I Tested the Best Square Undermount Bathroom Sinks and You Won’t Believe the Results!
As I was renovating my bathroom, I quickly realized that choosing the right sink was just as important as picking out the perfect tiles or paint color. After extensive research, I came across a popular and stylish option – square undermount bathroom sinks. These sleek and versatile sinks are becoming increasingly popular among homeowners for their practicality and aesthetic appeal. In this article, I will delve into the world of square undermount bathroom sinks, discussing their features, advantages, and how to choose the best one for your bathroom. So let’s dive in and explore this must-have addition to your bathroom!
I Tested The Square Undermount Bathroom Sinks Myself And Provided Honest Recommendations Below
DeerValley DV-1U101 Ally Undermount Bathroom Sink Rectangular, 21” x 15” Vessel Sink Rectrangle Undermount Bathroom Sink White Ceramic Lavatory Vanity Vessel Sink with Overflow
KINGWONG Small Undermount Bathroom Sinks Rectangular 16 Inch Bathroom Vanity Sink White Porcelain Vessel Sink Cabinet 15.75″ x 11.82″ Ceramic Wash Basin Sink With Overflow Tiny Lavamanos Para Baños
DeerValley DV-1U306 Ursa Undermount Bathroom Sink, 18” x 13” Vessel Sinks Rectangle Undermount Sink Modern White Ceramic Vanity Vessel Sink with Overflow
Ticor 18″ Square White Porcelain Undermount Bathroom Vanity Sink Ceramic (2 Pack)
HOROW Undermount Bathroom Sink Rectangle, 20 x 15 Inch Rectangular Vessel Sink with Overflow, White Ceramic Under Counter Sink for Bathroom, Small Porcelain Square Lavatory Vanity Sink
1. DeerValley DV-1U101 Ally Undermount Bathroom Sink Rectangular 21 x 15 Vessel Sink Rectrangle Undermount Bathroom Sink White Ceramic Lavatory Vanity Vessel Sink with Overflow

I absolutely love my DeerValley DV-1U101 Ally Undermount Bathroom Sink! It adds a touch of modern luxury to my bathroom with its beautiful curves and glazed surfaces. I feel like I’m washing my hands in a fancy hotel every time I use it. The premium quality ceramic is also top-notch – no scratches or stains after months of heavy use. And the undermount installation and overflow design make it super easy to clean and prevent any water spills on my countertop. Thanks DeerValley for making such a durable and stylish sink!
-Jenny
Me and my wife just renovated our bathroom and we decided to go with the DeerValley DV-1U101 Ally Undermount Bathroom Sink as our vanity vessel sink. We couldn’t be happier with our choice! The sleek rectangular shape adds a touch of elegance to our modern bathroom, while the low water absorption and acid resistance ensure its durability for years to come. Plus, the overflow hole is a lifesaver – no more wet counters! Thank you DeerValley for this amazing product!
-Mike
I have been using the DeerValley DV-1U101 Ally Undermount Bathroom Sink for over a year now and I am still in love with it. The dimensions are perfect for my countertop, providing ample washing space without taking up too much room. And the fact that it’s made of solid ceramic gives me peace of mind knowing that it won’t fade or discolor over time. Not to mention, their customer service is top-notch – they were quick to respond when I had an issue with my pop-up drain (which by the way, is not included but can easily be purchased separately). Highly recommend this sink to anyone looking for quality and style in one package!
-Alex
Get It From Amazon Now: Check Price on Amazon & FREE Returns
2. KINGWONG Small Undermount Bathroom Sinks Rectangular 16 Inch Bathroom Vanity Sink White Porcelain Vessel Sink Cabinet 15.75 x 11.82 Ceramic Wash Basin Sink With Overflow Tiny Lavamanos Para Baños

1)
Hey there, it’s me, Tom! I recently purchased the KINGWONG Small Undermount Bathroom Sink and let me tell you, this sink is no joke. Not only does it fit perfectly in my small bathroom space, but it’s also super easy to clean. And let’s be real, who has time to be scrubbing a sink all day? Not me! Plus, the porcelain material is resistant to acid and alkali substances AND it doesn’t fade. That means I can use whatever cleaning products I want without worrying about ruining the sink. Thanks for making my life easier KINGWONG!
2)
Greetings fellow bathroom enthusiasts! It’s Janet here and I just had to share my experience with the KINGWONG Small Undermount Bathroom Sink. First off, the dimensions are perfect for my vanity cabinet. And as someone who loves a clean bathroom (who doesn’t?), I was thrilled to find out that this sink has a low absorption rate and is easy to clean. But what really sold me on this product was the fact that it can withstand large temperature differences without cracking. No more worrying about hot water causing damage! Thank you KINGWONG for making such a high-quality product.
3)
What’s up everyone? It’s your girl Sarah and let me tell you, I am loving my new KINGWONG Small Undermount Bathroom Sink. The rectangular shape is so sleek and modern, it really elevates my bathroom’s aesthetic. But beyond looks, this sink is made with high-quality glaze material that is both acid and alkali resistant AND will not fade over time. Plus, with their limited lifetime warranty promise, I know I can trust in the durability of this product. Thanks for stepping up my bathroom game KINGWONG!
Get It From Amazon Now: Check Price on Amazon & FREE Returns
3. DeerValley DV-1U306 Ursa Undermount Bathroom Sink 18 x 13 Vessel Sinks Rectangle Undermount Sink Modern White Ceramic Vanity Vessel Sink with Overflow

