Bathroom Vanity Installation Cost: A 2026 Replacement Guide

How much does it cost to install or replace a bathroom vanity?

In 2026, most homeowners spend roughly $300 to $3,800 all in for a new bathroom vanity and its installation, with a national average around $1,500. Labor alone for a basic, like-for-like install runs about $150 to $700. The single biggest thing that moves your total is whether the plumbing has to move.

These are national averages, and your local labor market, the size of the vanity, and the complexity of the job will shift the number in either direction. This ARIEL Bath guide breaks the cost into its parts so you can budget before you buy.

What affects the cost most

A few factors drive most of the difference between a few hundred dollars and several thousand:

• Plumbing: The largest swing. Keeping the new vanity where the old one sat, on the same water lines, is the cheapest path. Moving the sink is the most common reason a simple swap becomes a four-figure job.

• Size and configuration: A double vanity costs close to twice a single, because it is two of nearly everything: two sinks, two faucets, more countertop.

• Countertop material and fixtures: The top, sink, and faucet you choose add to the total.

• Removal and disposal of the old vanity.

• Prefab vs custom, and your local labor rates.

The cost broken down

The cost of a vanity project always has two parts: the unit itself and the labor. Here is where the labor and related costs land in 2026, as national ranges, compiled from reputable industry sources and the hands-on expertise of the ARIEL Bath team.

1. Labor to install

A basic, like-for-like installation runs about $150 to $700 in labor. 

According to Homewyse, the national average for installing a vanity is roughly $576 to $871. A plumber charges about $45 to $150 per hour for any work involving water lines or drains, and a handyman charges about $50 to $80 per hour.

2. Removing and disposing of the old vanity

Removing and hauling away the old vanity runs about $150 to $500. A heavy stone top pushes this toward the higher end.

3. Plumbing

If the plumbing stays where it is, this cost is minimal. If the sink has to move, installing or relocating plumbing lines runs about $400 to $2,200, averaging around $1,500, because it usually means opening the wall or floor and often a permit.

Property Blueprint's 2026 guide also notes that, converting a single vanity to a double runs about $800 to $3,000 in materials and labor, since it adds a second set of connections.

4. Countertop, sink, and faucet

A new sink and faucet installed runs about $600 to $2,000, and a countertop is a separate cost when you buy a cabinet on its own.

This is where an all-in vanity changes the math: an ARIEL Bath vanity includes the undermount sink, quartz or marble countertop, and a 4-inch backsplash, so those are not separate line items on top of the cabinet.

5. Full replacement

Putting it together, a full replacement, including removing the old vanity, reconnecting plumbing, and installing the new cabinet and top, runs about $665 to $3,300 in labor.

DIY vs hiring a pro

A basic, like-for-like swap is the most DIY-friendly version of this project: if the new vanity sits where the old one did and the plumbing does not move, many homeowners can do it themselves and save the labor cost. 

The moment water lines or drains have to move, hire a plumber, both to meet code and to avoid leaks behind a finished wall. If you want to weigh the work involved, see our step-by-step guide.

Cost by scenario

Use these 2026 national ranges to find the scenario closest to your project. Ranges are for labor and related work, not the vanity unit, and vary by location.

 

For context, the all-in total (unit plus installation) sits around $300 to $3,800 for most homeowners, averaging near $1,500.

How to keep the cost down

A few choices keep the budget in check:

• Keep the plumbing where it is: A like-for-like swap avoids the largest cost in the whole project.

• Buy an all-in vanity: A vanity that includes the sink, countertop, and backsplash removes those separate costs. ARIEL Bath vanities include all three, and ship free with no hidden fees.

• Measure first: Confirming the size before you order avoids returns and delays. See our vanity sizing guide.

• Check current pricing and sales: ARIEL Bath's unit pricing is on each product page, and seasonal sales can lower it further.

Conclusion

The cost of installing or replacing a bathroom vanity comes down to the unit, the labor, and above all whether the plumbing moves. A like-for-like swap on existing plumbing keeps you at the low end, while relocating the sink or adding a second one moves you toward the high end. 

Choosing a vanity that includes the sink, countertop, and backsplash, and keeping the plumbing in place, are the two clearest ways to protect your budget. Once you know your budget and scenario, you can compare vanities and collections directly.