Updated on: March 5th, 2026
You’re at the point where you realize that you don’t need two sinks in your bathroom. Maybe you’re the only person who uses this bathroom, or you’re just in harmony with whoever you share the bathroom sink with, and only one sink is needed.
You want to downsize, but you’re not sure that it’s possible. We’re here to tell you that it is. Changing a double sink to a single sink is possible without a total plumbing overhaul.
Can You Change a Double Sink to a Single Sink?
Yes, it is entirely possible and often recommended for homeowners looking to reclaim counter space. To change plumbing from a double sink to a single, a professional typically merges the two existing drainage lines into a centered P-trap and properly caps the unused water supply lines. While the plumbing logic is straightforward, ensuring a leak-free seal and proper venting is key to a successful conversion.
The Process of Converting to a Single
So first, let’s talk about the process. What does it actually take to change double sink to single sink setups?
The transition from a double to a single is actually pretty simple. Unless your set-up is super unique, your sinks should join within the cabinet. This means they end up going into the same drainage pipe. In other circumstances, each sink can have its own drainage system. If this is the case for you, our professionals can perform the necessary work to merge your internal plumbing before they convert your double-sink setup into a single one.
When changing a double sink to single basins, our team focuses on:
- Merging the Drains: We reconfigure the “continuous waste” setup to ensure your new single-sink drains properly.
- Capping Supply Lines: We don’t just “turn off” the second faucet; we properly cap the hot and cold lines to prevent leaks behind your new vanity.
The Benefits of Hiring a Professional
Now that we’ve touched on how this can be done, we’d like to discuss why it’s so important for you to go with a professional when you convert a double vanity to single fixtures.
Your Plumbing is Intricate
Your home’s plumbing is intricate. Taking care of your home’s plumbing now means that you’re going to prevent future plumbing problems. We know what it’s like to want to save a little money. Plumbing services can be an investment. Cutting corners isn’t as beneficial as it might seem.
Yes, you might be able to save a little money upfront, but changing a double vanity to a single setup requires precision to ensure the venting is correct. You need plumbing care that prioritizes longevity.
Prevents Water Damage
The last thing you want is water damage in your home. If your lines aren’t capped airtight, you risk slow leaks that can rot your subfloor. Water damage can pose health hazards and become a major problem for your home’s structure. That’s why we care about providing high-quality work, never cutting corners, and making sure your plumbing work is done with care.
Safety and Health
Plumbing problems can quickly become a safety problem. If your home incurs water damage, it can lead to bigger issues with mold and mildew. You want to protect your personal health and that of your family members. We’re the team that can make this a reality through the care of our professionals.
Refresh Your Bathroom Plumbing
Contact Modern Plumbing Industries, Inc. when you’re ready to renovate. Since this project often requires reconfiguring or capping your existing water lines, it’s the perfect time to have a professional ensure your entire system is in top shape.
Whether you are changing a double sink to a single for more counter space or need emergency plumbing in Orlando, FL, our team is here to help.