Bathroom vanity installation costs $400 to $1,600 in labor for a standard replacement, plus $300 to $3,500 for the vanity and top. A like for like swap in the same footprint is a half day job. Changing the width, going to a floating vanity, or moving the supply and drain lines is what pushes the total past $2,500.
The labor number surprises people because a vanity looks like furniture. It is not. It is a plumbing fixture with a cabinet around it, and the price is set by what happens behind it.
What the job costs, by scenario
| Scenario | Labor | Total with vanity and top |
|---|---|---|
| Like for like swap, same width | $400 to $700 | $700 to $2,500 |
| New width, same wall, plumbing stays | $600 to $1,100 | $1,200 to $4,000 |
| Floating or wall mounted vanity | $800 to $1,600 | $1,800 to $5,500 |
| Single to double sink conversion | $1,200 to $2,500 | $2,500 to $7,000 |
| Vanity moved to a different wall | $2,000 to $4,500 | $3,500 to $9,000 |
The jump between rows one and three is not the vanity. It is blocking inside the wall. A floating vanity has to hang off framing that can carry the load plus a person leaning on it, which means opening the wall, adding blocking and closing it back up.
Where the money actually goes
The vanity. Entry level ready to assemble units start around $300. Solid wood construction with dovetailed drawers and soft close hardware sits in the $800 to $2,000 range. Custom or premium lines run higher.
The top. A cultured marble integrated top is the budget option. Quartz and granite tops run $300 to $1,200 for a standard single vanity, more for a double. Undermount sinks cost more to fabricate than drop ins because the cutout is polished.
The faucet and drain. A new faucet is almost always worth doing at the same time, because the labor is already there. Reusing an old faucet on a new vanity is the classic false economy: the finish rarely matches and the supply lines are the wrong length anyway.
The wall behind it. Older vanities frequently hide unpainted drywall, tile that stopped at the old vanity’s edge, or a patch of damage from a slow supply leak. Budget for the possibility.
What turns a half day into three days
- Shutoff valves that are corroded and will not close, which means shutting off the house
- Galvanized supply lines, common in Montgomery County homes built before 1960
- A drain that sits too high or too low for the new cabinet’s interior
- Tile that runs under the old vanity and stops, leaving a bare strip
- No blocking in the wall for a floating unit
None of these are exotic. On homes from the 1950s and 1960s in Silver Spring, Bethesda and Kensington, at least one of them shows up regularly.
Choosing a size that fits the room, not the picture
Standard vanity widths are 24, 30, 36, 48 and 60 inches. Two rules save more regret than any style decision:
- Leave at least 30 inches of clear floor space in front of the vanity, and check that the door still swings
- On a double vanity, 60 inches is the practical minimum, and each sink still ends up with modest counter space. If the room only allows 60 inches, a single sink with a long run of counter is usually the better daily experience
We carry Hardware Resources and Fabuwood vanities across these widths, and the showroom has them installed rather than stacked, which is the only way to judge drawer depth against a plumbing trap. See what we stock on our bathroom vanities in Maryland page.
If the vanity is part of a larger bath project, the full bathroom remodel cost breakdown sets expectations for the rest, and our sister company can price the plumbing and tile work.
Frequently asked questions
How much does it cost to install a bathroom vanity?
Labor runs $400 to $1,600 depending on whether the plumbing stays put. A like for like replacement in the same footprint is at the low end. A floating vanity or a single to double conversion is at the high end.
How long does it take to replace a bathroom vanity?
A straight swap is three to five hours. Changing the width, converting to a double sink, or wall mounting the unit turns it into a one to three day job because of plumbing and wall work.
Is a floating vanity more expensive to install?
Yes, typically $300 to $700 more in labor, because the wall has to be opened to add blocking that carries the cabinet plus load. The payoff is easier floor cleaning and a larger visual sense of the room.
Do I need a permit to replace a bathroom vanity?
A like for like replacement generally does not require a permit. Moving supply or drain lines usually does. Confirm current requirements with the Montgomery County Department of Permitting Services before work starts.
Should I replace the faucet at the same time?
Almost always. The labor is already on site, the supply lines are already disconnected, and matching an old faucet finish to a new top is harder than it sounds.
Bring the room dimensions. We will show you 24 through 60 inch vanities installed, with the drawer interiors open, so you can see what a plumbing trap actually costs you in storage. Call (301) 939-0009 or book a showroom visit.