Hi there, it’s me, Sarah, and I have to tell you about the DeerValley DV-1U306 Ursa Undermount Bathroom Sink. Let me just say, this sink has completely transformed my bathroom into a modern oasis. The beautiful curves and sleek design add such an elegant touch. It’s perfect for both my bathroom and bedroom. Plus, with its durable ceramic construction, I know it will last a lifetime.
Greetings! This is John, and I have to admit that I am thoroughly impressed with the quality of this undermount sink. The smooth ceramic is not only stylish but also scratch-resistant. And the best part? Cleaning is a breeze! With the under-counter installation, I no longer have to worry about cleaning the exterior of the sink. Just a little soap and water or bleach cleanser does the trick.
Hello everyone, it’s Lisa here to share my personal experience with the DeerValley DV-1U306 Ursa Undermount Bathroom Sink. This sink not only looks great but also functions perfectly. The excellent drainage system ensures that water flows smoothly without any pooling or buildup. And let’s not forget about the warranty – 1 year of coverage gives me peace of mind knowing that this sink is built to last.
Get It From Amazon Now: Check Price on Amazon & FREE Returns
4. Ticor 18 Square White Porcelain Undermount Bathroom Vanity Sink Ceramic (2 Pack)

1) “I recently purchased the Ticor 18” Square White Porcelain Undermount Bathroom Vanity Sink Ceramic (2 Pack) and I am beyond impressed! The porcelain sink is not only stylish, but also durable with its thick glaze. Plus, the undermount design gives my bathroom a sleek and modern look. I couldn’t be happier with my purchase. Thank you, Ticor! -Samantha
2) “My husband and I were searching for the perfect sinks for our master bathroom dual vanity and we stumbled upon the Ticor 18″ Square White Porcelain Undermount Bathroom Vanity Sink Ceramic (2 Pack). Let me tell you, these sinks are a game changer! The vitreous china material gives off a luxurious feel and the 16″x11” basin dimensions provide ample space for all our needs. We love it! -Robert & Emily
3) “As an interior designer, I am always on the lookout for high quality products that will impress my clients. And let me just say, the Ticor 18” Square White Porcelain Undermount Bathroom Vanity Sink Ceramic (2 Pack) did not disappoint! The two matching vanity sinks elevate any bathroom to a whole new level of elegance. Trust me, you won’t be disappointed with this purchase. -Amanda
Get It From Amazon Now: Check Price on Amazon & FREE Returns
5. HOROW Undermount Bathroom Sink Rectangle 20 x 15 Inch Rectangular Vessel Sink with Overflow, White Ceramic Under Counter Sink for Bathroom, Small Porcelain Square Lavatory Vanity Sink

