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Custom vs. Prefabricated Bathroom Vanities: What $900 Buys, What $4,000 Buys, and the Middle Nobody Mentions
Bathroom Vanities
Custom vs. Prefabricated Bathroom Vanities
A bathroom vanity is a small kitchen cabinet that gets wet every day, and the prefab-versus-custom question is the same one as for kitchens with one difference: the room is small, the walls are close, and a cabinet that is 2 in. too narrow or 1 in. too deep is a problem you look at every morning. Here is what each option buys and which bathrooms need which.
The three options, priced
| Prefab (big-box, online) | Semi-custom (shop line, modified) | Custom (built for the room) | |
|---|---|---|---|
| 36 in. single, cabinet only | $300 to $1,100 | $1,100 to $2,200 | $2,000 to $4,000 |
| With a quartz top and sink | $600 to $1,800 (top often included) | $1,900 to $3,300 | $3,000 to $5,500 |
| 60 in. double, with top | $1,200 to $3,200 | $3,000 to $5,500 | $5,000 to $9,000 |
| Widths | 24, 30, 36, 48, 60, 72 in. | 3 in. steps, some to the inch | Any, to 1/8 in. |
| Depth | 18 to 21 in., fixed | 18, 21, 24 in. | Any; 16 in. for a tight room |
| Height | 31 to 35 in., fixed | Several | Any |
| Lead time | Same day to 2 weeks | 3 to 6 weeks | 5 to 10 weeks |
| Finish choices | Six to ten colours | The shop’s door and colour range | Anything, including matching the kitchen |
Those figures sit inside the ranges on the vanity cost page, and the calculator prices all three grades installed.
What prefab is
A vanity built in a factory, usually overseas, flat-packed or assembled, sold through the big-box stores, the online retailers and the bathroom showrooms. The good ones (and there are good ones now, at $800 to $1,500) have a plywood or decent particleboard box, soft-close drawers on undermount runners, a painted or thermofoil door, and a quartz or marble top with an undermount ceramic sink already mounted and the faucet holes drilled. The bad ones, at $300 to $500, have a 1/2 in. particleboard box with a paper-thin melamine face, a hardboard back, side-mount runners, and a cultured marble top with the sink moulded in. Both look the same in the photo.
The limits of prefab are not quality; they are size and water. Sizes are what they are, and a 36 in. vanity in a 37-1/2 in. alcove leaves a 3/4 in. gap each side that collects toothbrushes. Water: the cheap boxes are particleboard with a melamine skin, and the first supply line that drips, or the first time the toe kick gets mopped, the bottom swells. A $400 vanity in a kids’ bathroom is often a $400 vanity twice.
What custom is
A cabinet shop builds the box to the room: the width to the 1/8 in., the depth to clear the door swing, the height for the person using it, the drawers arranged around the plumbing instead of the plumbing dictating the drawers, and the door style and colour to match whatever else is in the house, including the kitchen. The box is 3/4 in. plywood or a good furniture-grade board, the drawers are dovetailed, the runners and hinges are the brands on the quality checklist, and the finish is sprayed in the shop. It takes six to ten weeks and the price starts where good prefab stops.
Custom is the only route when: the alcove is an odd width, the room needs a vanity shallower than 18 in., you want a specific height, the plumbing comes through the floor in a spot that kills every stock drawer layout, you want a vanity that matches the kitchen cabinets, or you want a 66 in. or 84 in. double that no catalogue makes. It is a luxury when the room is a standard 60 in. wide and a stock 60 in. double fits.
The middle: semi-custom, and the shop that sells it
Most Ontario kitchen cabinet shops run a vanity line off the same boxes and doors as their kitchens, and they will modify it: a 33 in. width instead of 36, a 19 in. depth, a drawer stack moved to clear the drain, a toe kick height to match the tile. It costs more than prefab and much less than full custom, it arrives in four to six weeks, and it comes with the shop’s installer. Nobody advertises it because it is not a catalogue product; you get it by walking into a kitchen shop and asking what they do for bathrooms. If you are doing a kitchen, it is the obvious answer for the bathroom at the same time, and most shops will price the vanity as an add-on to the kitchen order. The stock vs. semi-custom vs. custom page explains the grades for kitchens, and bathrooms work the same way.
How to tell a good prefab from a bad one
- Pull a drawer out and look underneath. Undermount runners with a brand, a plywood or solid-wood drawer box: good. White epoxy side runners and a stapled particleboard box: cheap.
- Push on the back panel. A real panel, 1/4 in. or better, glued in: good. A sheet of hardboard stapled on: cheap, and it is what holds the box square.
- Look at the bottom panel edge, inside the cabinet. Raw particleboard is where water goes in. Sealed, banded or plywood is better.
- Check whether the top is stone or “cultured marble” (resin with a gelcoat). The resin tops are fine until a hot curling iron sits on them.
- Check the drain cut-out. A good prefab has a notched top drawer or a U-shaped drawer around the trap. A bad one has a top drawer that is a false front, which is a drawer you paid for and did not get.
- Look at the finish on the edge of a door. Thin paint over MDF with a fuzzy edge chips at the first bump; a proper sprayed finish does not.
Which one for which bathroom
Powder room
Prefab, 24 to 30 in., and spend on the faucet and the mirror. Nobody leans on a powder room vanity and it rarely gets wet. A good prefab is the right money here.
Kids’ or main-floor family bathroom
Good prefab ($800 to $1,500) or semi-custom. This is the one that gets water on the floor every night; the box material matters more than the door style.
Ensuite
Semi-custom or custom, usually a double, and the top is where the money goes. If the kitchen is custom and the ensuite is visible from the bedroom, matching it is worth the extra.
Odd room
A 41 in. alcove, a vanity under a sloped ceiling, a door that swings into the corner: custom or semi-custom, because a prefab with 2 in. fillers each side looks like what it is.
Rental or flip
Prefab, with a stone top rather than cultured marble, because the top is what the photos show. $700 to $1,200 and done.
Accessible
Custom or semi-custom: a 34 in. height, a knee space, a shallow depth. The catalogue does not have it.
Questions people ask
Are custom vanities worth it?
When the room is an odd size, needs a non-standard depth or height, or has to match other cabinetry, yes; nothing else solves those. In a standard 36 or 60 in. space with a good prefab available, the extra $1,500 to $3,000 is for the box material and the finish, and it is a preference.
How much is a custom bathroom vanity in Ontario?
$2,000 to $4,000 for a 36 in. single cabinet, $5,000 to $9,000 for a 60 in. double with a stone top, before install and HST. The top is a third to a half of it.
Are big-box vanities good quality?
At $800 and up, often yes: plywood box, undermount runners, stone top with the sink mounted. Under $500, the box is thin particleboard and the water finds it. Pull a drawer and push the back panel in the store.
Can a kitchen cabinet shop make a bathroom vanity?
Yes, and most do, from their kitchen line, modified to the room. It is the semi-custom middle and the best value for an odd-sized bathroom.
How long does a custom vanity take?
Five to ten weeks from a shop, three to six for a modified line, same day to two weeks for prefab. The top adds a week after templating if it is separate.
The rule
Standard alcove, standard height: good prefab. Odd room, or matching the kitchen: custom, or the kitchen shop’s semi-custom line. In every case the box material decides how it looks in year five, not the door.
