How Much Does It Cost to Install or Replace a Sink Drain?

By Shelley Frost

December 28, 2025

Is your sink drain looking worse for wear? Or maybe you're noticing a funky odor or slow draining in your sink. Whether it's your kitchen or bathroom, having functioning drains is a must.

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Can a Sink Drain Be Replaced? How?

Yes, it's possible for a sink drain to be replaced. This is often done if the drain is old, damaged or worn. You might replace it when you're renovating your bathroom or installing a new faucet and want the pop-up portion of the drain to match the new hardware.

You might also replace a sink drain if it's heavily clogged. While there are other ways to clear the drain of built-up gunk, you might choose to replace it if it's a particularly tough clog or the drain is old anyway.

The process involves some minor plumbing skills. Sink drain components are relatively easy to access, though, which makes the installation straightforward. Start by releasing the pop-up on a bathroom sink by removing the pivot rod from the pipe underneath the sink. It's a flat metal piece at the back of the pipe. You'll unscrew a nut and pull it out from the pipe.

You'll need to remove the P-trap underneath the sink, being careful to place a bucket underneath to catch the water. The P-trap is the curved pipe section under your sink. You can replace the P-trap if it's clogged or in poor condition. Then, unscrew and remove the drain assembly.

Before putting in the new one, clean the area and apply plumber's putty around the drain. Then you can insert the new assembly per the directions and reconnect the P-trap.

How Do You Know You Need to Replace a Sink Drain?

It can be difficult to know when you need to replace a sink drain. If it's still functioning correctly, you might choose to replace it if you notice signs of wear, such as discoloration or rust.

Signs you might need a new sink drain due to functional issues include:

Slow drains
Persistent clogs
Bad odors you can't get rid of
Gurgling
Severe corrosion
Leaking you can't repair

Calling a plumber to assess the situation can help you decide if it's time for a replacement. They may be able to perform a drain pipe repair. Plumbers use professional drain-cleaning tools that can help eliminate clogs and improve drainage. However, the plumber might discover damage that requires a replacement.

How Much Does It Cost to Replace a Bathroom Sink Drain?

The sink drain replacement cost for a bathroom sink can vary depending on the area. On average, a plumber charges between $100 and $350 (CAD 139 and CAD 485) for a bathroom drain sink replacement, according to HomeGuide.

To purchase the components to replace a bathroom sink drain, you'll likely spend between $50 and $65 (CAD 69 and CAD 90). However, the material cost could vary depending on the brand and finish you choose for the pop-up portion of the drain assembly. If you feel comfortable performing the plumbing work yourself, you can save the labor costs of hiring a plumber. However, keep in mind that you may still have to pay a plumber if you make a mistake during the installation.

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What Is the Average Kitchen Sink Drain Replacement Cost?

You can expect the average kitchen sink drain replacement cost to be similar to that of a bathroom sink. The total labor cost will likely average between $100 and $350 (CAD 139 and CAD 485), depending on the rate of the plumber and how long the job takes. If you have two kitchen sink drains to replace, the process could take longer, which would increase the costs if you hire a professional plumber.

The average hourly rate for a plumber is between $45 and $150 (CAD 64 and CAD 208), accoding to data from HomeGuide. However, some plumbing companies charge you a minimum amount just to show up, even if the project doesn't take very long. That amount could be anywhere from $50 to $200 (CAD 69 to CAD 277) or more.

How Long Does Kitchen Sink Drain Installation Take?

Kitchen sink drain replacement typically takes 1 to 2 hours to complete. However, that can vary depending on the complexity of the situation. A severely damaged drain could take longer to remove, or a tight under-sink area could make the installation process more difficult.

The time it takes also depends on experience. A highly experienced plumber will likely complete the job much faster than a homeowner with no previous plumbing experience. If you're doing the sink drain replacement yourself, allow for extra time in case you run into problems or need to search for answers to your installation questions.

All CAD conversions are based on the exchange rate on the date of publication.

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