A new vanity is one of the fastest ways to change how a bathroom feels — and one of the most confusing things to get a straight price on. Search around and you’ll see numbers anywhere from $300 to $10,000, which tells you almost nothing about what your bathroom will actually cost.
Here’s what vanity replacement runs in the Seattle area in 2026, what moves the price the most, and when a “simple swap” turns into a bigger plumbing job.
Bathroom Vanity Replacement Cost in Seattle: 2026 Estimates
Estimates below are for a professionally installed vanity in the Seattle area, unit plus labor.
| Vanity type | Estimated installed cost |
|---|---|
| Stock single vanity (24″–36″) | $800 – $1,800 |
| Semi-custom single vanity, stone top | $1,800 – $3,500 |
| Custom single vanity | $3,000 – $6,000+ |
| Double vanity (stock/semi-custom) | $2,500 – $5,500 |
| Converting single to double vanity | $3,500 – $7,000+ |
| Labor only (swap, same footprint) | $665 – $1,800 |
These are estimates. The biggest swing factor by far is whether the plumbing moves — more on that below.
The Real Cost Driver: Does the Plumbing Move?
If your new vanity uses the same sink location, drain, and water lines as the old one, this is a straightforward job: disconnect, remove old unit, set new cabinet, reconnect. A day, sometimes less.
If you’re widening the vanity, switching from single to double sink, or shifting it to a different wall, the plumber has to relocate supply lines and drain — and that’s where a $1,500 job turns into a $4,000 one. It’s not the cabinet that costs more, it’s the wall you have to open up.
Before you fall for a bargain quote, ask directly: does this price assume the plumbing stays where it is?
Stock vs. Semi-Custom vs. Custom
Stock vanities ($300–$1,800 for the unit) come in standard widths, usually 24″ to 60″, and ship pre-assembled or flat-pack from a big-box store or supplier. Fine quality for the price, limited sizing.
Semi-custom ($800–$3,500) gets you a choice of finish, door style, and drawer configuration on a standard cabinet box — the sweet spot for most Seattle remodels, especially with a stone or quartz top.
Custom ($3,000–$10,000+) is built to your exact dimensions and finish. Worth it for an odd-shaped bathroom, a primary suite that should match built-in cabinetry, or a double vanity where off-the-shelf widths just don’t fit the wall.
Single vs. Double Vanity
A double vanity roughly doubles the cabinet and countertop cost, and it usually requires a second set of drain and supply lines — which means more plumbing labor even in a same-footprint swap. Converting an existing single-sink vanity to double is one of the more expensive small upgrades in a bathroom, typically $3,500 to $7,000+, because you’re both buying a wider unit and paying to run new plumbing to the second sink.
If two people share the bathroom every morning, it’s worth pricing. If it’s a guest bath, a single vanity almost always makes more sense.
What Else Affects the Price
- Countertop material. Laminate is the cheapest option; quartz and granite add real cost but hold up far better to Seattle’s daily humidity and steam.
- Faucet and hardware upgrades. Swapping in a higher-end faucet, new drawer pulls, or an undermount sink instead of a drop-in all add to the final number.
- Old vanity removal and disposal. Usually included in labor quotes, but confirm it — hauling a heavy stone-top vanity out of a second-floor bathroom is real work.
- Wall and floor repair. Removing an old vanity sometimes uncovers water damage or unfinished flooring underneath. Common in older Seattle homes, and worth budgeting a few hundred dollars of contingency for.
- Lighting and mirror changes. Not required, but if you’re already opening up the wall for plumbing, it’s the cheapest time to add or move an outlet or light fixture.
Do You Need a Permit?
In Seattle, minor cosmetic work under $6,000 (labor and materials combined, in any 6-month period) generally doesn’t require a permit — a straight vanity swap with no plumbing changes usually falls under this.
Once you relocate the sink, add a second sink, or move water supply and drain lines, you need a plumbing permit from SDCI. Base plumbing permit fees run around $165, with total permit costs from $200 to over $1,000 depending on scope. A licensed contractor pulls this for you and knows when it’s actually required — don’t take a contractor’s word that “we don’t need one” if the scope includes moving plumbing.
Vanity Replacement vs. Full Bathroom Remodel
A new vanity alone is a great way to refresh a bathroom that’s otherwise in good shape — updated look, better storage, new countertop, without touching tile, shower, or flooring. If your tile is dated, the tub or shower needs work too, or the layout doesn’t work for your household, a vanity swap by itself won’t fix the real problem, and you’re better off budgeting for a fuller remodel. We’ve written a full breakdown of bathroom remodel cost in Seattle and a deeper look at master bathroom remodel cost if you’re weighing the bigger project.
Ready for a New Vanity?
We install vanities across Seattle, the Eastside, and Snohomish County — as standalone upgrades and as part of larger bathroom remodels. We’ll tell you upfront whether your plumbing needs to move and what that adds to the job, so the quote you get is the number you actually pay. Call 206-851-4233 or request an estimate.
FAQ
How much does it cost to replace a bathroom vanity in Seattle?
Plan on roughly $800 to $1,800 installed for a stock single vanity, $1,800 to $3,500 for semi-custom with a stone top, and $3,000 to $6,000+ for custom. These are estimates — plumbing changes, countertop material, and vanity size all move the number.
Is it cheaper to keep the same vanity location?
Yes, significantly. Keeping the same sink location and plumbing connections keeps labor in the $665–$1,800 range. Moving the plumbing for a new location or a second sink adds real cost — often $1,500–$3,000+ extra.
Do I need a permit to replace a bathroom vanity in Seattle?
Usually not, if it’s a straight swap with no plumbing relocation and the job is under $6,000. If you’re relocating the sink or adding a second one, you need a plumbing permit from SDCI.
How much more does a double vanity cost than a single?
Converting a single vanity to a double typically runs $3,500 to $7,000+, since you’re paying for a wider unit plus new plumbing for the second sink. A double vanity from scratch is roughly double a single vanity’s material cost.
Should I replace just the vanity or remodel the whole bathroom?
If the rest of the bathroom (tile, shower, flooring) is in good shape, a vanity swap alone is a smart, contained upgrade. If other elements are dated or not working for your household, it’s usually more cost-effective to plan a fuller remodel rather than fixing the room piece by piece.
