, stairs) measured
- Width chosen, single vs double decided against real morning routines
- Floating only if the wall has studs or blocking for it
- Depth checked against door swing and walkway
- Top included or cabinet-only — confirmed on the product page
- Faucet spacing for your size noted; faucet not yet bought if spacing is unconfirmed
- What is included (top, sink, backsplash, hardware) read on the product page for your exact size and finish
- Delivery inspection steps read — you will need 10 unhurried minutes when the truck arrives
Still deciding between two sizes or styles? Our FAQs answer the practical questions, and you can reach us through the Contact page with your measurements for a fit check against a specific model's specifications.
