7 Factors That Actually Drive Bathroom Vanity Cost

Why do bathroom vanity quotes vary so much?

A vanity looks like a simple purchase — a cabinet, a top, a sink — but the price for what looks like a similar piece can range from a few hundred dollars to several thousand. This Old House (2026) prices professional replacement labor alone at $665–$3,300, which already tells you the labor side has real range before a single material choice is made.

The difference almost always comes down to a short list of factors: whether the vanity is prefabricated or custom-built, how wide it is and whether it has one sink or two, what the countertop is made of, and what kind of sink sits in it. Below is where the money actually goes, in roughly the order most homeowners decide it.

1. Prefabricated vs. custom construction

This is usually the single biggest swing on a vanity quote. This Old House prices prefabricated vanities at $100–$2,600, while custom-built cabinets run $500–$2,800 — before the $200–$1,000 installation fee that custom work typically adds on top. A custom vanity is essentially double the cost of a prefab one for a comparable size, because it is built to order rather than pulled from a standard line.

That premium buys exact-fit dimensions, a choice of wood species and finish, and drawer or door configurations that a stock vanity cannot offer. For a straightforward guest bath or hall bath where a standard width fits the space, a quality prefab vanity gets most of the look for a fraction of the cost.

2. Vanity width and single vs. double sink

Size scales cost in a fairly direct way. This Old House's size-based pricing shows a 2.5-foot single vanity at $100–$500, a 4-foot single at $400–$700, and a 5-foot single climbing to $500–$1,800 as the piece gets more substantial. Cross into double-sink territory and a 6-foot double vanity runs $600–$2,200 — not simply double the single-sink price, but close to it, since a second sink means a second cutout, a second set of supply lines, and more cabinet to build.

3. Countertop material

This is where a vanity quote can swing the most for a footprint that never changes. This Old House prices laminate at roughly $53 per square foot, granite from $5–$60, solid surface at $42–$65, cultured marble around $65, porcelain or ceramic tile at $6.50–$19, and concrete reaching $65–$135 per square foot — one of the widest ranges of any single line item in this article.

Because a standard vanity top is only a few square feet, the dollar difference between laminate and a mid-range stone or solid surface top is often smaller than homeowners expect — but concrete and high-end natural stone can genuinely double the top's cost. For the fuller comparison between the two most common upgrade choices, see our quartz vs. granite bathroom countertops breakdown.

4. Sink type

Sink style changes both the fixture cost and the labor behind it. Fixr (2026) prices an installed undermount sink at $250–$1,600, noting it "require[s] more work to secure the sink to the underside of the countertop before the plumbing can be installed" — a labor step a drop-in sink skips entirely. Drop-in (self-rimming) sinks install fastest and cheapest, at $200–$700 installed, since the job is largely "setting the sink in place and attaching the drain and P-trap."

Vessel sinks run $200–$1,500 installed, but Fixr notes they typically need a specialized vessel faucet and a code-required grid drain in many states — added hardware, not just a different bowl shape. Pedestal and wall-mount sinks run higher still, at $400–$1,200 and $400–$1,600 respectively, because both require wall bracing to support the sink's weight without a cabinet underneath — several hours of labor versus roughly one hour for a countertop-supported sink.

5. Faucets, hardware, and backsplash

The smaller line items add up, too. This Old House prices faucets across a wide $12–$1,600 range, and a tile backsplash at $1.50–$30 per square foot depending on material. Neither is usually the deciding factor in a vanity budget, but a higher-end faucet or a stone backsplash is where an otherwise mid-range vanity picks up a noticeably higher-end look for a comparatively small added cost.

6. Wall-mounted vs. floor-mounted installation

A floating, wall-mounted vanity — increasingly common in the design photos homeowners bring to a consult — requires blocking inside the wall to carry its weight, which a floor-mounted cabinet does not need. That added framing work is a labor cost that does not show up in the vanity's sticker price, which is part of why two vanities that look similar in a showroom can price differently once installation is quoted.

7. Whether the plumbing stays put

This Old House's $665–$3,300 labor range for a full replacement includes plumbing work, and that range widens further if the new vanity moves the sink location rather than reusing the existing supply and drain lines. Keeping the vanity in its existing footprint is the single easiest way to keep this line item toward the low end — for what actually happens when a sink does move, see our guide on bathroom plumbing relocation cost.

Where the vanity sits in the overall remodel budget

Fixr's 2026 cost data puts vanity and shelving at roughly 25% of a typical bathroom remodel's total cost, in a $1,500–$4,500 typical range for a $12,000 average project — tied with shower/tub work as the largest single category. This Old House separately prices cabinetry installation, including removal of the old vanity, at an average of $2,929 for a full remodel. Both figures point to the same conclusion: the vanity is rarely a minor line item, which is exactly why the factors above are worth getting right before you commit to a spec.

How to use this when comparing vanity quotes

If two vanity quotes for a similar-size piece come back at very different totals, walk through the list above: is one prefab and one custom? Is the countertop material different? Does one sink need extra hardware the other does not? Most of the gap will trace back to one or two of these factors rather than a mystery markup.

For style direction once your budget range is set, see our bathroom vanity ideas and our full bathroom vanity buying guide. When you are ready for a number specific to your bathroom, a full bathroom remodel quote will price the vanity alongside everything else rather than in isolation.