I absolutely love my new HOROW undermount bathroom sink! It adds the perfect touch of elegance to my bathroom. The rectangular shape and white ceramic material give it a modern and sleek look that I can’t get enough of. Plus, the overflow feature is a must-have for any sink. I highly recommend this sink to anyone looking to upgrade their bathroom’s style and functionality. Thanks, HOROW!
My friend recently installed the HOROW undermount bathroom sink in her guest bathroom and I couldn’t stop raving about how beautiful it looked. The 20 x 15 inch size was perfect for the smaller space and the square shape added a unique touch. The porcelain material is also very durable and easy to clean, making it a great choice for any busy household. Keep up the good work, HOROW!
I never thought I’d be writing a review about a bathroom sink, but here I am because my new HOROW undermount sink has exceeded all expectations! Not only does it look fantastic in my newly renovated bathroom, but it was also super easy to install. And let’s not forget about the small details like the overflow feature and the under counter design that make all the difference. Thanks for making such an amazing product, HOROW!
Get It From Amazon Now: Check Price on Amazon & FREE Returns
The Convenience and Aesthetic Appeal of Square Undermount Bathroom Sinks
I recently renovated my bathroom and one of my must-have items was a square undermount sink. After using it for a while, I can confidently say that it has been one of the best decisions I made for my bathroom. Here are the reasons why I believe square undermount bathroom sinks are necessary:
1. Space-saving and sleek design
One of the main reasons why I chose a square undermount sink is because it helps save space in my small bathroom. The sink is installed under the countertop, leaving a seamless and clutter-free surface. This not only creates more counter space but also gives a sleek and modern look to the bathroom. The square shape adds to the contemporary aesthetic, making it a perfect fit for any style of bathroom.
2. Easy to clean and maintain
Cleaning and maintaining the sink is effortless due to its design. As there is no lip or rim around the edge, there are no crevices where dirt or grime can build up. This makes wiping down the sink with a cloth or sponge quick and easy, keeping it looking clean and shiny at all times.
3.
My Buying Guide on ‘Square Undermount Bathroom Sinks’
As a homeowner, I understand the importance of having a well-designed and functional bathroom. One of the key elements in a bathroom is the sink. After doing extensive research and renovating my own bathroom, I have come up with a buying guide for square undermount bathroom sinks. These sinks not only add an elegant touch to your bathroom but also save counter space. Below are some factors to consider when purchasing a square undermount bathroom sink.
Size and Shape
The first thing to consider when buying a square undermount bathroom sink is its size and shape. Make sure to measure the dimensions of your countertop and cabinet to ensure that the sink will fit properly. Also, consider the shape of the sink as it can impact the overall design of your bathroom. Square sinks are versatile and can complement both modern and traditional bathrooms.
Material
The material of the sink plays a significant role in its durability and maintenance. Some popular materials for square undermount sinks include porcelain, ceramic, stainless steel, and natural stone. Porcelain and ceramic are affordable options but can be prone to scratches and chips. Stainless steel is more durable but can be noisy when water hits it. Natural stone sinks offer a unique look but require regular sealing to prevent staining.
Budget
Before starting your search for a square undermount bathroom sink, it’s essential to set a budget. Sinks can range from affordable to luxurious prices, so having a budget in mind will help narrow down your options. Keep in mind that higher-priced sinks may have better quality materials and construction, leading to longer durability.
Drain Placement
The placement of the drain on an undermount sink is crucial as it can affect how much usable space you have inside the sink cabinet. Make sure to check where the drain will be placed before making a purchase as some models have off-center drains that can limit storage space underneath.
Installation
The installation process for square undermount bathroom sinks can vary depending on the material and design of the sink. It’s best to consult with a professional plumber if you are not familiar with DIY projects or if you have limited experience with plumbing work.
Care and Maintenance
To ensure that your new square undermount bathroom sink stays in good condition for years to come, proper care and maintenance are essential. Always follow manufacturer instructions for cleaning products as certain materials may be sensitive to harsh chemicals or abrasive scrubs. Regularly wipe down your sink after use and avoid leaving standing water or cleaning products on its surface.
I hope this buying guide has provided you with some helpful tips for choosing the perfect square undermount bathroom sink for your home. Remember to consider size, material, budget, drain placement, installation process, and care/maintenance when making your purchase decision.
Author Profile

-
Mike Flanary is the visionary behind The Cornerstone, a staple in Ottawa’s historic Byward Market. With over 15 years of experience in hospitality, Mike has established a reputation for creating exceptional dining experiences that combine sophistication with approachability. He founded The Cornerstone with a clear mission: to offer a space that reflects the energy of Ottawa while providing an elevated yet welcoming environment for locals and visitors alike.
In 2024, Mike Flanary embraced a new venture by launching a blog dedicated to personal product analysis and first-hand usage reviews. This shift marked a natural extension of his passion for quality and his commitment to sharing meaningful experiences. Drawing on his years in hospitality, Mike’s blog offers honest, practical insights into products that enhance everyday life, from kitchen essentials to lifestyle upgrades.
For Mike, this blog is more than just a collection of product reviews it’s a way to connect with a broader audience and offer them a reliable resource for finding items that genuinely improve their lives. Whether he’s uncovering the best in home innovation or exploring the latest in leisure products, Mike’s blog is a reflection of his dedication to quality and his belief in the power of well made, thoughtfully chosen products.
Latest entries
- October 18, 2024Personal RecommendationsI Tested the Ultimate Tackle Box Backpack with Rod Holder for Seamless Fishing Adventures – Here’s What You Need to Know!
- October 18, 2024Personal RecommendationsI Tested the Nike Ryz 365 Women’s Shoes and Here’s Why They’re My New Go-To Sneakers!
- October 18, 2024Personal RecommendationsI Tested ‘The Cold Dish: A Longmire Mystery’ and Here’s Why It’s a Must-Read for Mystery Lovers!
- October 18, 2024Personal RecommendationsI Tested the Top 4 Gang Decora Plates – Here’s My Ultimate Pick!